diff --git a/.ci/bootstrap b/.ci/bootstrap
deleted file mode 100755
index 7076e7e..0000000
--- a/.ci/bootstrap
+++ /dev/null
@@ -1,11 +0,0 @@
-#!/bin/bash
-
-GIT_ROOT=$(git rev-parse --show-toplevel)
-
-if [ "$GIT_ROOT" == "" ]; then
-  echo "Git root cannot be empty"
-  exit 1
-fi
-
-rm -f $GIT_ROOT/.git/hooks/pre-commit &> /dev/null
-ln -s $GIT_ROOT/.ci/pre-commit-hook $GIT_ROOT/.git/hooks/pre-commit
diff --git a/.ci/create-static-binary.sh b/.ci/create-static-binary.sh
deleted file mode 100755
index a33dad5..0000000
--- a/.ci/create-static-binary.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/bin/bash
-
-echo "Building binary in docker"
-
-docker build . -t schlez/fnm-static-binary
-
-echo "Copying to ./fnm"
-
-docker run --rm -v $(pwd):$(pwd) --workdir $(pwd) schlez/fnm-static-binary cp /app/_esy/default/build/default/executable/FnmApp.exe ./fnm
-strip ./fnm
diff --git a/.ci/esy-build-steps.yml b/.ci/esy-build-steps.yml
deleted file mode 100644
index 2333e3f..0000000
--- a/.ci/esy-build-steps.yml
+++ /dev/null
@@ -1,26 +0,0 @@
-# Cross-platform set of build steps for building esy projects
-
-steps:
-  - task: NodeTool@0
-    inputs:
-      versionSpec: '8.9'
-  - script: npm install -g esy@latest
-    displayName: 'npm install -g esy@latest'
-  - script: esy
-    displayName: 'esy install'
-  - script: esy verify-fnm-package
-    displayName: 'Verify Fnm__Package.re file'
-  - script: esy pesy
-    displayName: 'esy pesy'
-  - script: esy build
-    displayName: 'esy build'
-  - script: esy test
-    displayName: 'esy test'
-  - script: esy x fnm.exe
-    displayName: 'Run the main binary'
-  - script: esy ls-libs
-    continueOnError: true
-    displayName: 'Show all libraries including this package lib'
-  - script: esy release
-    displayName: 'Test Creation of Prebuilt Binary Releases'
-    continueOnError: true
diff --git a/.ci/install.sh b/.ci/install.sh
index 740af80..26b9c69 100755
--- a/.ci/install.sh
+++ b/.ci/install.sh
@@ -76,15 +76,20 @@ download_fnm() {
     echo "Downloading $URL..."
 
     mkdir -p "$INSTALL_DIR" &>/dev/null
-    curl --progress-bar -L "$URL" -o "$DOWNLOAD_DIR/$FILENAME.zip"
 
-    if [ 0 -ne $? ]; then
+    if ! curl --progress-bar -L "$URL" -o "$DOWNLOAD_DIR/$FILENAME.zip"; then
       echo "Download failed.  Check that the release/filename are correct."
       exit 1
     fi
 
     unzip -q "$DOWNLOAD_DIR/$FILENAME.zip" -d "$DOWNLOAD_DIR"
-    mv "$DOWNLOAD_DIR/$FILENAME/fnm" "$INSTALL_DIR/fnm"
+
+    if [ -f "$DOWNLOAD_DIR/fnm" ]; then
+      mv "$DOWNLOAD_DIR/fnm" "$INSTALL_DIR/fnm"
+    else
+      mv "$DOWNLOAD_DIR/$FILENAME/fnm" "$INSTALL_DIR/fnm"
+    fi
+
     chmod u+x "$INSTALL_DIR/fnm"
   fi
 }
@@ -133,7 +138,7 @@ ensure_containing_dir_exists() {
 }
 
 setup_shell() {
-  CURRENT_SHELL=$(basename $SHELL)
+  CURRENT_SHELL="$(basename "$SHELL")"
 
   if [ "$CURRENT_SHELL" == "zsh" ]; then
     CONF_FILE=$HOME/.zshrc
diff --git a/.ci/pre-commit-hook b/.ci/pre-commit-hook
deleted file mode 100755
index aa7e446..0000000
--- a/.ci/pre-commit-hook
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/bash
-
-set -e
-
-npx lint-staged
diff --git a/.ci/prepare-fnm-package.js b/.ci/prepare-fnm-package.js
deleted file mode 100755
index c056ffd..0000000
--- a/.ci/prepare-fnm-package.js
+++ /dev/null
@@ -1,43 +0,0 @@
-#!/usr/bin/env node
-
-const fs = require("fs");
-const path = require("path");
-const cp = require("child_process");
-const jestDiff = require("jest-diff");
-
-const version = require("../package.json").version;
-const filepath = path.resolve(__dirname, "..", "library", "Fnm__Package.re");
-
-main({ failOnDifference: process.argv[2] === "--fail-on-difference" });
-
-function generateModule() {
-  const moduleText = `
-    let version = "${version}";
-  `;
-  return cp.execSync(`esy refmt`, { input: moduleText }).toString();
-}
-
-function readFile() {
-  try {
-    return fs.readFileSync(filepath, "utf8");
-  } catch (e) {
-    return "";
-  }
-}
-
-function main({ failOnDifference }) {
-  const result = generateModule();
-
-  if (failOnDifference) {
-    const currentContents = readFile();
-    if (currentContents !== result) {
-      console.log(jestDiff(result, currentContents));
-      console.log(
-        "Fnm__Package.re is outdated! Please update it with `esy update-fnm-package`."
-      );
-      process.exit(1);
-    }
-  }
-
-  fs.writeFileSync(filepath, result);
-}
diff --git a/.ci/prepare-version.js b/.ci/prepare-version.js
deleted file mode 100755
index b11c6b9..0000000
--- a/.ci/prepare-version.js
+++ /dev/null
@@ -1,62 +0,0 @@
-#!/usr/bin/env node
-
-const fs = require("fs");
-const cp = require("child_process");
-const ARGUMENTS = process.argv.slice(2);
-
-const versions = {
-  patch: "patch",
-  minor: "minor",
-  major: "major"
-};
-
-if (!ARGUMENTS[0]) {
-  console.log(
-    [
-      "esy version:prepare, prepare a new fnm version",
-      "",
-      "Usage:",
-      "------",
-      "",
-      "  esy version:prepare patch - to prepare a patch version (X.X.X+1)",
-      "  esy version:prepare minor - to prepare a minor version (X.X+1.0)",
-      "  esy version:prepare major - to prepare a major version (X+1.0.0)"
-    ].join("\n")
-  );
-  process.exit(1);
-}
-const versionType = versions[ARGUMENTS[0].toLowerCase()];
-if (!versionType) {
-  throw new Error("Version (argument 0) must be one of major/minor/patch.");
-}
-
-const pkgJson = JSON.parse(fs.readFileSync("./package.json", "utf8"));
-pkgJson.version = changeVersion(versionType, pkgJson.version);
-fs.writeFileSync("./package.json", JSON.stringify(pkgJson, null, 2));
-
-exec("git fetch origin");
-exec("esy update-fnm-package");
-exec("esy verify-fnm-package");
-exec("esy build");
-exec("./docs/record_screen.sh");
-exec(`esy changelog`, { NEXT_VERSION: `v${pkgJson.version}` });
-
-function exec(command, env) {
-  console.log(`$ ${command}`);
-  return cp.execSync(command, {
-    stdio: "inherit",
-    env: { ...process.env, ...env }
-  });
-}
-
-function changeVersion(type, version) {
-  const [major, minor, patch] = version.split(".").map(x => parseFloat(x, 10));
-  switch (type) {
-    case "patch":
-      return [major, minor, patch + 1].join(".");
-    case "minor":
-      return [major, minor + 1, 0].join(".");
-    case "major":
-      return [major + 1, 0, 0].join(".");
-  }
-}
diff --git a/.ci/print-licenses.js b/.ci/print-licenses.js
deleted file mode 100755
index 775d39c..0000000
--- a/.ci/print-licenses.js
+++ /dev/null
@@ -1,43 +0,0 @@
-#!/usr/bin/env node
-
-const { execSync } = require("child_process");
-
-const groupByMap = (xs, fn, mapFn) => {
-  const grouped = {};
-
-  for (const x of xs) {
-    const key = fn(x);
-    grouped[key] = grouped[key] || [];
-    grouped[key].push(mapFn(x));
-  }
-
-  return grouped;
-};
-
-const licenses = execSync('grep -r "license:" esy.lock')
-  .toString()
-  .split("\n")
-  .map(x => x.trim())
-  .filter(Boolean)
-  .map(line => {
-    const [path, , license] = line.split(":");
-    const dependency = path
-      .split("/")
-      .slice(1)
-      .join("/")
-      .match(/^(.+)\/[^/]+$/)[1];
-    return { dependency, license: JSON.parse(license.trim()) };
-  });
-
-const byLicense = groupByMap(
-  licenses,
-  ({ license }) => license,
-  ({ dependency }) => dependency
-);
-
-for (const [license, packages] of Object.entries(byLicense)) {
-  console.log(`${license}:`);
-  for (const package of packages) {
-    console.log(`  - ${package}`);
-  }
-}
diff --git a/.ci/publish-build-cache.yml b/.ci/publish-build-cache.yml
deleted file mode 100644
index faeb3f8..0000000
--- a/.ci/publish-build-cache.yml
+++ /dev/null
@@ -1,11 +0,0 @@
-# Steps for publishing project cache
-
-steps:
-  - task: PublishBuildArtifacts@1
-    displayName: 'Cache: Upload install folder'
-    condition: and(succeeded(), eq(variables['Build.SourceBranch'], 'refs/heads/master'))
-    inputs:
-        pathToPublish: '$(ESY__CACHE_INSTALL_PATH)'
-        artifactName: 'cache-$(Agent.OS)-install'
-        parallel: true
-        parallelCount: 8
diff --git a/.ci/restore-build-cache.yml b/.ci/restore-build-cache.yml
deleted file mode 100644
index 41bd5c8..0000000
--- a/.ci/restore-build-cache.yml
+++ /dev/null
@@ -1,23 +0,0 @@
-# Steps for restoring project cache
-
-steps:
-  - task: DownloadBuildArtifacts@0
-    condition: and(succeeded(), ne(variables['Build.SourceBranch'], 'refs/heads/master'))
-    displayName: 'Cache: Restore install'
-    inputs:
-        buildType: 'specific'
-        project: '$(System.TeamProject)'
-        pipeline: '$(Build.DefinitionName)'
-        branchName: 'refs/heads/master'
-        buildVersionToDownload: 'latestFromBranch'
-        downloadType: 'single'
-        artifactName: 'cache-$(Agent.OS)-install'
-        downloadPath: '$(System.ArtifactsDirectory)'
-    continueOnError: true
-
-  - task: CopyFiles@2
-    condition: and(succeeded(), ne(variables['Build.SourceBranch'], 'refs/heads/master'))
-    inputs:
-        sourceFolder: '$(System.ArtifactsDirectory)\cache-$(Agent.OS)-install'
-        targetFolder: '$(ESY__CACHE_INSTALL_PATH)'
-    continueOnError: true
diff --git a/.dockerignore b/.dockerignore
deleted file mode 100644
index 7ac74dd..0000000
--- a/.dockerignore
+++ /dev/null
@@ -1,4 +0,0 @@
-_build
-_esy
-node_modules
-Dockerfile
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..c63537e
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,5 @@
+*__Fish.snap linguist-language=fish
+*__Zsh.snap linguist-language=Shell
+*__Bash.snap linguist-language=Shell
+*__PowerShell.snap linguist-language=PowerShell
+*__WinCmd.snap linguist-language=Batchfile
diff --git a/.github/workflows/refmt.yml b/.github/workflows/refmt.yml
deleted file mode 100644
index 76cb551..0000000
--- a/.github/workflows/refmt.yml
+++ /dev/null
@@ -1,67 +0,0 @@
-name: Check formatting
-on: 
-  pull_request:
-  push:
-    branches:
-      - master
-
-# consider using docker: ocaml/opam2:4.06
-# - sudo apt-get update && apt-get install -y m4
-# - opam update && opam install reason
-# - refmt # is new
-
-jobs:
-  # build:
-  #   name: build project
-  #   runs-on: ubuntu-latest
-  #   steps:
-  #     - uses: actions/checkout@master
-  #       with:
-  #         fetch-depth: 1
-  #     - uses: actions/setup-node@v1
-  #       with:
-  #         node-version: '10.x'
-  #     - run: npm install -g esy@latest
-  #     - run: esy i
-  #     - run: esy b
-  #     - run: esy export-dependencies
-  #     - run: tar -czf build.tar.gz _export
-  #     - uses: actions/upload-artifact@master
-  #       with:
-  #         name: cache-linux-build-dependencies
-  #         path: build.tar.gz
-
-  test_refmt:
-    name: run refmt
-    runs-on: ubuntu-latest
-    # needs: [build]
-    steps:
-      - uses: actions/checkout@master
-        with:
-          fetch-depth: 1
-      - uses: actions/setup-node@v1
-        with:
-          node-version: '10.x'
-      # - run: npm install -g esy@latest
-      # - uses: actions/download-artifact@master
-      #   with:
-      #     name: cache-linux-build-dependencies
-      # - run: tar -xzf cache-linux-build-dependencies/build.tar.gz
-      # - run: esy import-build _export/*
-      # - run: esy i
-      # - run: esy fmt
-      - run: npm i -g esy@latest
-      - run: esy @fmt i
-      - run: esy @fmt refmt --in-place */*.re
-      # - run: ./scripts/fmt_all.sh
-      #   name: refmt all the files
-      - run: |
-          if [ -n "$(git status --porcelain)" ]; then
-            echo "There are differences:"
-            git status --porcelain
-            echo "----"
-            echo ""
-            echo 'Please run `esy fmt` locally to fix the issues.'
-            exit 1
-          fi
-        name: "Throw if something changed"
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
new file mode 100644
index 0000000..a84107b
--- /dev/null
+++ b/.github/workflows/rust.yml
@@ -0,0 +1,175 @@
+name: Rust
+
+on: [push]
+
+jobs:
+  fmt:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: hecrj/setup-rust-action@v1
+      with:
+        rust-version: stable
+    - uses: actions/checkout@v1
+    - name: cargo fmt
+      run: cargo fmt -- --check
+
+  unit_tests:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macOS-latest, windows-latest]
+    steps:
+    - uses: hecrj/setup-rust-action@v1
+      with:
+        rust-version: stable
+    - uses: actions/checkout@v1
+    - name: Run tests
+      run: cargo test -- --skip=feature_tests
+
+  e2e_tests:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macOS-latest, windows-latest]
+    steps:
+    - name: Install Fish and Zsh using brew
+      if: "startsWith(matrix.os, 'macOS')"
+      run: brew install fish zsh
+    - name: Install Fish and Zsh using apt
+      if: "startsWith(matrix.os, 'ubuntu')"
+      run: sudo apt-get install -y fish zsh
+    - uses: hecrj/setup-rust-action@v1
+      with:
+        rust-version: stable
+    - uses: actions/checkout@v1
+    - name: Run tests
+      run: cargo test -- feature_tests
+
+  build_release:
+    runs-on: windows-latest
+    name: "Release build for Windows"
+    steps:
+    - uses: hecrj/setup-rust-action@v1
+      with:
+        rust-version: stable
+    - uses: actions/checkout@v1
+    - name: Build release binary
+      run: cargo build --release
+      env:
+        RUSTFLAGS: "-C target-feature=+crt-static"
+    - name: Compress binary using UPX
+      run: |
+        choco install upx
+        upx target/release/fnm.exe
+    - uses: actions/upload-artifact@v2
+      with:
+        name: fnm-windows
+        path: target/release/fnm.exe
+
+  build_macos_release:
+    runs-on: macOS-latest
+    name: "Release build for MacOS"
+    steps:
+    - uses: hecrj/setup-rust-action@v1
+      with:
+        rust-version: stable
+    - uses: actions/checkout@v1
+    - name: Build release binary
+      run: cargo build --release
+      env:
+        LZMA_API_STATIC: "true"
+    - name: Strip binary from debug symbols
+      run: strip target/release/fnm
+    - name: List dynamically linked libraries
+      run: otool -L target/release/fnm
+    - name: Compress binary using UPX
+      run: |
+        brew install upx
+        upx target/release/fnm
+    - uses: actions/upload-artifact@v2
+      with:
+        name: fnm-macos
+        path: target/release/fnm
+
+  build_static_linux_binary:
+    name: "Build static Linux binary"
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Build static binary
+      run: |
+        sudo chown -R 1000:1000 .
+        docker run --rm -v "$(pwd)":/home/rust/src ekidd/rust-musl-builder:stable \
+          cargo build --release
+        sudo chown -R $(whoami):$(whoami) .
+    - name: Compress binary using UPX
+      run: |
+        sudo apt-get install -y upx
+        upx target/x86_64-unknown-linux-musl/release/fnm
+    - uses: actions/upload-artifact@v2
+      with:
+        name: fnm-linux
+        path: target/x86_64-unknown-linux-musl/release/fnm
+
+  # benchmark_on_linux:
+  #   name: Performance Benchmarks (Linux)
+  #   needs: [build_static_linux_binary]
+  #   runs-on: ubuntu-latest
+  #   steps:
+  #     - uses: octokit/request-action@v2.x
+  #       id: get_master_workflows
+  #       with:
+  #         route: GET /repos/:repository/actions/runs
+  #         repository: ${{ github.repository }}
+  #         branch: master
+  #         status: completed
+  #       env:
+  #         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  #     - uses: octokit/request-action@v2.x
+  #       id: get_latest_artifacts
+  #       with:
+  #         route: GET /repos/:repository/actions/runs/:workflow_id/artifacts
+  #         repository: ${{ github.repository }}
+  #         workflow_id: ${{ fromJson(steps.get_master_workflows.outputs.data).workflow_runs[0].id }}
+  #       env:
+  #         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  #     - name: "Take the output"
+  #       run: |
+  #         URL=$(echo '${{ steps.get_latest_artifacts.outputs.data }}' | jq -r '.artifacts | map(select(.name == "fnm-linux")) | .[0].archive_download_url')
+  #         curl -L $URL -H 'authorization: Bearer ${{ secrets.GITHUB_TOKEN }}' > /tmp/fnm-latest.zip
+  #         mkdir ~/.fnm-latest
+  #         unzip -d ~/.fnm-latest /tmp/fnm-latest.zip
+  #         ls -lah ~/.fnm-latest
+  #     - uses: actions/checkout@v2
+  #     - name: Install Hyperfine
+  #       run: |
+  #         wget https://github.com/sharkdp/hyperfine/releases/download/v1.10.0/hyperfine_1.10.0_amd64.deb
+  #         sudo dpkg -i hyperfine_1.10.0_amd64.deb
+  #     - name: Install fnm-reason for Linux
+  #       run: curl -fsSL https://github.com/Schniz/fnm/raw/master/.ci/install.sh | bash -s -- --skip-shell
+  #     - name: Install nvm
+  #       run: curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash
+  #     - uses: actions/download-artifact@v2
+  #       with:
+  #         name: fnm-linux
+  #         path: target/release/
+  #     - name: "Run benchmarks"
+  #       run: bash benchmarks/run
+
+  #     - name: Read basic.md for the generated report
+  #       id: basic_result
+  #       uses: juliangruber/read-file-action@v1
+  #       with:
+  #         path: benchmarks/results/basic.md
+
+  #     - uses: octokit/request-action@v2.x
+  #       id: get_latest_release
+  #       with:
+  #         route: POST /repos/:repository/commits/:commit_sha/comments
+  #         repository: ${{ github.repository }}
+  #         commit_sha: ${{ github.sha }}
+  #         body: |
+  #           |
+  #           ${{ steps.basic_result.outputs.content }}
+  #       env:
+  #         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.gitignore b/.gitignore
index 6fef430..6a7a043 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,15 +1,6 @@
-npm-debug.log
-.merlin
-yarn-error.log
-node_modules
-node_modules/
-_build
-_release
-_esy/
-fnm.install
-.DS_Store
-*.install
-.tmp
 docs/screen_recording
-.idea
-.fnmTmp
\ No newline at end of file
+/benchmarks/results
+/target
+**/*.rs.bk
+feature_tests/.tmp
+*.log
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..49dca54
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,2048 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "addr2line"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b6a2d3371669ab3ca9797670853d61402b03d0b4b9ebf33d677dfa720203072"
+dependencies = [
+ "gimli",
+]
+
+[[package]]
+name = "adler"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee2a4ec343196209d6594e19543ae87a39f96d5534d7174822a3ad825dd6ed7e"
+
+[[package]]
+name = "adler32"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aae1277d39aeec15cb388266ecc24b11c80469deae6067e17a1a7aa9e5c1f234"
+
+[[package]]
+name = "aho-corasick"
+version = "0.7.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "043164d8ba5c4c3035fec9bbee8647c0261d788f3474306f93bb65901cae0e86"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "ansi_term"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
+dependencies = [
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "arrayref"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4c527152e37cf757a3f78aae5a06fbeefdb07ccc535c980a3208ee3060dd544"
+
+[[package]]
+name = "arrayvec"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cff77d8686867eceff3105329d4698d96c2391c176d5d03adc90c7389162b5b8"
+
+[[package]]
+name = "atty"
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+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.68"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f249f06ef7ee334cc3b8ff031bfc11ec99d00f34d86da7498396dc1e3b1498fe"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.68"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d649a3145108d7d3fbcde896a468d1bd636791823c9921135218ad89be08307"
+
+[[package]]
+name = "web-sys"
+version = "0.3.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4bf6ef87ad7ae8008e15a355ce696bed26012b7caa21605188cfd8214ab51e2d"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "winapi"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-build"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "winreg"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2986deb581c4fe11b621998a5e53361efe6b48a151178d0cd9eeffa4dc6acc9"
+dependencies = [
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "winreg"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0120db82e8a1e0b9fb3345a539c478767c0048d842860994d96113d5b667bd69"
+dependencies = [
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "ws2_32-sys"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
+dependencies = [
+ "winapi 0.2.8",
+ "winapi-build",
+]
+
+[[package]]
+name = "xattr"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "244c3741f4240ef46274860397c7c74e50eb23624996930e484c16679633a54c"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "xz2"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c179869f34fc7c01830d3ce7ea2086bc3a07e0d35289b667d0a8bf910258926c"
+dependencies = [
+ "lzma-sys",
+]
+
+[[package]]
+name = "yaml-rust"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "39f0c922f1a334134dc2f7a8b67dc5d25f0735263feec974345ff706bcf20b0d"
+dependencies = [
+ "linked-hash-map",
+]
+
+[[package]]
+name = "zip"
+version = "0.5.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "543adf038106b64cfca4711c82c917d785e3540e04f7996554488f988ec43124"
+dependencies = [
+ "byteorder",
+ "bzip2",
+ "crc32fast",
+ "flate2",
+ "thiserror",
+ "time",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..36a5f79
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,41 @@
+[package]
+name = "fnm"
+version = "0.1.0"
+authors = ["Gal Schlezinger <gal@spitfire.co.il>"]
+edition = "2018"
+build = "build.rs"
+
+[dependencies]
+serde = { version = "1.0.115", features = ["derive"] }
+clap = "2.33.3"
+structopt = "0.3.16"
+reqwest = { version = "0.10.7", features = ["blocking", "json"] }
+serde_json = "1.0.57"
+chrono = { version = "0.4.15", features = ["serde"] }
+tar = "0.4.29"
+xz2 = "0.1.6"
+semver = "0.10.0"
+dirs = "3.0.1"
+colored = "2.0.0"
+zip = "0.5.6"
+tempfile = "3.1.0"
+indoc = "1.0.2"
+snafu = { version = "0.6.8", features = ["backtrace"] }
+log = "0.4.11"
+env_logger = "0.7.1"
+atty = "0.2.14"
+encoding_rs_io = "0.1.7"
+
+[dev-dependencies]
+pretty_assertions = "0.6.1"
+duct = "0.13.4"
+test-env-log = "0.2.2"
+shell-escape = "0.1.5"
+insta = { version = "0.16.1", features = ["backtrace"] }
+serial_test = "0.4.0"
+
+[build-dependencies]
+embed-resource = "1.3.3"
+
+[target.'cfg(windows)'.dependencies]
+csv = "1.1.3"
diff --git a/Dockerfile b/Dockerfile
deleted file mode 100644
index 4cb2aed..0000000
--- a/Dockerfile
+++ /dev/null
@@ -1,18 +0,0 @@
-FROM frolvlad/alpine-glibc
-
-RUN apk add --no-cache nodejs bash npm curl g++ make m4 patch gmp-dev perl git jq perl-utils libressl-dev coreutils
-
-USER root
-
-RUN npm -g config set user root
-RUN npm i -g esy@latest
-
-WORKDIR /app
-ADD . /app
-
-RUN jq '. | .buildDirs.executable.flags |= . + ["-ccopt", "-static"]' package.json > package.json.new && mv package.json.new package.json
-RUN npx esy i
-RUN npx esy verify-fnm-package
-RUN npx esy pesy
-RUN npx esy b
-RUN npx esy test
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
deleted file mode 100644
index 004c727..0000000
--- a/azure-pipelines.yml
+++ /dev/null
@@ -1,74 +0,0 @@
-# Starter pipeline
-# Start with a minimal pipeline that you can customize to build and deploy your code.
-# Add steps that build, run tests, deploy, and more:
-# https://aka.ms/yaml
-
-name: $(Build.SourceVersion)
-jobs:
-- job: Linux
-  timeoutInMinutes: 0
-  pool:
-    vmImage: 'Ubuntu 16.04'
-
-  variables:
-    ESY__CACHE_INSTALL_PATH: /home/vsts/.esy/3_____________________________________________________________________/i/
-    ESY__CACHE_SOURCE_TARBALL_PATH: /home/vsts/.esy/source/i
-
-  steps:
-  # TODO: Uncomment both this and 'publish-build-cache' below to enable build caching for Linux.
-  # - template: .ci/restore-build-cache.yml
-  - script: sudo apt-get install -y fish
-  - script: .ci/create-static-binary.sh
-  - script: ./feature_tests/run.sh $(pwd)/fnm
-  # - script: bash .ci/prepare-static-build.sh
-  # - template: .ci/esy-build-steps.yml
-  # - template: .ci/publish-build-cache.yml
-  - task: PublishBuildArtifacts@1
-    displayName: 'Save artifact'
-    inputs:
-        PathtoPublish: fnm
-        ArtifactName: fnm-linux
-
-- job: MacOS
-  timeoutInMinutes: 0
-  pool:
-    vmImage: 'macOS 10.14'
-
-  variables:
-    ESY__CACHE_INSTALL_PATH: /Users/vsts/.esy/3____________________________________________________________________/i/
-    ESY__CACHE_SOURCE_TARBALL_PATH: /Users/vsts/.esy/source/i
-
-  steps:
-  # TODO: Uncomment both this and 'publish-build-cache' below to enable build caching for Mac.
-  # - template: .ci/restore-build-cache.yml
-  - script: brew install fish gmp
-  - script: sudo rm $(brew --prefix gmp)/lib/*.dylib
-  # remove /usr/local/lib/libgmp.dylib
-  - template: .ci/esy-build-steps.yml
-  - script: cp _esy/default/build/default/executable/FnmApp.exe _esy/default/build/fnm
-  - script: otool -L _esy/default/build/fnm
-    displayName: 'list dynamic libraries'
-  - script: strip _esy/default/build/fnm
-  - script: ./feature_tests/run.sh $(pwd)/_esy/default/build/fnm
-  # - template: .ci/publish-build-cache.yml
-  - task: PublishBuildArtifacts@1
-    displayName: 'Save artifact'
-    inputs:
-        PathtoPublish: '_esy/default/build/fnm'
-        ArtifactName: fnm-macos
-
-- job: Release
-  timeoutInMinutes: 0
-  displayName: Release
-  dependsOn:
-      - Linux
-      - MacOS
-  condition: succeeded()
-  pool:
-     vmImage: ubuntu-16.04
-  steps:
-    - task: PublishBuildArtifacts@1
-      displayName: 'Release Package'
-      inputs:
-          PathtoPublish: '.'
-          ArtifactName: npm-package
diff --git a/build.rs b/build.rs
new file mode 100644
index 0000000..44aaf26
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,3 @@
+fn main() {
+    embed_resource::compile("fnm-manifest.rc");
+}
diff --git a/dune b/dune
deleted file mode 100644
index c8e261a..0000000
--- a/dune
+++ /dev/null
@@ -1 +0,0 @@
-(dirs (:standard \ node_modules \ _esy))
\ No newline at end of file
diff --git a/dune-project b/dune-project
deleted file mode 100644
index 28bf472..0000000
--- a/dune-project
+++ /dev/null
@@ -1,2 +0,0 @@
-(lang dune 1.6)
- (name fnm)
diff --git a/esy.lock/.gitattributes b/esy.lock/.gitattributes
deleted file mode 100644
index e0b4e26..0000000
--- a/esy.lock/.gitattributes
+++ /dev/null
@@ -1,3 +0,0 @@
-
-# Set eol to LF so files aren't converted to CRLF-eol on Windows.
-* text eol=lf linguist-generated
diff --git a/esy.lock/.gitignore b/esy.lock/.gitignore
deleted file mode 100644
index a221be2..0000000
--- a/esy.lock/.gitignore
+++ /dev/null
@@ -1,3 +0,0 @@
-
-# Reset any possible .gitignore, we want all esy.lock to be un-ignored.
-!*
diff --git a/esy.lock/index.json b/esy.lock/index.json
deleted file mode 100644
index bae1965..0000000
--- a/esy.lock/index.json
+++ /dev/null
@@ -1,7055 +0,0 @@
-{
-  "checksum": "da1004cd5badeed69934bbd318192f88",
-  "root": "fnm@link-dev:./package.json",
-  "node": {
-    "yargs-parser@16.1.0@d41d8cd9": {
-      "id": "yargs-parser@16.1.0@d41d8cd9",
-      "name": "yargs-parser",
-      "version": "16.1.0",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/yargs-parser/-/yargs-parser-16.1.0.tgz#sha1:73747d53ae187e7b8dbe333f95714c76ea00ecf1"
-        ]
-      },
-      "overrides": [],
-      "dependencies": ["decamelize@1.2.0@d41d8cd9", "camelcase@5.3.1@d41d8cd9"],
-      "devDependencies": []
-    },
-    "yargs-parser@13.1.1@d41d8cd9": {
-      "id": "yargs-parser@13.1.1@d41d8cd9",
-      "name": "yargs-parser",
-      "version": "13.1.1",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.1.tgz#sha1:d26058532aa06d365fe091f6a1fc06b2f7e5eca0"
-        ]
-      },
-      "overrides": [],
-      "dependencies": ["decamelize@1.2.0@d41d8cd9", "camelcase@5.3.1@d41d8cd9"],
-      "devDependencies": []
-    },
-    "yargs@15.1.0@d41d8cd9": {
-      "id": "yargs@15.1.0@d41d8cd9",
-      "name": "yargs",
-      "version": "15.1.0",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/yargs/-/yargs-15.1.0.tgz#sha1:e111381f5830e863a89550bd4b136bb6a5f37219"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [
-        "yargs-parser@16.1.0@d41d8cd9",
-        "y18n@4.0.0@d41d8cd9",
-        "which-module@2.0.0@d41d8cd9",
-        "string-width@4.2.0@d41d8cd9",
-        "set-blocking@2.0.0@d41d8cd9",
-        "require-main-filename@2.0.0@d41d8cd9",
-        "require-directory@2.1.1@d41d8cd9",
-        "get-caller-file@2.0.5@d41d8cd9",
-        "find-up@4.1.0@d41d8cd9",
-        "decamelize@1.2.0@d41d8cd9",
-        "cliui@6.0.0@d41d8cd9"
-      ],
-      "devDependencies": []
-    },
-    "yargs@13.3.0@d41d8cd9": {
-      "id": "yargs@13.3.0@d41d8cd9",
-      "name": "yargs",
-      "version": "13.3.0",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/yargs/-/yargs-13.3.0.tgz#sha1:4c657a55e07e5f2cf947f8a366567c04a0dedc83"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [
-        "yargs-parser@13.1.1@d41d8cd9",
-        "y18n@4.0.0@d41d8cd9",
-        "which-module@2.0.0@d41d8cd9",
-        "string-width@3.1.0@d41d8cd9",
-        "set-blocking@2.0.0@d41d8cd9",
-        "require-main-filename@2.0.0@d41d8cd9",
-        "require-directory@2.1.1@d41d8cd9",
-        "get-caller-file@2.0.5@d41d8cd9",
-        "find-up@3.0.0@d41d8cd9",
-        "cliui@5.0.0@d41d8cd9"
-      ],
-      "devDependencies": []
-    },
-    "yaml@1.7.2@d41d8cd9": {
-      "id": "yaml@1.7.2@d41d8cd9",
-      "name": "yaml",
-      "version": "1.7.2",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/yaml/-/yaml-1.7.2.tgz#sha1:f26aabf738590ab61efaca502358e48dc9f348b2"
-        ]
-      },
-      "overrides": [],
-      "dependencies": ["@babel/runtime@7.8.4@d41d8cd9"],
-      "devDependencies": []
-    },
-    "yallist@4.0.0@d41d8cd9": {
-      "id": "yallist@4.0.0@d41d8cd9",
-      "name": "yallist",
-      "version": "4.0.0",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz#sha1:9bb92790d9c0effec63be73519e11a35019a3a72"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [],
-      "devDependencies": []
-    },
-    "yallist@3.1.1@d41d8cd9": {
-      "id": "yallist@3.1.1@d41d8cd9",
-      "name": "yallist",
-      "version": "3.1.1",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz#sha1:dbb7daf9bfd8bac9ab45ebf602b8cbad0d5d08fd"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [],
-      "devDependencies": []
-    },
-    "y18n@4.0.0@d41d8cd9": {
-      "id": "y18n@4.0.0@d41d8cd9",
-      "name": "y18n",
-      "version": "4.0.0",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz#sha1:95ef94f85ecc81d007c264e190a120f0a3c8566b"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [],
-      "devDependencies": []
-    },
-    "wrappy@1.0.2@d41d8cd9": {
-      "id": "wrappy@1.0.2@d41d8cd9",
-      "name": "wrappy",
-      "version": "1.0.2",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz#sha1:b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [],
-      "devDependencies": []
-    },
-    "wrap-ansi@6.2.0@d41d8cd9": {
-      "id": "wrap-ansi@6.2.0@d41d8cd9",
-      "name": "wrap-ansi",
-      "version": "6.2.0",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-6.2.0.tgz#sha1:e9393ba07102e6c91a3b221478f0257cd2856e53"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [
-        "strip-ansi@6.0.0@d41d8cd9",
-        "string-width@4.2.0@d41d8cd9",
-        "ansi-styles@4.2.1@d41d8cd9"
-      ],
-      "devDependencies": []
-    },
-    "wrap-ansi@5.1.0@d41d8cd9": {
-      "id": "wrap-ansi@5.1.0@d41d8cd9",
-      "name": "wrap-ansi",
-      "version": "5.1.0",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-5.1.0.tgz#sha1:1fd1f67235d5b6d0fee781056001bfb694c03b09"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [
-        "strip-ansi@5.2.0@d41d8cd9",
-        "string-width@3.1.0@d41d8cd9",
-        "ansi-styles@3.2.1@d41d8cd9"
-      ],
-      "devDependencies": []
-    },
-    "wrap-ansi@3.0.1@d41d8cd9": {
-      "id": "wrap-ansi@3.0.1@d41d8cd9",
-      "name": "wrap-ansi",
-      "version": "3.0.1",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-3.0.1.tgz#sha1:288a04d87eda5c286e060dfe8f135ce8d007f8ba"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [
-        "strip-ansi@4.0.0@d41d8cd9",
-        "string-width@2.1.1@d41d8cd9"
-      ],
-      "devDependencies": []
-    },
-    "which-module@2.0.0@d41d8cd9": {
-      "id": "which-module@2.0.0@d41d8cd9",
-      "name": "which-module",
-      "version": "2.0.0",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/which-module/-/which-module-2.0.0.tgz#sha1:d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [],
-      "devDependencies": []
-    },
-    "which@2.0.2@d41d8cd9": {
-      "id": "which@2.0.2@d41d8cd9",
-      "name": "which",
-      "version": "2.0.2",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/which/-/which-2.0.2.tgz#sha1:7c6a8dd0a636a0327e10b59c9286eee93f3f51b1"
-        ]
-      },
-      "overrides": [],
-      "dependencies": ["isexe@2.0.0@d41d8cd9"],
-      "devDependencies": []
-    },
-    "which@1.3.1@d41d8cd9": {
-      "id": "which@1.3.1@d41d8cd9",
-      "name": "which",
-      "version": "1.3.1",
-      "source": {
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-          "version": "v0.13.1",
-          "path": "esy.lock/opam/base.v0.13.1"
-        }
-      },
-      "overrides": [],
-      "dependencies": [
-        "ocaml@4.8.1000@d41d8cd9",
-        "@opam/sexplib0@opam:v0.13.0@3f54c2be",
-        "@opam/dune-configurator@opam:2.3.1@f275cf9a",
-        "@opam/dune@opam:2.3.1@b10b59bf",
-        "@esy-ocaml/substs@0.0.1@d41d8cd9"
-      ],
-      "devDependencies": [
-        "ocaml@4.8.1000@d41d8cd9",
-        "@opam/sexplib0@opam:v0.13.0@3f54c2be",
-        "@opam/dune-configurator@opam:2.3.1@f275cf9a",
-        "@opam/dune@opam:2.3.1@b10b59bf"
-      ]
-    },
-    "@opam/atdgen-runtime@opam:2.0.0@60f6faab": {
-      "id": "@opam/atdgen-runtime@opam:2.0.0@60f6faab",
-      "name": "@opam/atdgen-runtime",
-      "version": "opam:2.0.0",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://opam.ocaml.org/cache/md5/14/14e47609397c524ea0eae7c3f14f7ccf#md5:14e47609397c524ea0eae7c3f14f7ccf",
-          "archive:https://github.com/mjambon/atd/releases/download/2.0.0/atd-2.0.0.tbz#md5:14e47609397c524ea0eae7c3f14f7ccf"
-        ],
-        "opam": {
-          "name": "atdgen-runtime",
-          "version": "2.0.0",
-          "path": "esy.lock/opam/atdgen-runtime.2.0.0"
-        }
-      },
-      "overrides": [],
-      "dependencies": [
-        "ocaml@4.8.1000@d41d8cd9",
-        "@opam/yojson@opam:1.7.0@7056d985",
-        "@opam/jbuilder@opam:1.0+beta20.2@053ddcf2",
-        "@opam/biniou@opam:1.2.1@d7570399",
-        "@esy-ocaml/substs@0.0.1@d41d8cd9"
-      ],
-      "devDependencies": [
-        "ocaml@4.8.1000@d41d8cd9",
-        "@opam/yojson@opam:1.7.0@7056d985",
-        "@opam/jbuilder@opam:1.0+beta20.2@053ddcf2",
-        "@opam/biniou@opam:1.2.1@d7570399"
-      ]
-    },
-    "@opam/atdgen@opam:2.0.0@46af0360": {
-      "id": "@opam/atdgen@opam:2.0.0@46af0360",
-      "name": "@opam/atdgen",
-      "version": "opam:2.0.0",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://opam.ocaml.org/cache/md5/14/14e47609397c524ea0eae7c3f14f7ccf#md5:14e47609397c524ea0eae7c3f14f7ccf",
-          "archive:https://github.com/mjambon/atd/releases/download/2.0.0/atd-2.0.0.tbz#md5:14e47609397c524ea0eae7c3f14f7ccf"
-        ],
-        "opam": {
-          "name": "atdgen",
-          "version": "2.0.0",
-          "path": "esy.lock/opam/atdgen.2.0.0"
-        }
-      },
-      "overrides": [],
-      "dependencies": [
-        "ocaml@4.8.1000@d41d8cd9",
-        "@opam/yojson@opam:1.7.0@7056d985",
-        "@opam/jbuilder@opam:1.0+beta20.2@053ddcf2",
-        "@opam/biniou@opam:1.2.1@d7570399",
-        "@opam/atdgen-runtime@opam:2.0.0@60f6faab",
-        "@opam/atd@opam:2.0.0@e0ddd12f",
-        "@esy-ocaml/substs@0.0.1@d41d8cd9"
-      ],
-      "devDependencies": [
-        "ocaml@4.8.1000@d41d8cd9",
-        "@opam/yojson@opam:1.7.0@7056d985",
-        "@opam/jbuilder@opam:1.0+beta20.2@053ddcf2",
-        "@opam/biniou@opam:1.2.1@d7570399",
-        "@opam/atdgen-runtime@opam:2.0.0@60f6faab",
-        "@opam/atd@opam:2.0.0@e0ddd12f"
-      ]
-    },
-    "@opam/atd@opam:2.0.0@e0ddd12f": {
-      "id": "@opam/atd@opam:2.0.0@e0ddd12f",
-      "name": "@opam/atd",
-      "version": "opam:2.0.0",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://opam.ocaml.org/cache/md5/14/14e47609397c524ea0eae7c3f14f7ccf#md5:14e47609397c524ea0eae7c3f14f7ccf",
-          "archive:https://github.com/mjambon/atd/releases/download/2.0.0/atd-2.0.0.tbz#md5:14e47609397c524ea0eae7c3f14f7ccf"
-        ],
-        "opam": {
-          "name": "atd",
-          "version": "2.0.0",
-          "path": "esy.lock/opam/atd.2.0.0"
-        }
-      },
-      "overrides": [],
-      "dependencies": [
-        "ocaml@4.8.1000@d41d8cd9",
-        "@opam/menhir@opam:20200211@90483d81",
-        "@opam/jbuilder@opam:1.0+beta20.2@053ddcf2",
-        "@opam/easy-format@opam:1.3.2@0484b3c4",
-        "@esy-ocaml/substs@0.0.1@d41d8cd9"
-      ],
-      "devDependencies": [
-        "ocaml@4.8.1000@d41d8cd9",
-        "@opam/jbuilder@opam:1.0+beta20.2@053ddcf2",
-        "@opam/easy-format@opam:1.3.2@0484b3c4"
-      ]
-    },
-    "@opam/astring@opam:0.8.3@4e5e17d5": {
-      "id": "@opam/astring@opam:0.8.3@4e5e17d5",
-      "name": "@opam/astring",
-      "version": "opam:0.8.3",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://opam.ocaml.org/cache/md5/c5/c5bf6352b9ac27fbeab342740f4fa870#md5:c5bf6352b9ac27fbeab342740f4fa870",
-          "archive:http://erratique.ch/software/astring/releases/astring-0.8.3.tbz#md5:c5bf6352b9ac27fbeab342740f4fa870"
-        ],
-        "opam": {
-          "name": "astring",
-          "version": "0.8.3",
-          "path": "esy.lock/opam/astring.0.8.3"
-        }
-      },
-      "overrides": [],
-      "dependencies": [
-        "ocaml@4.8.1000@d41d8cd9",
-        "@opam/topkg@opam:1.0.1@a42c631e",
-        "@opam/ocamlfind@opam:1.8.1@ff07b0f9",
-        "@opam/ocamlbuild@opam:0.14.0@6ac75d03",
-        "@opam/base-bytes@opam:base@19d0c2ff",
-        "@esy-ocaml/substs@0.0.1@d41d8cd9"
-      ],
-      "devDependencies": [
-        "ocaml@4.8.1000@d41d8cd9",
-        "@opam/base-bytes@opam:base@19d0c2ff"
-      ]
-    },
-    "@opam/asn1-combinators@opam:0.2.2@61f661eb": {
-      "id": "@opam/asn1-combinators@opam:0.2.2@61f661eb",
-      "name": "@opam/asn1-combinators",
-      "version": "opam:0.2.2",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://opam.ocaml.org/cache/sha256/c9/c9ebd5f9def090003918081cac680224eaefbf3def8aed8fe532b711a71d3631#sha256:c9ebd5f9def090003918081cac680224eaefbf3def8aed8fe532b711a71d3631",
-          "archive:https://github.com/mirleft/ocaml-asn1-combinators/releases/download/v0.2.2/asn1-combinators-v0.2.2.tbz#sha256:c9ebd5f9def090003918081cac680224eaefbf3def8aed8fe532b711a71d3631"
-        ],
-        "opam": {
-          "name": "asn1-combinators",
-          "version": "0.2.2",
-          "path": "esy.lock/opam/asn1-combinators.0.2.2"
-        }
-      },
-      "overrides": [],
-      "dependencies": [
-        "ocaml@4.8.1000@d41d8cd9",
-        "@opam/zarith@opam:1.9.1@ce833113",
-        "@opam/stdlib-shims@opam:0.1.0@d957c903",
-        "@opam/ptime@opam:0.8.5@0051d642",
-        "@opam/dune@opam:2.3.1@b10b59bf",
-        "@opam/cstruct@opam:5.1.1@e0b5aafd",
-        "@opam/bigarray-compat@opam:1.0.0@1faefa97",
-        "@esy-ocaml/substs@0.0.1@d41d8cd9"
-      ],
-      "devDependencies": [
-        "ocaml@4.8.1000@d41d8cd9",
-        "@opam/zarith@opam:1.9.1@ce833113",
-        "@opam/stdlib-shims@opam:0.1.0@d957c903",
-        "@opam/ptime@opam:0.8.5@0051d642",
-        "@opam/dune@opam:2.3.1@b10b59bf",
-        "@opam/cstruct@opam:5.1.1@e0b5aafd",
-        "@opam/bigarray-compat@opam:1.0.0@1faefa97"
-      ]
-    },
-    "@jest/types@24.9.0@d41d8cd9": {
-      "id": "@jest/types@24.9.0@d41d8cd9",
-      "name": "@jest/types",
-      "version": "24.9.0",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/@jest/types/-/types-24.9.0.tgz#sha1:63cb26cb7500d069e5a389441a7c6ab5e909fc59"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [
-        "@types/yargs@13.0.8@d41d8cd9",
-        "@types/istanbul-reports@1.1.1@d41d8cd9",
-        "@types/istanbul-lib-coverage@2.0.1@d41d8cd9"
-      ],
-      "devDependencies": []
-    },
-    "@esy-ocaml/substs@0.0.1@d41d8cd9": {
-      "id": "@esy-ocaml/substs@0.0.1@d41d8cd9",
-      "name": "@esy-ocaml/substs",
-      "version": "0.0.1",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/@esy-ocaml/substs/-/substs-0.0.1.tgz#sha1:59ebdbbaedcda123fc7ed8fb2b302b7d819e9a46"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [],
-      "devDependencies": []
-    },
-    "@esy-ocaml/reason@3.5.2@d41d8cd9": {
-      "id": "@esy-ocaml/reason@3.5.2@d41d8cd9",
-      "name": "@esy-ocaml/reason",
-      "version": "3.5.2",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/@esy-ocaml/reason/-/reason-3.5.2.tgz#sha1:ac48b63fd66fbbc1d77ab6a2b7e3a1ba21a8f40b"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [
-        "ocaml@4.8.1000@d41d8cd9",
-        "@opam/result@opam:1.5@6b753c82",
-        "@opam/ocamlfind@opam:1.8.1@ff07b0f9",
-        "@opam/ocaml-migrate-parsetree@opam:1.6.0@da2643e7",
-        "@opam/merlin-extend@opam:0.5@a5dd7d4b",
-        "@opam/menhir@opam:20200211@90483d81",
-        "@opam/dune@opam:2.3.1@b10b59bf"
-      ],
-      "devDependencies": []
-    },
-    "@esy-ocaml/fauxpam@0.2.0@d41d8cd9": {
-      "id": "@esy-ocaml/fauxpam@0.2.0@d41d8cd9",
-      "name": "@esy-ocaml/fauxpam",
-      "version": "0.2.0",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/@esy-ocaml/fauxpam/-/fauxpam-0.2.0.tgz#sha1:2d68dd7387f43dd2be6c5c0035f71c4dadf08f46"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [
-        "ocaml@4.8.1000@d41d8cd9",
-        "@opam/dune@opam:2.3.1@b10b59bf"
-      ],
-      "devDependencies": []
-    },
-    "@babel/runtime@7.8.4@d41d8cd9": {
-      "id": "@babel/runtime@7.8.4@d41d8cd9",
-      "name": "@babel/runtime",
-      "version": "7.8.4",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/@babel/runtime/-/runtime-7.8.4.tgz#sha1:d79f5a2040f7caa24d53e563aad49cbc05581308"
-        ]
-      },
-      "overrides": [],
-      "dependencies": ["regenerator-runtime@0.13.4@d41d8cd9"],
-      "devDependencies": []
-    },
-    "@babel/highlight@7.8.3@d41d8cd9": {
-      "id": "@babel/highlight@7.8.3@d41d8cd9",
-      "name": "@babel/highlight",
-      "version": "7.8.3",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/@babel/highlight/-/highlight-7.8.3.tgz#sha1:28f173d04223eaaa59bc1d439a3836e6d1265797"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [
-        "js-tokens@4.0.0@d41d8cd9",
-        "esutils@2.0.3@d41d8cd9",
-        "chalk@2.4.2@d41d8cd9"
-      ],
-      "devDependencies": []
-    },
-    "@babel/code-frame@7.8.3@d41d8cd9": {
-      "id": "@babel/code-frame@7.8.3@d41d8cd9",
-      "name": "@babel/code-frame",
-      "version": "7.8.3",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.8.3.tgz#sha1:33e25903d7481181534e12ec0a25f16b6fcf419e"
-        ]
-      },
-      "overrides": [],
-      "dependencies": ["@babel/highlight@7.8.3@d41d8cd9"],
-      "devDependencies": []
-    }
-  }
-}
diff --git a/esy.lock/opam/asn1-combinators.0.2.2/opam b/esy.lock/opam/asn1-combinators.0.2.2/opam
deleted file mode 100644
index 1681676..0000000
--- a/esy.lock/opam/asn1-combinators.0.2.2/opam
+++ /dev/null
@@ -1,38 +0,0 @@
-opam-version: "2.0"
-authors: "David Kaloper Meršinjak"
-maintainer: "David Kaloper Meršinjak <dk505@cam.ac.uk>"
-homepage: "https://github.com/mirleft/ocaml-asn1-combinators"
-doc: "https://mirleft.github.io/ocaml-asn1-combinators/doc"
-license: "ISC"
-dev-repo: "git+https://github.com/mirleft/ocaml-asn1-combinators.git"
-bug-reports: "https://github.com/mirleft/ocaml-asn1-combinators/issues"
-synopsis: "Embed typed ASN.1 grammars in OCaml"
-build: [ ["dune" "subst"] {pinned}
-         ["dune" "build" "-p" name "-j" jobs ]
-         ["dune" "runtest" "-p" name "-j" jobs] {with-test} ]
-depends: [
-  "ocaml" {>="4.05.0"}
-  "dune" {>= "1.2.0"}
-  "cstruct" {>= "1.6.0"}
-  "zarith"
-  "bigarray-compat"
-  "stdlib-shims"
-  "ptime"
-  "alcotest" {with-test}
-]
-description: """
-asn1-combinators is a library for expressing ASN.1 in OCaml. Skip the notation
-part of ASN.1, and embed the abstract syntax directly in the language. These
-abstract syntax representations can be used for parsing, serialization, or
-random testing.
-
-The only ASN.1 encodings currently supported are BER and DER.
-"""
-url {
-  src:
-    "https://github.com/mirleft/ocaml-asn1-combinators/releases/download/v0.2.2/asn1-combinators-v0.2.2.tbz"
-  checksum: [
-    "sha256=c9ebd5f9def090003918081cac680224eaefbf3def8aed8fe532b711a71d3631"
-    "sha512=199dda83814d7782183d67f9cdd6f5e8f036cbc1bcddec7ffd4adfd415ae024d1f7c720835eb173ab5e7455ed89acb99f88d0a30402c3edbfe6ca8a7182b217b"
-  ]
-}
diff --git a/esy.lock/opam/astring.0.8.3/opam b/esy.lock/opam/astring.0.8.3/opam
deleted file mode 100644
index 578ba1f..0000000
--- a/esy.lock/opam/astring.0.8.3/opam
+++ /dev/null
@@ -1,38 +0,0 @@
-opam-version: "2.0"
-maintainer: "Daniel Bünzli <daniel.buenzl i@erratique.ch>"
-authors: ["Daniel Bünzli <daniel.buenzl i@erratique.ch>"]
-homepage: "http://erratique.ch/software/astring"
-doc: "http://erratique.ch/software/astring/doc"
-dev-repo: "git+http://erratique.ch/repos/astring.git"
-bug-reports: "https://github.com/dbuenzli/astring/issues"
-tags: [ "string" "org:erratique" ]
-license: "ISC"
-depends: [
-  "ocaml" {>= "4.01.0"}
-  "ocamlfind" {build}
-  "ocamlbuild" {build}
-  "topkg" {build}
-  "base-bytes"
-]
-build: [[
-  "ocaml" "pkg/pkg.ml" "build"
-          "--pinned" "%{pinned}%" ]]
-synopsis: "Alternative String module for OCaml"
-description: """
-Astring exposes an alternative `String` module for OCaml. This module
-tries to balance minimality and expressiveness for basic, index-free,
-string processing and provides types and functions for substrings,
-string sets and string maps.
-
-Remaining compatible with the OCaml `String` module is a non-goal. The
-`String` module exposed by Astring has exception safe functions,
-removes deprecated and rarely used functions, alters some signatures
-and names, adds a few missing functions and fully exploits OCaml's
-newfound string immutability.
-
-Astring depends only on the OCaml standard library. It is distributed
-under the ISC license."""
-url {
-  src: "http://erratique.ch/software/astring/releases/astring-0.8.3.tbz"
-  checksum: "md5=c5bf6352b9ac27fbeab342740f4fa870"
-}
diff --git a/esy.lock/opam/atd.2.0.0/opam b/esy.lock/opam/atd.2.0.0/opam
deleted file mode 100644
index 2808354..0000000
--- a/esy.lock/opam/atd.2.0.0/opam
+++ /dev/null
@@ -1,34 +0,0 @@
-opam-version: "2.0"
-maintainer: "martin@mjambon.com"
-authors: ["Martin Jambon"]
-
-homepage: "https://github.com/mjambon/atd"
-bug-reports: "https://github.com/mjambon/atd/issues"
-dev-repo: "git://github.com/mjambon/atd.git"
-
-build: [
-  ["jbuilder" "subst" "-p" name] {pinned}
-  ["jbuilder" "build" "-p" name "-j" jobs]
-]
-
-# Restore when https://github.com/mjambon/atd/issues/121 is resolved.
-# build-test: [
-#   ["jbuilder" "runtest" "-p" name]
-# ]
-
-depends: [
-  "ocaml" {>= "4.03.0"}
-  "jbuilder"
-  "menhir" {build}
-  "easy-format"
-]
-synopsis: "Parser for the ATD data format description language"
-description: """
-ATD is the OCaml library providing a parser for the ATD language and
-various utilities. ATD stands for Adjustable Type Definitions in
-reference to its main property of supporting annotations that allow a
-good fit with a variety of data formats."""
-url {
-  src: "https://github.com/mjambon/atd/releases/download/2.0.0/atd-2.0.0.tbz"
-  checksum: "md5=14e47609397c524ea0eae7c3f14f7ccf"
-}
diff --git a/esy.lock/opam/atdgen-runtime.2.0.0/opam b/esy.lock/opam/atdgen-runtime.2.0.0/opam
deleted file mode 100644
index 7236d93..0000000
--- a/esy.lock/opam/atdgen-runtime.2.0.0/opam
+++ /dev/null
@@ -1,29 +0,0 @@
-opam-version: "2.0"
-maintainer: "martin@mjambon.com"
-authors: ["Martin Jambon"]
-
-homepage: "https://github.com/mjambon/atd"
-bug-reports: "https://github.com/mjambon/atd/issues"
-dev-repo: "git://github.com/mjambon/atd.git"
-
-build: [
-  ["jbuilder" "subst" "-p" name] {pinned}
-  ["jbuilder" "build" "-p" name "-j" jobs]
-]
-
-# Restore when https://github.com/mjambon/atd/issues/121 is resolved.
-# build-test: [
-#   ["jbuilder" "runtest" "-p" name]
-# ]
-
-depends: [
-  "ocaml" {>= "4.02.3"}
-  "jbuilder"
-  "biniou" {>= "1.0.6"}
-  "yojson" {>= "1.2.1"}
-]
-synopsis: "Runtime library for code generated by atdgen."
-url {
-  src: "https://github.com/mjambon/atd/releases/download/2.0.0/atd-2.0.0.tbz"
-  checksum: "md5=14e47609397c524ea0eae7c3f14f7ccf"
-}
diff --git a/esy.lock/opam/atdgen.2.0.0/opam b/esy.lock/opam/atdgen.2.0.0/opam
deleted file mode 100644
index d71d304..0000000
--- a/esy.lock/opam/atdgen.2.0.0/opam
+++ /dev/null
@@ -1,44 +0,0 @@
-opam-version: "2.0"
-maintainer: "martin@mjambon.com"
-authors: ["Martin Jambon"]
-
-homepage: "https://github.com/mjambon/atd"
-bug-reports: "https://github.com/mjambon/atd/issues"
-dev-repo: "git://github.com/mjambon/atd.git"
-
-build: [
-  ["jbuilder" "subst" "-p" name] {pinned}
-  ["jbuilder" "build" "-p" name "-j" jobs]
-]
-
-# Restore when https://github.com/mjambon/atd/issues/121 is resolved.
-# build-test: [
-#   ["jbuilder" "runtest" "-p" name]
-# ]
-
-depends: [
-  "ocaml" {>= "4.03.0"}
-  "jbuilder"
-  "atd" {>= "2.0.0"}
-  "atdgen-runtime" {>= "2.0.0"}
-  "biniou" {>= "1.0.6"}
-  "yojson" {>= "1.2.1"}
-]
-synopsis:
-  "Generates efficient JSON serializers, deserializers and validators"
-description: """
-Atdgen is a command-line program that takes as input type definitions in the
-ATD syntax and produces OCaml code suitable for data serialization and
-deserialization.
-
-Two data formats are currently supported, these are biniou and JSON.
-Atdgen-biniou and Atdgen-json will refer to Atdgen used in one context or the
-other.
-
-Atdgen was designed with efficiency and durability in mind. Software authors
-are encouraged to use Atdgen directly and to write tools that may reuse part of
-Atdgen’s source code."""
-url {
-  src: "https://github.com/mjambon/atd/releases/download/2.0.0/atd-2.0.0.tbz"
-  checksum: "md5=14e47609397c524ea0eae7c3f14f7ccf"
-}
diff --git a/esy.lock/opam/base-bytes.base/opam b/esy.lock/opam/base-bytes.base/opam
deleted file mode 100644
index f1cae50..0000000
--- a/esy.lock/opam/base-bytes.base/opam
+++ /dev/null
@@ -1,9 +0,0 @@
-opam-version: "2.0"
-maintainer: " "
-authors: " "
-homepage: " "
-depends: [
-  "ocaml" {>= "4.02.0"}
-  "ocamlfind" {>= "1.5.3"}
-]
-synopsis: "Bytes library distributed with the OCaml compiler"
diff --git a/esy.lock/opam/base-threads.base/opam b/esy.lock/opam/base-threads.base/opam
deleted file mode 100644
index 914ff50..0000000
--- a/esy.lock/opam/base-threads.base/opam
+++ /dev/null
@@ -1,6 +0,0 @@
-opam-version: "2.0"
-maintainer: "https://github.com/ocaml/opam-repository/issues"
-description: """
-Threads library distributed with the OCaml compiler
-"""
-
diff --git a/esy.lock/opam/base-unix.base/opam b/esy.lock/opam/base-unix.base/opam
deleted file mode 100644
index b973540..0000000
--- a/esy.lock/opam/base-unix.base/opam
+++ /dev/null
@@ -1,6 +0,0 @@
-opam-version: "2.0"
-maintainer: "https://github.com/ocaml/opam-repository/issues"
-description: """
-Unix library distributed with the OCaml compiler
-"""
-
diff --git a/esy.lock/opam/base.v0.13.1/opam b/esy.lock/opam/base.v0.13.1/opam
deleted file mode 100644
index e3c61b2..0000000
--- a/esy.lock/opam/base.v0.13.1/opam
+++ /dev/null
@@ -1,36 +0,0 @@
-opam-version: "2.0"
-maintainer: "opensource@janestreet.com"
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-homepage: "https://github.com/janestreet/base"
-bug-reports: "https://github.com/janestreet/base/issues"
-dev-repo: "git+https://github.com/janestreet/base.git"
-doc: "https://ocaml.janestreet.com/ocaml-core/latest/doc/base/index.html"
-license: "MIT"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml"    {>= "4.04.2"}
-  "sexplib0" {>= "v0.13" & < "v0.14"}
-  "dune"     {>= "1.5.1"}
-  "dune-configurator"
-]
-synopsis: "Full standard library replacement for OCaml"
-description: "
-Full standard library replacement for OCaml
-
-Base is a complete and portable alternative to the OCaml standard
-library. It provides all standard functionalities one would expect
-from a language standard library. It uses consistent conventions
-across all of its module.
-
-Base aims to be usable in any context. As a result system dependent
-features such as I/O are not offered by Base. They are instead
-provided by companion libraries such as stdio:
-
-  https://github.com/janestreet/stdio
-"
-url {
-  src: "https://github.com/janestreet/base/archive/v0.13.1.tar.gz"
-  checksum: "md5=296457416f9a8b75e6edfc3b1140e384"
-}
diff --git a/esy.lock/opam/base64.3.3.0/opam b/esy.lock/opam/base64.3.3.0/opam
deleted file mode 100644
index aedc7be..0000000
--- a/esy.lock/opam/base64.3.3.0/opam
+++ /dev/null
@@ -1,38 +0,0 @@
-opam-version: "2.0"
-maintainer: "mirageos-devel@lists.xenproject.org"
-authors: [ "Thomas Gazagnaire"
-           "Anil Madhavapeddy" "Calascibetta Romain"
-           "Peter Zotov" ]
-license: "ISC"
-homepage: "https://github.com/mirage/ocaml-base64"
-doc: "http://mirage.github.io/ocaml-base64/"
-bug-reports: "https://github.com/mirage/ocaml-base64/issues"
-dev-repo: "git+https://github.com/mirage/ocaml-base64.git"
-synopsis: "Base64 encoding for OCaml"
-description: """
-Base64 is a group of similar binary-to-text encoding schemes that represent
-binary data in an ASCII string format by translating it into a radix-64
-representation.  It is specified in RFC 4648.
-"""
-depends: [
-  "ocaml" {>="4.03.0"}
-  "base-bytes"
-  "dune-configurator"
-  "dune" {>= "2.0"}
-  "bos" {with-test}
-  "rresult" {with-test}
-  "alcotest" {with-test & < "1.0.0"}
-]
-build: [
-  ["dune" "subst"]
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name] {with-test}
-]
-url {
-  src:
-    "https://github.com/mirage/ocaml-base64/releases/download/v3.3.0/base64-v3.3.0.tbz"
-  checksum: [
-    "sha256=3ae91334f029ccd96690b598010f94e55811095d14a37d52f1724e5eca0f35cc"
-    "sha512=818103de0ac03b9a04f5aafc119341522bf69e57dfbd038b321f92ab8cbf7fc7084ca3012086baece12da94d4d5448eb927f70b741025a13d49e93ca6ea27d41"
-  ]
-}
diff --git a/esy.lock/opam/bigarray-compat.1.0.0/opam b/esy.lock/opam/bigarray-compat.1.0.0/opam
deleted file mode 100644
index 9375151..0000000
--- a/esy.lock/opam/bigarray-compat.1.0.0/opam
+++ /dev/null
@@ -1,23 +0,0 @@
-opam-version: "2.0"
-synopsis: "Compatibility library to use Stdlib.Bigarray when possible"
-maintainer: "Lucas Pluvinage <lucas.pluvinage@gmail.com>"
-authors: "Lucas Pluvinage <lucas.pluvinage@gmail.com>"
-license: "ISC"
-homepage: "https://github.com/mirage/bigarray-compat"
-bug-reports: "https://github.com/mirage/bigarray-compat/issues"
-depends: [
-  "ocaml" {>= "4.03.0"}
-  "dune" {>= "1.0"}
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-]
-dev-repo: "git+https://github.com/mirage/bigarray-compat.git"
-url {
-  src: "https://github.com/mirage/bigarray-compat/archive/v1.0.0.tar.gz"
-  checksum: [
-    "md5=1cc7c25382a8900bada34aadfd66632e"
-    "sha512=c365fee15582aca35d7b05268cde29e54774ad7df7be56762b4aad78ca1409d4326ad3b34af0f1cc2c7b872837290a9cd9ff43b47987c03bba7bba32fe8a030f"
-  ]
-}
\ No newline at end of file
diff --git a/esy.lock/opam/biniou.1.2.1/opam b/esy.lock/opam/biniou.1.2.1/opam
deleted file mode 100644
index b706b42..0000000
--- a/esy.lock/opam/biniou.1.2.1/opam
+++ /dev/null
@@ -1,45 +0,0 @@
-opam-version: "2.0"
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-  ["dune" "build" "-p" name "@doc"] {with-doc}
-]
-maintainer: ["martin@mjambon.com"]
-authors: ["Martin Jambon"]
-bug-reports: "https://github.com/mjambon/biniou/issues"
-homepage: "https://github.com/mjambon/biniou"
-doc: "https://mjambon.github.io/biniou/"
-license: "BSD-3-Clause"
-dev-repo: "git+https://github.com/mjambon/biniou.git"
-synopsis:
-  "Binary data format designed for speed, safety, ease of use and backward compatibility as protocols evolve"
-description: """
-
-Biniou (pronounced "be new") is a binary data format designed for speed, safety,
-ease of use and backward compatibility as protocols evolve. Biniou is vastly
-equivalent to JSON in terms of functionality but allows implementations several
-times faster (4 times faster than yojson), with 25-35% space savings.
-
-Biniou data can be decoded into human-readable form without knowledge of type
-definitions except for field and variant names which are represented by 31-bit
-hashes. A program named bdump is provided for routine visualization of biniou
-data files.
-
-The program atdgen is used to derive OCaml-Biniou serializers and deserializers
-from type definitions.
-
-Biniou format specification: mjambon.github.io/atdgen-doc/biniou-format.txt"""
-depends: [
-  "easy-format"
-  "dune" {>= "1.10"}
-  "ocaml" {>= "4.02.3"}
-]
-url {
-  src:
-    "https://github.com/mjambon/biniou/releases/download/1.2.1/biniou-1.2.1.tbz"
-  checksum: [
-    "sha256=35546c68b1929a8e6d27a3b39ecd17b38303a0d47e65eb9d1480c2061ea84335"
-    "sha512=82670cc77bf3e869ee26e5fbe5a5affa45a22bc8b6c4bd7e85473912780e0111baca59b34a2c14feae3543ce6e239d7fddaeab24b686a65bfe642cdb91d27ebf"
-  ]
-}
diff --git a/esy.lock/opam/cmdliner.1.0.4/opam b/esy.lock/opam/cmdliner.1.0.4/opam
deleted file mode 100644
index b2187dc..0000000
--- a/esy.lock/opam/cmdliner.1.0.4/opam
+++ /dev/null
@@ -1,36 +0,0 @@
-opam-version: "2.0"
-maintainer: "Daniel Bünzli <daniel.buenzl i@erratique.ch>"
-authors: ["Daniel Bünzli <daniel.buenzl i@erratique.ch>"]
-homepage: "http://erratique.ch/software/cmdliner"
-doc: "http://erratique.ch/software/cmdliner/doc/Cmdliner"
-dev-repo: "git+http://erratique.ch/repos/cmdliner.git"
-bug-reports: "https://github.com/dbuenzli/cmdliner/issues"
-tags: [ "cli" "system" "declarative" "org:erratique" ]
-license: "ISC"
-depends:[ "ocaml" {>= "4.03.0"} ]
-build: [[ make "all" "PREFIX=%{prefix}%" ]]
-install:
-[[make "install" "LIBDIR=%{_:lib}%" "DOCDIR=%{_:doc}%" ]
- [make "install-doc" "LIBDIR=%{_:lib}%" "DOCDIR=%{_:doc}%"  ]]
-
-synopsis: """Declarative definition of command line interfaces for OCaml"""
-description: """\
-
-Cmdliner allows the declarative definition of command line interfaces
-for OCaml.
-
-It provides a simple and compositional mechanism to convert command
-line arguments to OCaml values and pass them to your functions. The
-module automatically handles syntax errors, help messages and UNIX man
-page generation. It supports programs with single or multiple commands
-and respects most of the [POSIX][1] and [GNU][2] conventions.
-
-Cmdliner has no dependencies and is distributed under the ISC license.
-
-[1]: http://pubs.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap12.html
-[2]: http://www.gnu.org/software/libc/manual/html_node/Argument-Syntax.html
-"""
-url {
-archive: "http://erratique.ch/software/cmdliner/releases/cmdliner-1.0.4.tbz"
-checksum: "fe2213d0bc63b1e10a2d0aa66d2fc8d9"
-}
diff --git a/esy.lock/opam/cohttp-lwt-unix.2.5.1/opam b/esy.lock/opam/cohttp-lwt-unix.2.5.1/opam
deleted file mode 100644
index 8cece4e..0000000
--- a/esy.lock/opam/cohttp-lwt-unix.2.5.1/opam
+++ /dev/null
@@ -1,53 +0,0 @@
-opam-version: "2.0"
-maintainer: "anil@recoil.org"
-authors: [
-  "Anil Madhavapeddy"
-  "Stefano Zacchiroli"
-  "David Sheets"
-  "Thomas Gazagnaire"
-  "David Scott"
-  "Rudi Grinberg"
-  "Andy Ray"
-]
-synopsis: "CoHTTP implementation for Unix and Windows using Lwt"
-description: """
-An implementation of an HTTP client and server using the Lwt
-concurrency library. See the `Cohttp_lwt_unix` module for information
-on how to use this.  The package also installs `cohttp-curl-lwt`
-and a `cohttp-server-lwt` binaries for quick uses of a HTTP(S)
-client and server respectively.
-
-Although the name implies that this only works under Unix, it
-should also be fine under Windows too."""
-license: "ISC"
-tags: ["org:mirage" "org:xapi-project"]
-homepage: "https://github.com/mirage/ocaml-cohttp"
-doc: "https://mirage.github.io/ocaml-cohttp/"
-bug-reports: "https://github.com/mirage/ocaml-cohttp/issues"
-depends: [
-  "ocaml" {>= "4.04.1"}
-  "dune" {>= "1.1.0"}
-  "conduit-lwt-unix" {>= "1.0.3"}
-  "cmdliner"
-  "magic-mime"
-  "logs"
-  "fmt" {>= "0.8.2"}
-  "cohttp-lwt" {=version}
-  "lwt" {>= "3.0.0"}
-  "base-unix"
-  "ounit" {with-test}
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-dev-repo: "git+https://github.com/mirage/ocaml-cohttp.git"
-url {
-  src:
-    "https://github.com/mirage/ocaml-cohttp/releases/download/v2.5.1/cohttp-v2.5.1.tbz"
-  checksum: [
-    "sha256=268de1479bf010c16f1de1ab5f9c75595dfdcafb2017ed4e73f8773b620da946"
-    "sha512=051aa57ad631ba766f22f6ebc0746545fc74ca1180206c695deb1ca73800f7ea436c88f95a0bb1d78a8dc1da0685a19553cdacd04667893022215bedbc2b880a"
-  ]
-}
diff --git a/esy.lock/opam/cohttp-lwt.2.5.1/opam b/esy.lock/opam/cohttp-lwt.2.5.1/opam
deleted file mode 100644
index e43ee33..0000000
--- a/esy.lock/opam/cohttp-lwt.2.5.1/opam
+++ /dev/null
@@ -1,49 +0,0 @@
-opam-version: "2.0"
-maintainer: "anil@recoil.org"
-authors: [
-  "Anil Madhavapeddy"
-  "Stefano Zacchiroli"
-  "David Sheets"
-  "Thomas Gazagnaire"
-  "David Scott"
-  "Rudi Grinberg"
-  "Andy Ray"
-]
-synopsis: "CoHTTP implementation using the Lwt concurrency library"
-description: """
-This is a portable implementation of HTTP that uses the Lwt
-concurrency library to multiplex IO.  It implements as much of the
-logic in an OS-independent way as possible, so that more specialised
-modules can be tailored for different targets.  For example, you
-can install `cohttp-lwt-unix` or `cohttp-lwt-jsoo` for a Unix or
-JavaScript backend, or `cohttp-mirage` for the MirageOS unikernel
-version of the library. All of these implementations share the same
-IO logic from this module."""
-license: "ISC"
-tags: ["org:mirage" "org:xapi-project"]
-homepage: "https://github.com/mirage/ocaml-cohttp"
-doc: "https://mirage.github.io/ocaml-cohttp/"
-bug-reports: "https://github.com/mirage/ocaml-cohttp/issues"
-depends: [
-  "ocaml" {>= "4.04.1"}
-  "dune" {>= "1.1.0"}
-  "cohttp" {=version}
-  "lwt" {>= "2.5.0"}
-  "sexplib0"
-  "ppx_sexp_conv" {>= "v0.13.0"}
-  "logs"
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-dev-repo: "git+https://github.com/mirage/ocaml-cohttp.git"
-url {
-  src:
-    "https://github.com/mirage/ocaml-cohttp/releases/download/v2.5.1/cohttp-v2.5.1.tbz"
-  checksum: [
-    "sha256=268de1479bf010c16f1de1ab5f9c75595dfdcafb2017ed4e73f8773b620da946"
-    "sha512=051aa57ad631ba766f22f6ebc0746545fc74ca1180206c695deb1ca73800f7ea436c88f95a0bb1d78a8dc1da0685a19553cdacd04667893022215bedbc2b880a"
-  ]
-}
diff --git a/esy.lock/opam/cohttp.2.5.1/opam b/esy.lock/opam/cohttp.2.5.1/opam
deleted file mode 100644
index 0ffdde6..0000000
--- a/esy.lock/opam/cohttp.2.5.1/opam
+++ /dev/null
@@ -1,64 +0,0 @@
-opam-version: "2.0"
-maintainer: "anil@recoil.org"
-authors: [
-  "Anil Madhavapeddy"
-  "Stefano Zacchiroli"
-  "David Sheets"
-  "Thomas Gazagnaire"
-  "David Scott"
-  "Rudi Grinberg"
-  "Andy Ray"
-]
-synopsis: "An OCaml library for HTTP clients and servers"
-description: """
-Cohttp is an OCaml library for creating HTTP daemons. It has a portable
-HTTP parser, and implementations using various asynchronous programming
-libraries.
-
-See the cohttp-async, cohttp-lwt, cohttp-lwt-unix, cohttp-lwt-jsoo and
-cohttp-mirage libraries for concrete implementations for particular
-targets.
-
-You can implement other targets using the parser very easily. Look at the `IO`
-signature in `lib/s.mli` and implement that in the desired backend.
-
-You can activate some runtime debugging by setting `COHTTP_DEBUG` to any
-value, and all requests and responses will be written to stderr.  Further
-debugging of the connection layer can be obtained by setting `CONDUIT_DEBUG`
-to any value."""
-license: "ISC"
-tags: ["org:mirage" "org:xapi-project"]
-homepage: "https://github.com/mirage/ocaml-cohttp"
-doc: "https://mirage.github.io/ocaml-cohttp/"
-bug-reports: "https://github.com/mirage/ocaml-cohttp/issues"
-depends: [
-  "ocaml" {>= "4.04.1"}
-  "dune" {>= "1.1.0"}
-  "re" {>= "1.9.0"}
-  "uri" {>= "2.0.0"}
-  "uri-sexp"
-  "fieldslib"
-  "sexplib0"
-  "ppx_fields_conv" {>= "v0.9.0"}
-  "ppx_sexp_conv" {>= "v0.13.0"}
-  "stringext"
-  "base64" {>= "3.1.0"}
-  "stdlib-shims"
-  "fmt" {with-test}
-  "jsonm" {build}
-  "alcotest" {with-test}
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-dev-repo: "git+https://github.com/mirage/ocaml-cohttp.git"
-url {
-  src:
-    "https://github.com/mirage/ocaml-cohttp/releases/download/v2.5.1/cohttp-v2.5.1.tbz"
-  checksum: [
-    "sha256=268de1479bf010c16f1de1ab5f9c75595dfdcafb2017ed4e73f8773b620da946"
-    "sha512=051aa57ad631ba766f22f6ebc0746545fc74ca1180206c695deb1ca73800f7ea436c88f95a0bb1d78a8dc1da0685a19553cdacd04667893022215bedbc2b880a"
-  ]
-}
diff --git a/esy.lock/opam/conduit-lwt-unix.2.0.2/opam b/esy.lock/opam/conduit-lwt-unix.2.0.2/opam
deleted file mode 100644
index 1ea42ed..0000000
--- a/esy.lock/opam/conduit-lwt-unix.2.0.2/opam
+++ /dev/null
@@ -1,39 +0,0 @@
-opam-version: "2.0"
-maintainer: "anil@recoil.org"
-authors: [
-  "Anil Madhavapeddy" "Thomas Leonard" "Thomas Gazagnaire" "Rudi Grinberg"
-]
-license: "ISC"
-tags: "org:mirage"
-homepage: "https://github.com/mirage/ocaml-conduit"
-bug-reports: "https://github.com/mirage/ocaml-conduit/issues"
-depends: [
-  "ocaml" {>= "4.03.0"}
-  "dune"
-  "base-unix"
-  "ppx_sexp_conv" {>= "v0.9.0" & < "v0.14"}
-  "conduit-lwt" {=version}
-  "lwt" {>= "3.0.0"}
-  "uri" {>= "1.9.4"}
-  "ipaddr" {>= "4.0.0"}
-  "ipaddr-sexp"
-]
-depopts: ["tls" "lwt_ssl" "launchd"]
-conflicts: [
-  "tls" {< "0.8.0"}
-  "ssl" {< "0.5.9"}
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-]
-dev-repo: "git+https://github.com/mirage/ocaml-conduit.git"
-synopsis: "A network connection establishment library for Lwt_unix"
-url {
-  src:
-    "https://github.com/mirage/ocaml-conduit/releases/download/v2.0.2/conduit-v2.0.2.tbz"
-  checksum: [
-    "sha256=2510372ed98c7e0446d788317a435f752d900d72df0fbe4c353f5e5bfb9d1dd2"
-    "sha512=3e25b754c84dd603acbb4d810b532c3cfb273808b9bf9a17890e40b79e65529d17cd66d613a447cb2a7f51f0522f17d46ab0ade5c79cb2a3c8565efd484238ae"
-  ]
-}
diff --git a/esy.lock/opam/conduit-lwt.2.0.2/opam b/esy.lock/opam/conduit-lwt.2.0.2/opam
deleted file mode 100644
index 54dce05..0000000
--- a/esy.lock/opam/conduit-lwt.2.0.2/opam
+++ /dev/null
@@ -1,32 +0,0 @@
-opam-version: "2.0"
-maintainer: "anil@recoil.org"
-authors: [
-  "Anil Madhavapeddy" "Thomas Leonard" "Thomas Gazagnaire" "Rudi Grinberg"
-]
-license: "ISC"
-tags: "org:mirage"
-homepage: "https://github.com/mirage/ocaml-conduit"
-bug-reports: "https://github.com/mirage/ocaml-conduit/issues"
-depends: [
-  "ocaml" {>= "4.03.0"}
-  "dune"
-  "base-unix"
-  "ppx_sexp_conv" {>= "v0.9.0" & < "v0.14"}
-  "sexplib" {< "v0.14"}
-  "conduit" {=version}
-  "lwt" {>= "3.0.0"}
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-]
-dev-repo: "git+https://github.com/mirage/ocaml-conduit.git"
-synopsis: "A portable network connection establishment library using Lwt"
-url {
-  src:
-    "https://github.com/mirage/ocaml-conduit/releases/download/v2.0.2/conduit-v2.0.2.tbz"
-  checksum: [
-    "sha256=2510372ed98c7e0446d788317a435f752d900d72df0fbe4c353f5e5bfb9d1dd2"
-    "sha512=3e25b754c84dd603acbb4d810b532c3cfb273808b9bf9a17890e40b79e65529d17cd66d613a447cb2a7f51f0522f17d46ab0ade5c79cb2a3c8565efd484238ae"
-  ]
-}
diff --git a/esy.lock/opam/conduit.2.0.2/opam b/esy.lock/opam/conduit.2.0.2/opam
deleted file mode 100644
index b3404dc..0000000
--- a/esy.lock/opam/conduit.2.0.2/opam
+++ /dev/null
@@ -1,56 +0,0 @@
-opam-version: "2.0"
-maintainer: "anil@recoil.org"
-authors: [
-  "Anil Madhavapeddy" "Thomas Leonard" "Thomas Gazagnaire" "Rudi Grinberg"
-]
-license: "ISC"
-tags: "org:mirage"
-homepage: "https://github.com/mirage/ocaml-conduit"
-doc: "https://mirage.github.io/ocaml-conduit/"
-bug-reports: "https://github.com/mirage/ocaml-conduit/issues"
-depends: [
-  "ocaml" {>= "4.03.0"}
-  "dune"
-  "ppx_sexp_conv" {>= "v0.9.0" & < "v0.14"}
-  "sexplib" {< "v0.14"}
-  "astring"
-  "uri"
-  "logs" {>= "0.5.0"}
-  "ipaddr" {>= "4.0.0"}
-  "ipaddr-sexp"
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-]
-dev-repo: "git+https://github.com/mirage/ocaml-conduit.git"
-synopsis: "A network connection establishment library"
-description: """
-The `conduit` library takes care of establishing and listening for 
-TCP and SSL/TLS connections for the Lwt and Async libraries.
-
-The reason this library exists is to provide a degree of abstraction
-from the precise SSL library used, since there are a variety of ways
-to bind to a library (e.g. the C FFI, or the Ctypes library), as well
-as well as which library is used (just OpenSSL for now).
-
-By default, OpenSSL is used as the preferred connection library, but
-you can force the use of the pure OCaml TLS stack by setting the
-environment variable `CONDUIT_TLS=native` when starting your program.
-
-The useful opam packages available that extend this library are:
-
-- `conduit`: the main `Conduit` module
-- `conduit-lwt`: the portable Lwt implementation
-- `conduit-lwt-unix`: the Lwt/Unix implementation
-- `conduit-async` the Jane Street Async implementation
-- `conduit-mirage`: the MirageOS compatible implementation
-"""
-url {
-  src:
-    "https://github.com/mirage/ocaml-conduit/releases/download/v2.0.2/conduit-v2.0.2.tbz"
-  checksum: [
-    "sha256=2510372ed98c7e0446d788317a435f752d900d72df0fbe4c353f5e5bfb9d1dd2"
-    "sha512=3e25b754c84dd603acbb4d810b532c3cfb273808b9bf9a17890e40b79e65529d17cd66d613a447cb2a7f51f0522f17d46ab0ade5c79cb2a3c8565efd484238ae"
-  ]
-}
diff --git a/esy.lock/opam/conf-m4.1/opam b/esy.lock/opam/conf-m4.1/opam
deleted file mode 100644
index c6feb2a..0000000
--- a/esy.lock/opam/conf-m4.1/opam
+++ /dev/null
@@ -1,22 +0,0 @@
-opam-version: "2.0"
-maintainer: "tim@gfxmonk.net"
-homepage: "http://www.gnu.org/software/m4/m4.html"
-bug-reports: "https://github.com/ocaml/opam-repository/issues"
-authors: "GNU Project"
-license: "GPL-3.0-only"
-build: [["sh" "-exc" "echo | m4"]]
-depexts: [
-  ["m4"] {os-family = "debian"}
-  ["m4"] {os-distribution = "fedora"}
-  ["m4"] {os-distribution = "rhel"}
-  ["m4"] {os-distribution = "centos"}
-  ["m4"] {os-distribution = "alpine"}
-  ["m4"] {os-distribution = "nixos"}
-  ["m4"] {os-family = "suse"}
-  ["m4"] {os-distribution = "ol"}
-  ["m4"] {os-distribution = "arch"}
-]
-synopsis: "Virtual package relying on m4"
-description:
-  "This package can only install if the m4 binary is installed on the system."
-flags: conf
diff --git a/esy.lock/opam/conf-perl.1/opam b/esy.lock/opam/conf-perl.1/opam
deleted file mode 100644
index 7886c6f..0000000
--- a/esy.lock/opam/conf-perl.1/opam
+++ /dev/null
@@ -1,18 +0,0 @@
-opam-version: "2.0"
-maintainer: "tim@gfxmonk.net"
-homepage: "https://www.perl.org/"
-bug-reports: "https://github.com/ocaml/opam-repository/issues"
-license: "GPL-1.0-or-later"
-authors: "Larry Wall"
-build: [["perl" "--version"]]
-depexts: [
-  ["perl"] {os-family = "debian"}
-  ["perl"] {os-distribution = "alpine"}
-  ["perl"] {os-distribution = "nixos"}
-  ["perl"] {os-distribution = "arch"}
-  ["perl-Pod-Html"] {os-distribution = "fedora"}
-]
-synopsis: "Virtual package relying on perl"
-description:
-  "This package can only install if the perl program is installed on the system."
-flags: conf
diff --git a/esy.lock/opam/cppo.1.6.6/opam b/esy.lock/opam/cppo.1.6.6/opam
deleted file mode 100644
index f683f8b..0000000
--- a/esy.lock/opam/cppo.1.6.6/opam
+++ /dev/null
@@ -1,37 +0,0 @@
-opam-version: "2.0"
-maintainer: "martin@mjambon.com"
-authors: "Martin Jambon"
-license: "BSD-3-Clause"
-homepage: "http://mjambon.com/cppo.html"
-doc: "https://ocaml-community.github.io/cppo/"
-bug-reports: "https://github.com/ocaml-community/cppo/issues"
-depends: [
-  "ocaml" {>= "4.03"}
-  "dune" {>= "1.0"}
-  "base-unix"
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-dev-repo: "git+https://github.com/ocaml-community/cppo.git"
-synopsis: "Code preprocessor like cpp for OCaml"
-description: """
-Cppo is an equivalent of the C preprocessor for OCaml programs.
-It allows the definition of simple macros and file inclusion.
-
-Cppo is:
-
-* more OCaml-friendly than cpp
-* easy to learn without consulting a manual
-* reasonably fast
-* simple to install and to maintain
-"""
-url {
-  src: "https://github.com/ocaml-community/cppo/releases/download/v1.6.6/cppo-v1.6.6.tbz"
-  checksum: [
-    "sha256=e7272996a7789175b87bb998efd079794a8db6625aae990d73f7b4484a07b8a0"
-    "sha512=44ecf9d225d9e45490a2feac0bde04865ca398dba6c3579e3370fcd1ea255707b8883590852af8b2df87123801062b9f3acce2455c092deabf431f9c4fb8d8eb"
-  ]
-}
diff --git a/esy.lock/opam/cpuid.0.1.2/opam b/esy.lock/opam/cpuid.0.1.2/opam
deleted file mode 100644
index fe2efa1..0000000
--- a/esy.lock/opam/cpuid.0.1.2/opam
+++ /dev/null
@@ -1,22 +0,0 @@
-opam-version: "2.0"
-maintainer: "David Kaloper Meršinjak <dk505@cam.ac.uk>"
-authors: ["David Kaloper Meršinjak <dk505@cam.ac.uk>"]
-homepage: "https://github.com/pqwy/cpuid"
-doc: "https://pqwy.github.io/cpuid/doc"
-license: "ISC"
-dev-repo: "git+https://github.com/pqwy/cpuid.git"
-bug-reports: "https://github.com/pqwy/cpuid/issues"
-build: [ ["dune" "subst"] {pinned}
-         ["dune" "build" "-p" name "-j" jobs ]
-         ["dune" "runtest"] {with-test} ]
-depends: [
-  "ocaml" {>="4.03.0"}
-  "dune" {>= "1.7"}
-  ]
-synopsis: "Detect CPU features"
-description: "CPUID"
-url {
-  src:
-    "https://github.com/pqwy/cpuid/releases/download/v0.1.2/cpuid-v0.1.2.tbz"
-  checksum: "md5=21079a17bcf6cfe92e2f706b9d0d6d8d"
-}
diff --git a/esy.lock/opam/cstruct-lwt.5.1.1/opam b/esy.lock/opam/cstruct-lwt.5.1.1/opam
deleted file mode 100644
index 4ce24c9..0000000
--- a/esy.lock/opam/cstruct-lwt.5.1.1/opam
+++ /dev/null
@@ -1,35 +0,0 @@
-opam-version: "2.0"
-maintainer:   "anil@recoil.org"
-authors:      ["Anil Madhavapeddy" "Richard Mortier" "Thomas Gazagnaire"
-               "Pierre Chambart" "David Kaloper" "Jeremy Yallop" "David Scott"
-               "Mindy Preston" "Thomas Leonard" "Etienne Millon" ]
-homepage:     "https://github.com/mirage/ocaml-cstruct"
-license:      "ISC"
-dev-repo: "git+https://github.com/mirage/ocaml-cstruct.git"
-bug-reports:  "https://github.com/mirage/ocaml-cstruct/issues"
-doc: "https://mirage.github.io/ocaml-cstruct/"
-tags: [ "org:mirage" "org:ocamllabs" ]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml" {>= "4.03.0"}
-  "base-unix"
-  "dune"
-  "lwt"
-  "cstruct" {=version}
-]
-synopsis: "Access C-like structures directly from OCaml"
-description: """
-Cstruct is a library and syntax extension to make it easier to access C-like
-structures directly from OCaml.  It supports both reading and writing to these
-structures, and they are accessed via the `Bigarray` module."""
-url {
-  src:
-    "https://github.com/mirage/ocaml-cstruct/releases/download/v5.1.1/cstruct-v5.1.1.tbz"
-  checksum: [
-    "sha256=55d1f42cb85f7872fee499c5ed382aea17b06d55d1709e071d1ba85c7a09fef3"
-    "sha512=c3aa9a5a9125a1d022506a76fd7cdf32b21edcdc9df1202d8a9f382d02a28a33fea9a958f79e9302907ade1fce3f166b620c320aed6486e3efcc9a7464379cab"
-  ]
-}
diff --git a/esy.lock/opam/cstruct-sexp.5.1.1/opam b/esy.lock/opam/cstruct-sexp.5.1.1/opam
deleted file mode 100644
index 1ffb2ff..0000000
--- a/esy.lock/opam/cstruct-sexp.5.1.1/opam
+++ /dev/null
@@ -1,39 +0,0 @@
-opam-version: "2.0"
-maintainer:   "anil@recoil.org"
-authors:      ["Anil Madhavapeddy" "Richard Mortier" "Thomas Gazagnaire"
-               "Pierre Chambart" "David Kaloper" "Jeremy Yallop" "David Scott"
-               "Mindy Preston" "Thomas Leonard" "Anton Kochkov" "Etienne Millon" ]
-homepage:     "https://github.com/mirage/ocaml-cstruct"
-license:      "ISC"
-dev-repo: "git+https://github.com/mirage/ocaml-cstruct.git"
-bug-reports:  "https://github.com/mirage/ocaml-cstruct/issues"
-doc: "https://mirage.github.io/ocaml-cstruct/"
-
-tags: [ "org:mirage" "org:ocamllabs" ]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-depends: [
-  "ocaml" {>= "4.03.0"}
-  "dune"
-  "sexplib"
-  "cstruct" {=version}
-  "alcotest" {with-test}
-]
-synopsis: "S-expression serialisers for C-like structures"
-description: """
-Cstruct is a library and syntax extension to make it easier to access C-like
-structures directly from OCaml.  It supports both reading and writing to these
-structures, and they are accessed via the `Bigarray` module.
-
-This library provides Sexplib serialisers for the Cstruct.t values."""
-url {
-  src:
-    "https://github.com/mirage/ocaml-cstruct/releases/download/v5.1.1/cstruct-v5.1.1.tbz"
-  checksum: [
-    "sha256=55d1f42cb85f7872fee499c5ed382aea17b06d55d1709e071d1ba85c7a09fef3"
-    "sha512=c3aa9a5a9125a1d022506a76fd7cdf32b21edcdc9df1202d8a9f382d02a28a33fea9a958f79e9302907ade1fce3f166b620c320aed6486e3efcc9a7464379cab"
-  ]
-}
diff --git a/esy.lock/opam/cstruct.5.1.1/opam b/esy.lock/opam/cstruct.5.1.1/opam
deleted file mode 100644
index 0f04e62..0000000
--- a/esy.lock/opam/cstruct.5.1.1/opam
+++ /dev/null
@@ -1,37 +0,0 @@
-opam-version: "2.0"
-maintainer:   "anil@recoil.org"
-authors:      ["Anil Madhavapeddy" "Richard Mortier" "Thomas Gazagnaire"
-               "Pierre Chambart" "David Kaloper" "Jeremy Yallop" "David Scott"
-               "Mindy Preston" "Thomas Leonard" "Anton Kochkov" "Etienne Millon" ]
-homepage:     "https://github.com/mirage/ocaml-cstruct"
-license:      "ISC"
-dev-repo: "git+https://github.com/mirage/ocaml-cstruct.git"
-bug-reports:  "https://github.com/mirage/ocaml-cstruct/issues"
-doc: "https://mirage.github.io/ocaml-cstruct/"
-
-tags: [ "org:mirage" "org:ocamllabs" ]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-depends: [
-  "ocaml" {>= "4.03.0"}
-  "dune"
-  "bigarray-compat"
-  "alcotest" {with-test}
-]
-conflicts: [ "js_of_ocaml" {<"3.5.0"} ]
-synopsis: "Access C-like structures directly from OCaml"
-description: """
-Cstruct is a library and syntax extension to make it easier to access C-like
-structures directly from OCaml.  It supports both reading and writing to these
-structures, and they are accessed via the `Bigarray` module."""
-url {
-  src:
-    "https://github.com/mirage/ocaml-cstruct/releases/download/v5.1.1/cstruct-v5.1.1.tbz"
-  checksum: [
-    "sha256=55d1f42cb85f7872fee499c5ed382aea17b06d55d1709e071d1ba85c7a09fef3"
-    "sha512=c3aa9a5a9125a1d022506a76fd7cdf32b21edcdc9df1202d8a9f382d02a28a33fea9a958f79e9302907ade1fce3f166b620c320aed6486e3efcc9a7464379cab"
-  ]
-}
diff --git a/esy.lock/opam/domain-name.0.3.0/opam b/esy.lock/opam/domain-name.0.3.0/opam
deleted file mode 100644
index 298475c..0000000
--- a/esy.lock/opam/domain-name.0.3.0/opam
+++ /dev/null
@@ -1,37 +0,0 @@
-opam-version: "2.0"
-maintainer: "Hannes Mehnert <hannes@mehnert.org>"
-authors: "Hannes Mehnert <hannes@mehnert.org>"
-license: "ISC"
-homepage: "https://github.com/hannesm/domain-name"
-doc: "https://hannesm.github.io/domain-name/doc"
-bug-reports: "https://github.com/hannesm/domain-name/issues"
-depends: [
-  "ocaml" {>= "4.04.2"}
-  "dune"
-  "fmt"
-  "astring"
-  "alcotest" {with-test}
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-dev-repo: "git+https://github.com/hannesm/domain-name.git"
-synopsis: "RFC 1035 Internet domain names"
-description: """
-A domain name is a sequence of labels separated by dots, such as `foo.example`.
-Each label may contain any bytes. The length of each label may not exceed 63
-charactes.  The total length of a domain name is limited to 253 (byte
-representation is 255), but other protocols (such as SMTP) may apply even
-smaller limits.  A domain name label is case preserving, comparison is done in a
-case insensitive manner.
-"""
-url {
-  src:
-    "https://github.com/hannesm/domain-name/releases/download/v0.3.0/domain-name-v0.3.0.tbz"
-  checksum: [
-    "sha256=4dd9ed1bc619886d1adcaff14edfb503dedb77fc0b7a28d88d213aa1c44d6c8a"
-    "sha512=8229766b20a44622d3a94250c6909dbe64269aab6dde8dd13f6b1c027d63e119658fd35b459c6556817ab583bbfdbc5dbea97d3022f590184d70a72ecd7c0a34"
-  ]
-}
diff --git a/esy.lock/opam/dune-configurator.2.3.1/opam b/esy.lock/opam/dune-configurator.2.3.1/opam
deleted file mode 100644
index fe4119d..0000000
--- a/esy.lock/opam/dune-configurator.2.3.1/opam
+++ /dev/null
@@ -1,43 +0,0 @@
-opam-version: "2.0"
-synopsis: "Helper library for gathering system configuration"
-description: """
-dune-configurator is a small library that helps writing OCaml scripts that
-test features available on the system, in order to generate config.h
-files for instance.
-Among other things, dune-configurator allows one to:
-- test if a C program compiles
-- query pkg-config
-- import #define from OCaml header files
-- generate config.h file
-"""
-maintainer: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-license: "MIT"
-homepage: "https://github.com/ocaml/dune"
-doc: "https://dune.readthedocs.io/"
-bug-reports: "https://github.com/ocaml/dune/issues"
-depends: [
-  "dune" {>= "2.3"}
-  "dune-private-libs" {= version}
-]
-dev-repo: "git+https://github.com/ocaml/dune.git"
-build: [
-  ["dune" "subst"] {pinned}
-  [
-    "dune"
-    "build"
-    "-p"
-    name
-    "-j"
-    jobs
-    "@install"
-    "@doc" {with-doc}
-  ]
-]
-url {
-  src: "https://github.com/ocaml/dune/releases/download/2.3.1/dune-2.3.1.tbz"
-  checksum: [
-    "sha256=b2b3dd9cdfd34ef8c4583ea8c52c3503c2395bf94c264af19d6450547e12f5cb"
-    "sha512=023fe4ddf743b8de24de0d7d2e6d5d0f85e459c5044aa4ba3de02cf63113d54d79004cc8ea8f7a958b324e9cbeef0845ec6a0f65454bc6a2e635e8944d28a0f9"
-  ]
-}
diff --git a/esy.lock/opam/dune-private-libs.2.3.1/opam b/esy.lock/opam/dune-private-libs.2.3.1/opam
deleted file mode 100644
index caac6d7..0000000
--- a/esy.lock/opam/dune-private-libs.2.3.1/opam
+++ /dev/null
@@ -1,42 +0,0 @@
-opam-version: "2.0"
-synopsis: "Private libraries of Dune"
-description: """
-!!!!!!!!!!!!!!!!!!!!!!
-!!!!! DO NOT USE !!!!!
-!!!!!!!!!!!!!!!!!!!!!!
-
-This package contains code that is shared between various dune-xxx
-packages. However, it is not meant for public consumption and provides
-no stability guarantee.
-"""
-maintainer: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-license: "MIT"
-homepage: "https://github.com/ocaml/dune"
-doc: "https://dune.readthedocs.io/"
-bug-reports: "https://github.com/ocaml/dune/issues"
-depends: [
-  "dune" {>= "2.3"}
-  "ocaml" {>= "4.07"}
-]
-dev-repo: "git+https://github.com/ocaml/dune.git"
-build: [
-  ["dune" "subst"] {pinned}
-  [
-    "dune"
-    "build"
-    "-p"
-    name
-    "-j"
-    jobs
-    "@install"
-    "@doc" {with-doc}
-  ]
-]
-url {
-  src: "https://github.com/ocaml/dune/releases/download/2.3.1/dune-2.3.1.tbz"
-  checksum: [
-    "sha256=b2b3dd9cdfd34ef8c4583ea8c52c3503c2395bf94c264af19d6450547e12f5cb"
-    "sha512=023fe4ddf743b8de24de0d7d2e6d5d0f85e459c5044aa4ba3de02cf63113d54d79004cc8ea8f7a958b324e9cbeef0845ec6a0f65454bc6a2e635e8944d28a0f9"
-  ]
-}
diff --git a/esy.lock/opam/dune.2.3.1/opam b/esy.lock/opam/dune.2.3.1/opam
deleted file mode 100644
index 5155cba..0000000
--- a/esy.lock/opam/dune.2.3.1/opam
+++ /dev/null
@@ -1,54 +0,0 @@
-opam-version: "2.0"
-synopsis: "Fast, portable, and opinionated build system"
-description: """
-
-dune is a build system that was designed to simplify the release of
-Jane Street packages. It reads metadata from "dune" files following a
-very simple s-expression syntax.
-
-dune is fast, has very low-overhead, and supports parallel builds on
-all platforms. It has no system dependencies; all you need to build
-dune or packages using dune is OCaml. You don't need make or bash
-as long as the packages themselves don't use bash explicitly.
-
-dune supports multi-package development by simply dropping multiple
-repositories into the same directory.
-
-It also supports multi-context builds, such as building against
-several opam roots/switches simultaneously. This helps maintaining
-packages across several versions of OCaml and gives cross-compilation
-for free.
-"""
-maintainer: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-license: "MIT"
-homepage: "https://github.com/ocaml/dune"
-doc: "https://dune.readthedocs.io/"
-bug-reports: "https://github.com/ocaml/dune/issues"
-conflicts: [
-  "dune-configurator" {< "2.3.0"}
-  "odoc" {< "1.3.0"}
-  "dune-release" {< "1.3.0"}
-  "jbuilder" {= "transition"}
-]
-dev-repo: "git+https://github.com/ocaml/dune.git"
-build: [
-  # opam 2 sets OPAM_SWITCH_PREFIX, so we don't need a hardcoded path
-  ["ocaml" "configure.ml" "--libdir" lib] {opam-version < "2"}
-  ["ocaml" "bootstrap.ml" "-j" jobs]
-  ["./dune.exe" "build" "-p" name "--profile" "dune-bootstrap" "-j" jobs]
-]
-depends: [
-  # Please keep the lower bound in sync with .travis.yml, dune-project
-  # and min_ocaml_version in bootstrap.ml
-  ("ocaml" {>= "4.07"} | ("ocaml" {< "4.07~~"} & "ocamlfind-secondary"))
-  "base-unix"
-  "base-threads"
-]
-url {
-  src: "https://github.com/ocaml/dune/releases/download/2.3.1/dune-2.3.1.tbz"
-  checksum: [
-    "sha256=b2b3dd9cdfd34ef8c4583ea8c52c3503c2395bf94c264af19d6450547e12f5cb"
-    "sha512=023fe4ddf743b8de24de0d7d2e6d5d0f85e459c5044aa4ba3de02cf63113d54d79004cc8ea8f7a958b324e9cbeef0845ec6a0f65454bc6a2e635e8944d28a0f9"
-  ]
-}
diff --git a/esy.lock/opam/easy-format.1.3.2/opam b/esy.lock/opam/easy-format.1.3.2/opam
deleted file mode 100644
index 138d0fb..0000000
--- a/esy.lock/opam/easy-format.1.3.2/opam
+++ /dev/null
@@ -1,46 +0,0 @@
-opam-version: "2.0"
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-  ["dune" "build" "-p" name "@doc"] {with-doc}
-]
-maintainer: ["martin@mjambon.com" "rudi.grinberg@gmail.com"]
-authors: ["Martin Jambon"]
-bug-reports: "https://github.com/mjambon/easy-format/issues"
-homepage: "https://github.com/mjambon/easy-format"
-doc: "https://mjambon.github.io/easy-format/"
-license: "BSD-3-Clause"
-dev-repo: "git+https://github.com/mjambon/easy-format.git"
-synopsis:
-  "High-level and functional interface to the Format module of the OCaml standard library"
-description: """
-
-This module offers a high-level and functional interface to the Format module of
-the OCaml standard library. It is a pretty-printing facility, i.e. it takes as
-input some code represented as a tree and formats this code into the most
-visually satisfying result, breaking and indenting lines of code where
-appropriate.
-
-Input data must be first modelled and converted into a tree using 3 kinds of
-nodes:
-
-* atoms
-* lists
-* labelled nodes
-
-Atoms represent any text that is guaranteed to be printed as-is. Lists can model
-any sequence of items such as arrays of data or lists of definitions that are
-labelled with something like "int main", "let x =" or "x:"."""
-depends: [
-  "dune" {>= "1.10"}
-  "ocaml" {>= "4.02.3"}
-]
-url {
-  src:
-    "https://github.com/mjambon/easy-format/releases/download/1.3.2/easy-format-1.3.2.tbz"
-  checksum: [
-    "sha256=3440c2b882d537ae5e9011eb06abb53f5667e651ea4bb3b460ea8230fa8c1926"
-    "sha512=e39377a2ff020ceb9ac29e8515a89d9bdbc91dfcfa871c4e3baafa56753fac2896768e5d9822a050dc1e2ade43c8967afb69391a386c0a8ecd4e1f774e236135"
-  ]
-}
diff --git a/esy.lock/opam/fieldslib.v0.13.0/opam b/esy.lock/opam/fieldslib.v0.13.0/opam
deleted file mode 100644
index ce47ec2..0000000
--- a/esy.lock/opam/fieldslib.v0.13.0/opam
+++ /dev/null
@@ -1,27 +0,0 @@
-opam-version: "2.0"
-maintainer: "opensource@janestreet.com"
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-homepage: "https://github.com/janestreet/fieldslib"
-bug-reports: "https://github.com/janestreet/fieldslib/issues"
-dev-repo: "git+https://github.com/janestreet/fieldslib.git"
-doc: "https://ocaml.janestreet.com/ocaml-core/latest/doc/fieldslib/index.html"
-license: "MIT"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml" {>= "4.04.2"}
-  "base"  {>= "v0.13" & < "v0.14"}
-  "dune"  {>= "1.5.1"}
-]
-synopsis: "Syntax extension to define first class values representing record fields, to get and set record fields, iterate and fold over all fields of a record and create new record values"
-description: "
-Part of Jane Street's Core library
-The Core suite of libraries is an industrial strength alternative to
-OCaml's standard library that was developed by Jane Street, the
-largest industrial user of OCaml.
-"
-url {
-  src: "https://ocaml.janestreet.com/ocaml-core/v0.13/files/fieldslib-v0.13.0.tar.gz"
-  checksum: "md5=3ac72dc49e43416c8b6fa0897bd4838b"
-}
diff --git a/esy.lock/opam/fmt.0.8.8/opam b/esy.lock/opam/fmt.0.8.8/opam
deleted file mode 100644
index f493b5f..0000000
--- a/esy.lock/opam/fmt.0.8.8/opam
+++ /dev/null
@@ -1,44 +0,0 @@
-opam-version: "2.0"
-maintainer: "Daniel Bünzli <daniel.buenzl i@erratique.ch>"
-authors: [ "The fmt programmers" ]
-homepage: "https://erratique.ch/software/fmt"
-doc: "https://erratique.ch/software/fmt"
-dev-repo: "git+https://erratique.ch/repos/fmt.git"
-bug-reports: "https://github.com/dbuenzli/fmt/issues"
-tags: [ "string" "format" "pretty-print" "org:erratique" ]
-license: "ISC"
-depends: [
-  "ocaml" {>= "4.05.0"}
-  "ocamlfind" {build}
-  "ocamlbuild" {build}
-  "topkg" {build & >= "0.9.0"}
-  # Can be removed once ocaml >= 4.07
-  "seq"
-  "stdlib-shims"
-]
-depopts: [ "base-unix" "cmdliner" ]
-conflicts: [ "cmdliner" {< "0.9.8"} ]
-build: [[
-  "ocaml" "pkg/pkg.ml" "build"
-          "--dev-pkg" "%{pinned}%"
-          "--with-base-unix" "%{base-unix:installed}%"
-          "--with-cmdliner" "%{cmdliner:installed}%" ]]
-
-synopsis: """OCaml Format pretty-printer combinators"""
-description: """\
-
-Fmt exposes combinators to devise `Format` pretty-printing functions.
-
-Fmt depends only on the OCaml standard library. The optional `Fmt_tty`
-library that allows to setup formatters for terminal color output
-depends on the Unix library. The optional `Fmt_cli` library that
-provides command line support for Fmt depends on [`Cmdliner`][cmdliner].
-
-Fmt is distributed under the ISC license.
-
-[cmdliner]: http://erratique.ch/software/cmdliner
-"""
-url {
-archive: "https://erratique.ch/software/fmt/releases/fmt-0.8.8.tbz"
-checksum: "473490fcfdf3ff0a8ccee226b873d4b2"
-}
diff --git a/esy.lock/opam/gmap.0.3.0/opam b/esy.lock/opam/gmap.0.3.0/opam
deleted file mode 100644
index 29a684e..0000000
--- a/esy.lock/opam/gmap.0.3.0/opam
+++ /dev/null
@@ -1,36 +0,0 @@
-opam-version: "2.0"
-maintainer: "Hannes Mehnert <hannes@mehnert.org>"
-authors: "Hannes Mehnert <hannes@mehnert.org>"
-license: "ISC"
-homepage: "https://github.com/hannesm/gmap"
-doc: "https://hannesm.github.io/gmap/doc"
-bug-reports: "https://github.com/hannesm/gmap/issues"
-depends: [
-  "ocaml" {>= "4.04.2"}
-  "dune"
-  "alcotest" {with-test}
-  "fmt" {with-test}
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-dev-repo: "git+https://github.com/hannesm/gmap.git"
-synopsis: "Heterogenous maps over a GADT"
-description: """
-Gmap exposes the functor `Make` which takes a key type (a
-[GADT](https://en.wikipedia.org/wiki/Generalized_algebraic_data_type) 'a key)
-and outputs a type-safe Map where each 'a key is associated with a 'a value.
-This removes the need for additional packing.  It uses OCaml's stdlib
-[Map](http://caml.inria.fr/pub/docs/manual-ocaml/libref/Map.html) data
-structure.
-"""
-url {
-  src:
-    "https://github.com/hannesm/gmap/releases/download/0.3.0/gmap-0.3.0.tbz"
-  checksum: [
-    "sha256=04dd9e6226ac8f8fb4ccb6021048702e34a482fb9c1d240d3852829529507c1c"
-    "sha512=71616981f5a15d6b2a47e18702083e52e81f6547076085b1489f676f50b0cc47c7c2c4fa19cb581e2878dc3d4f7133d0c50d8b51a8390be0e6e30318907d81d3"
-  ]
-}
diff --git a/esy.lock/opam/ipaddr-sexp.4.0.0/opam b/esy.lock/opam/ipaddr-sexp.4.0.0/opam
deleted file mode 100644
index 2dbcd25..0000000
--- a/esy.lock/opam/ipaddr-sexp.4.0.0/opam
+++ /dev/null
@@ -1,35 +0,0 @@
-opam-version: "2.0"
-maintainer: "anil@recoil.org"
-authors: ["David Sheets" "Anil Madhavapeddy" "Hugo Heuzard"]
-synopsis: "A library for manipulation of IP address representations usnig sexp"
-description: """
-Sexp convertions for ipaddr
-"""
-
-license: "ISC"
-tags: ["org:mirage" "org:xapi-project"]
-homepage: "https://github.com/mirage/ocaml-ipaddr"
-doc: "https://mirage.github.io/ocaml-ipaddr/"
-bug-reports: "https://github.com/mirage/ocaml-ipaddr/issues"
-depends: [
-  "ocaml" {>= "4.04.0"}
-  "dune" {>="1.9.0"}
-  "ipaddr" {=version}
-  "ipaddr-cstruct" {with-test & =version}
-  "ounit" {with-test}
-  "ppx_sexp_conv" {>= "v0.9.0" & < "v0.14"}
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-dev-repo: "git+https://github.com/mirage/ocaml-ipaddr.git"
-url {
-  src:
-    "https://github.com/mirage/ocaml-ipaddr/releases/download/v4.0.0/ipaddr-v4.0.0.tbz"
-  checksum: [
-    "sha256=6f4abf9c210b20ccddf4610691a87b8c870790d8f71d4a7edcfca9e21b59fc29"
-    "sha512=ca55a8cfa8b84c0a2f4e1fe7afb4c582066bbb562efb94169c0347e441ce076dc426d191772edb869eca6bd77f42f7141378181057ad8886da25ef915a9ee57f"
-  ]
-}
diff --git a/esy.lock/opam/ipaddr.4.0.0/opam b/esy.lock/opam/ipaddr.4.0.0/opam
deleted file mode 100644
index d724296..0000000
--- a/esy.lock/opam/ipaddr.4.0.0/opam
+++ /dev/null
@@ -1,51 +0,0 @@
-opam-version: "2.0"
-maintainer: "anil@recoil.org"
-authors: ["David Sheets" "Anil Madhavapeddy" "Hugo Heuzard"]
-synopsis: "A library for manipulation of IP (and MAC) address representations"
-description: """
-Features:
- * Depends only on sexplib (conditionalization under consideration)
- * oUnit-based tests
- * IPv4 and IPv6 support
- * IPv4 and IPv6 CIDR prefix support
- * IPv4 and IPv6 [CIDR-scoped address](http://tools.ietf.org/html/rfc4291#section-2.3) support
- * `Ipaddr.V4` and `Ipaddr.V4.Prefix` modules are `Map.OrderedType`
- * `Ipaddr.V6` and `Ipaddr.V6.Prefix` modules are `Map.OrderedType`
- * `Ipaddr` and `Ipaddr.Prefix` modules are `Map.OrderedType`
- * `Ipaddr_unix` in findlib subpackage `ipaddr.unix` provides compatibility with the standard library `Unix` module
- * `Ipaddr_top` in findlib subpackage `ipaddr.top` provides top-level pretty printers (requires compiler-libs default since OCaml 4.0)
- * IP address scope classification
- * IPv4-mapped addresses in IPv6 (::ffff:0:0/96) are an embedding of IPv4
- * MAC-48 (Ethernet) address support
- * `Macaddr` is a `Map.OrderedType`
- * All types have sexplib serializers/deserializers
-"""
-
-license: "ISC"
-tags: ["org:mirage" "org:xapi-project"]
-homepage: "https://github.com/mirage/ocaml-ipaddr"
-doc: "https://mirage.github.io/ocaml-ipaddr/"
-bug-reports: "https://github.com/mirage/ocaml-ipaddr/issues"
-depends: [
-  "ocaml" {>= "4.04.0"}
-  "dune" {>="1.9.0"}
-  "macaddr" {=version}
-  "sexplib0" {< "v0.14"}
-  "domain-name" {>= "0.3.0"}
-  "ounit" {with-test}
-  "ppx_sexp_conv" {with-test & >= "v0.9.0" & < "v0.14"}
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-dev-repo: "git+https://github.com/mirage/ocaml-ipaddr.git"
-url {
-  src:
-    "https://github.com/mirage/ocaml-ipaddr/releases/download/v4.0.0/ipaddr-v4.0.0.tbz"
-  checksum: [
-    "sha256=6f4abf9c210b20ccddf4610691a87b8c870790d8f71d4a7edcfca9e21b59fc29"
-    "sha512=ca55a8cfa8b84c0a2f4e1fe7afb4c582066bbb562efb94169c0347e441ce076dc426d191772edb869eca6bd77f42f7141378181057ad8886da25ef915a9ee57f"
-  ]
-}
diff --git a/esy.lock/opam/jbuilder.1.0+beta20.2/opam b/esy.lock/opam/jbuilder.1.0+beta20.2/opam
deleted file mode 100644
index 2e411c9..0000000
--- a/esy.lock/opam/jbuilder.1.0+beta20.2/opam
+++ /dev/null
@@ -1,39 +0,0 @@
-opam-version: "2.0"
-maintainer: "opensource@janestreet.com"
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-homepage: "https://github.com/ocaml/dune"
-bug-reports: "https://github.com/ocaml/dune/issues"
-dev-repo: "git+https://github.com/ocaml/dune.git"
-license: "Apache-2.0"
-build: [
-  ["ocaml" "configure.ml" "--libdir" lib]
-  ["ocaml" "bootstrap.ml"]
-  ["./boot.exe" "--subst"] {pinned}
-  ["./boot.exe" "-j" jobs]
-]
-synopsis: "Fast, portable and opinionated build system"
-description: """
-jbuilder is a build system that was designed to simplify the release
-of Jane Street packages. It reads metadata from "jbuild" files
-following a very simple s-expression syntax.
-
-jbuilder is fast, it has very low-overhead and support parallel builds
-on all platforms. It has no system dependencies, all you need to build
-jbuilder and packages using jbuilder is OCaml. You don't need or make
-or bash as long as the packages themselves don't use bash explicitely.
-
-jbuilder supports multi-package development by simply dropping multiple
-repositories into the same directory.
-
-It also supports multi-context builds, such as building against
-several opam roots/switches simultaneously. This helps maintaining
-packages across several versions of OCaml and gives cross-compilation
-for free."""
-depends: [
-  "ocaml" {>= "4.02.3"}
-]
-url {
-  src:
-    "https://github.com/ocaml/dune/releases/download/1.0%2Bbeta20.2/jbuilder-1.0+beta20.2.tbz"
-  checksum: "md5=fbe8c3b1facb206cac3fb8932b5dd5d9"
-}
diff --git a/esy.lock/opam/jsonm.1.0.1/opam b/esy.lock/opam/jsonm.1.0.1/opam
deleted file mode 100644
index 642c344..0000000
--- a/esy.lock/opam/jsonm.1.0.1/opam
+++ /dev/null
@@ -1,37 +0,0 @@
-opam-version: "2.0"
-maintainer: "Daniel Bünzli <daniel.buenzl i@erratique.ch>"
-authors: ["Daniel Bünzli <daniel.buenzl i@erratique.ch>"]
-homepage: "http://erratique.ch/software/jsonm"
-doc: "http://erratique.ch/software/jsonm/doc/Jsonm"
-dev-repo: "git+http://erratique.ch/repos/jsonm.git"
-bug-reports: "https://github.com/dbuenzli/jsonm/issues"
-tags: [ "json" "codec" "org:erratique" ]
-license: "ISC"
-depends: [
-  "ocaml" {>= "4.01.0"}
-  "ocamlfind" {build}
-  "ocamlbuild" {build}
-  "topkg" {build}
-  "uchar"
-  "uutf" {>= "1.0.0"}
-]
-build:[[
-  "ocaml" "pkg/pkg.ml" "build"
-          "--pinned" "%{pinned}%" ]]
-synopsis: "Non-blocking streaming JSON codec for OCaml"
-description: """
-Jsonm is a non-blocking streaming codec to decode and encode the JSON
-data format. It can process JSON text without blocking on IO and
-without a complete in-memory representation of the data.
-
-The alternative "uncut" codec also processes whitespace and
-(non-standard) JSON with JavaScript comments.
-
-Jsonm is made of a single module and depends on [Uutf][uutf]. It is distributed
-under the ISC license.
-
-[uutf]: http://erratique.ch/software/uutf"""
-url {
-  src: "http://erratique.ch/software/jsonm/releases/jsonm-1.0.1.tbz"
-  checksum: "md5=e2ca39eaefd55b8d155c4f1ec5885311"
-}
diff --git a/esy.lock/opam/junit.2.0.2/opam b/esy.lock/opam/junit.2.0.2/opam
deleted file mode 100644
index 874cf38..0000000
--- a/esy.lock/opam/junit.2.0.2/opam
+++ /dev/null
@@ -1,32 +0,0 @@
-opam-version: "2.0"
-maintainer: "Louis Roché <louis@louisroche.net>"
-authors: "Louis Roché <louis@louisroche.net>"
-homepage: "https://github.com/Khady/ocaml-junit"
-bug-reports: "https://github.com/Khady/ocaml-junit/issues"
-license: "LGPLv3+ with OCaml linking exception"
-dev-repo: "git+https://github.com/Khady/ocaml-junit.git"
-doc: "https://khady.github.io/ocaml-junit/"
-tags: ["junit" "jenkins"]
-depends: [
-  "dune" {>= "1.0"}
-  "ptime"
-  "tyxml" {>= "4.0.0"}
-  "odoc" {with-doc & >= "1.1.1"}
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-  ["dune" "build" "-p" name "-j" jobs] {with-doc}
-]
-name: "junit"
-synopsis: "JUnit XML reports generation library"
-description: "JUnit XML reports generation library"
-url {
-  src:
-    "https://github.com/Khady/ocaml-junit/releases/download/2.0.2/junit-2.0.2.tbz"
-  checksum: [
-    "sha256=fda941b653613a4a5731f9b3557364b12baa341daa13c01676c9eb8d64e96b01"
-    "sha512=5a9fa803c4861748bb8482fc51197420bf3cc3b9540989a489c4ffb65fdd02386aaa60437eae29182209dae0903b0e537c095249e19d395a451b8e8214f15f03"
-  ]
-}
diff --git a/esy.lock/opam/lambdasoup.0.7.0/opam b/esy.lock/opam/lambdasoup.0.7.0/opam
deleted file mode 100644
index 31ea2a9..0000000
--- a/esy.lock/opam/lambdasoup.0.7.0/opam
+++ /dev/null
@@ -1,46 +0,0 @@
-opam-version: "2.0"
-
-synopsis: "Easy functional HTML scraping and manipulation with CSS selectors"
-
-version: "0.7.0"
-license: "MIT"
-homepage: "https://github.com/aantron/lambdasoup"
-doc: "https://aantron.github.io/lambdasoup"
-bug-reports: "https://github.com/aantron/lambdasoup/issues"
-
-authors: "Anton Bachin <antonbachin@yahoo.com>"
-maintainer: "Anton Bachin <antonbachin@yahoo.com>"
-dev-repo: "git+https://github.com/aantron/lambdasoup.git"
-
-depends: [
-  # As a consequence of depending on Dune, Lambda Soup requires OCaml 4.02.3.
-  "dune"
-  "markup" {>= "0.7.1"}
-  "ocaml" {>= "4.02.0"}
-
-  "bisect_ppx" {dev & >= "2.0.0"}
-  "ounit" {with-test}
-]
-
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-
-description: """
-Lambda Soup is an HTML scraping library inspired by Python's Beautiful Soup. It
-provides lazy traversals from HTML nodes to their parents, children, siblings,
-etc., and to nodes matching CSS selectors. The traversals can be manipulated
-using standard functional combinators such as fold, filter, and map.
-
-The DOM tree is mutable. You can use Lambda Soup for automatic HTML rewriting in
-scripts. Lambda Soup rewrites its own ocamldoc page this way.
-
-A major goal of Lambda Soup is to be easy to use, including in interactive
-sessions, and to have a minimal learning curve. It is a very simple library.
-"""
-
-url {
-  src: "https://github.com/aantron/lambdasoup/archive/0.7.0.tar.gz"
-  checksum: "md5=2bb2c7d8a6ac4e12aa7dbdfcbaac0dd8"
-}
diff --git a/esy.lock/opam/logs.0.7.0/opam b/esy.lock/opam/logs.0.7.0/opam
deleted file mode 100644
index e69bb7f..0000000
--- a/esy.lock/opam/logs.0.7.0/opam
+++ /dev/null
@@ -1,64 +0,0 @@
-opam-version: "2.0"
-maintainer: "Daniel Bünzli <daniel.buenzl i@erratique.ch>"
-authors: ["The logs programmers"]
-homepage: "https://erratique.ch/software/logs"
-doc: "https://erratique.ch/software/logs/doc"
-dev-repo: "git+https://erratique.ch/repos/logs.git"
-bug-reports: "https://github.com/dbuenzli/logs/issues"
-tags: [ "log" "system" "org:erratique" ]
-license: "ISC"
-depends: [
-  "ocaml" {>= "4.03.0"}
-  "ocamlfind" {build}
-  "ocamlbuild" {build}
-  "topkg" {build}
-  "mtime" {with-test} ]
-depopts: [
-  "js_of_ocaml"
-  "fmt"
-  "cmdliner"
-  "lwt"
-  "base-threads"
-]
-conflicts: [
-  "js_of_ocaml" { < "3.3.0" } ]
-
-build: [[
-  "ocaml" "pkg/pkg.ml" "build"
-          "--pinned" "%{pinned}%"
-          "--with-js_of_ocaml" "%{js_of_ocaml:installed}%"
-          "--with-fmt" "%{fmt:installed}%"
-          "--with-cmdliner" "%{cmdliner:installed}%"
-          "--with-lwt" "%{lwt:installed}%"
-          "--with-base-threads" "%{base-threads:installed}%"
-]]
-
-synopsis: """Logging infrastructure for OCaml"""
-description: """\
-
-Logs provides a logging infrastructure for OCaml. Logging is performed
-on sources whose reporting level can be set independently. Log message
-report is decoupled from logging and is handled by a reporter.
-
-A few optional log reporters are distributed with the base library and
-the API easily allows to implement your own.
-
-`Logs` has no dependencies. The optional `Logs_fmt` reporter on OCaml
-formatters depends on [Fmt][fmt].  The optional `Logs_browser`
-reporter that reports to the web browser console depends on
-[js_of_ocaml][jsoo]. The optional `Logs_cli` library that provides
-command line support for controlling Logs depends on
-[`Cmdliner`][cmdliner]. The optional `Logs_lwt` library that provides
-Lwt logging functions depends on [`Lwt`][lwt]
-
-Logs and its reporters are distributed under the ISC license.
-
-[fmt]: http://erratique.ch/software/fmt
-[jsoo]: http://ocsigen.org/js_of_ocaml/
-[cmdliner]: http://erratique.ch/software/cmdliner
-[lwt]: http://ocsigen.org/lwt/
-"""
-url {
-archive: "https://erratique.ch/software/logs/releases/logs-0.7.0.tbz"
-checksum: "2bf021ca13331775e33cf34ab60246f7"
-}
diff --git a/esy.lock/opam/lwt.5.1.2/opam b/esy.lock/opam/lwt.5.1.2/opam
deleted file mode 100644
index f9ef56a..0000000
--- a/esy.lock/opam/lwt.5.1.2/opam
+++ /dev/null
@@ -1,62 +0,0 @@
-opam-version: "2.0"
-
-synopsis: "Promises and event-driven I/O"
-
-version: "5.1.2"
-license: "MIT"
-homepage: "https://github.com/ocsigen/lwt"
-doc: "https://ocsigen.org/lwt"
-bug-reports: "https://github.com/ocsigen/lwt/issues"
-
-authors: [
-  "Jérôme Vouillon"
-  "Jérémie Dimino"
-]
-maintainer: [
-  "Anton Bachin <antonbachin@yahoo.com>"
-]
-dev-repo: "git+https://github.com/ocsigen/lwt.git"
-
-depends: [
-  "cppo" {build & >= "1.1.0"}
-  "dune" {>= "1.7.0"}
-  "dune-configurator"
-  "mmap" {>= "1.1.0"} # mmap is needed as long as Lwt supports OCaml < 4.06.0.
-  "ocaml" {>= "4.02.0"}
-  "ocplib-endian"
-  "result" # result is needed as long as Lwt supports OCaml 4.02.
-  "seq" # seq is needed as long as Lwt supports OCaml < 4.07.0.
-
-  "bisect_ppx" {dev & >= "1.3.0"}
-  "ocamlfind" {dev & >= "1.7.3-1"}
-]
-
-depopts: [
-  "base-threads"
-  "base-unix"
-  "conf-libev"
-]
-
-conflicts: [
-  "ocaml-variants" {= "4.02.1+BER"}
-]
-
-build: [
-  ["dune" "exec" "src/unix/config/discover.exe" "--root" "." "--" "--save"
-    "--use-libev" "%{conf-libev:installed}%"]
-  ["dune" "build" "-p" name "-j" jobs]
-]
-
-description: "A promise is a value that may become determined in the future.
-
-Lwt provides typed, composable promises. Promises that are resolved by I/O are
-resolved by Lwt in parallel.
-
-Meanwhile, OCaml code, including code creating and waiting on promises, runs in
-a single thread by default. This reduces the need for locks or other
-synchronization primitives. Code can be run in parallel on an opt-in basis."
-
-url {
-  src: "https://github.com/ocsigen/lwt/archive/5.1.2.tar.gz"
-  checksum: "md5=dc4005582a6ab32227f5ff90cb480dbe"
-}
diff --git a/esy.lock/opam/lwt_ppx.2.0.0/opam b/esy.lock/opam/lwt_ppx.2.0.0/opam
deleted file mode 100644
index 77071eb..0000000
--- a/esy.lock/opam/lwt_ppx.2.0.0/opam
+++ /dev/null
@@ -1,34 +0,0 @@
-opam-version: "2.0"
-
-synopsis: "PPX syntax for Lwt, providing something similar to async/await from JavaScript"
-
-version: "2.0.0"
-license: "MIT"
-homepage: "https://github.com/ocsigen/lwt"
-doc: "https://ocsigen.org/lwt/api/Ppx_lwt"
-bug-reports: "https://github.com/ocsigen/lwt/issues"
-
-authors: [
-  "Gabriel Radanne"
-]
-maintainer: [
-  "Anton Bachin <antonbachin@yahoo.com>"
-]
-dev-repo: "git+https://github.com/ocsigen/lwt.git"
-
-depends: [
-  "dune" {>= "1.1"}
-  "lwt"
-  "ocaml" {>= "4.02.0"}
-  "ocaml-migrate-parsetree" {>= "1.4.0"}
-  "ppx_tools_versioned" {>= "5.2.3"}
-]
-
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-
-url {
-  src: "https://github.com/ocsigen/lwt/archive/5.0.0.tar.gz"
-  checksum: "md5=a4ffc0e3aa692d2e7d800f4cf2dd3db0"
-}
diff --git a/esy.lock/opam/macaddr.4.0.0/opam b/esy.lock/opam/macaddr.4.0.0/opam
deleted file mode 100644
index a94f9e0..0000000
--- a/esy.lock/opam/macaddr.4.0.0/opam
+++ /dev/null
@@ -1,40 +0,0 @@
-opam-version: "2.0"
-maintainer: "anil@recoil.org"
-authors: ["David Sheets" "Anil Madhavapeddy" "Hugo Heuzard"]
-synopsis: "A library for manipulation of MAC address representations"
-license: "ISC"
-tags: ["org:mirage" "org:xapi-project"]
-homepage: "https://github.com/mirage/ocaml-ipaddr"
-doc: "https://mirage.github.io/ocaml-ipaddr/"
-bug-reports: "https://github.com/mirage/ocaml-ipaddr/issues"
-depends: [
-  "ocaml" {>= "4.04.0"}
-  "dune" {>="1.9.0"}
-  "ounit" {with-test}
-  "ppx_sexp_conv" {with-test & >= "v0.9.0" & < "v0.14"}
-]
-conflicts: [ "ipaddr" {< "3.0.0"} ]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-dev-repo: "git+https://github.com/mirage/ocaml-ipaddr.git"
-description: """
-A library for manipulation of MAC address representations.
-
-Features:
-
- * oUnit-based tests
- * MAC-48 (Ethernet) address support
- * `Macaddr` is a `Map.OrderedType`
- * All types have sexplib serializers/deserializers optionally via the `Macaddr_sexp` library.
- """
-url {
-  src:
-    "https://github.com/mirage/ocaml-ipaddr/releases/download/v4.0.0/ipaddr-v4.0.0.tbz"
-  checksum: [
-    "sha256=6f4abf9c210b20ccddf4610691a87b8c870790d8f71d4a7edcfca9e21b59fc29"
-    "sha512=ca55a8cfa8b84c0a2f4e1fe7afb4c582066bbb562efb94169c0347e441ce076dc426d191772edb869eca6bd77f42f7141378181057ad8886da25ef915a9ee57f"
-  ]
-}
diff --git a/esy.lock/opam/magic-mime.1.1.2/opam b/esy.lock/opam/magic-mime.1.1.2/opam
deleted file mode 100644
index 8e398fb..0000000
--- a/esy.lock/opam/magic-mime.1.1.2/opam
+++ /dev/null
@@ -1,41 +0,0 @@
-opam-version: "2.0"
-name: "magic-mime"
-synopsis: "Map filenames to common MIME types"
-description: """
-This library contains a database of MIME types that maps filename extensions
-into MIME types suitable for use in many Internet protocols such as HTTP or
-e-mail.  It is generated from the `mime.types` file found in Unix systems, but
-has no dependency on a filesystem since it includes the contents of the
-database as an ML datastructure.
-
-For example, here's how to lookup MIME types in the [utop] REPL:
-
-    #require "magic-mime";;
-    Magic_mime.lookup "/foo/bar.txt";;
-    - : bytes = "text/plain"
-    Magic_mime.lookup "bar.css";;
-    - : bytes = "text/css"
-"""
-maintainer: "Anil Madhavapeddy <anil@recoil.org>"
-authors: ["Anil Madhavapeddy" "Maxence Guesdon"]
-license: "ISC"
-homepage: "https://github.com/mirage/ocaml-magic-mime"
-doc: "https://mirage.github.io/ocaml-magic-mime/"
-bug-reports: "https://github.com/mirage/ocaml-magic-mime/issues"
-dev-repo: "git+https://github.com/mirage/ocaml-magic-mime.git"
-depends: [
-  "ocaml" {>= "4.03.0"}
-  "dune"
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-]
-url {
-  src:
-    "https://github.com/mirage/ocaml-magic-mime/releases/download/v1.1.2/magic-mime-v1.1.2.tbz"
-  checksum: [
-    "sha256=0c590bbc747531b56d392ee8f063d879df1e2026ba2dfa2d1bc98c9a9acb04eb"
-    "sha512=8264db78adc2c75b8adabc23c26ad34eab98383bd3a8f2068f2236ff3425d653c0238fbd7361e55a3d70d843413ef8671b6e97293074b4d3a1e300628d5292ab"
-  ]
-}
diff --git a/esy.lock/opam/markup.0.8.2/opam b/esy.lock/opam/markup.0.8.2/opam
deleted file mode 100644
index a1b3a60..0000000
--- a/esy.lock/opam/markup.0.8.2/opam
+++ /dev/null
@@ -1,53 +0,0 @@
-opam-version: "2.0"
-
-synopsis: "Error-recovering functional HTML5 and XML parsers and writers"
-
-version: "0.8.2"
-license: "MIT"
-homepage: "https://github.com/aantron/markup.ml"
-doc: "http://aantron.github.io/markup.ml"
-bug-reports: "https://github.com/aantron/markup.ml/issues"
-
-authors: "Anton Bachin <antonbachin@yahoo.com>"
-maintainer: "Anton Bachin <antonbachin@yahoo.com>"
-dev-repo: "git+https://github.com/aantron/markup.ml.git"
-
-depends: [
-  "dune"
-  "ocaml" {>= "4.02.0"}
-  "uchar"
-  "uutf" {>= "1.0.0"}
-
-  "bisect_ppx" {dev & >= "2.0.0"}
-  "ounit" {dev}
-]
-# Markup.ml implicitly requires OCaml 4.02.3, as this is a contraint of Dune.
-
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-
-description: """
-Markup.ml provides an HTML parser and an XML parser. The parsers are wrapped in
-a simple interface: they are functions that transform byte streams to parsing
-signal streams. Streams can be manipulated in various ways, such as processing
-by fold, filter, and map, assembly into DOM tree structures, or serialization
-back to HTML or XML.
-
-Both parsers are based on their respective standards. The HTML parser, in
-particular, is based on the state machines defined in HTML5.
-
-The parsers are error-recovering by default, and accept fragments. This makes it
-very easy to get a best-effort parse of some input. The parsers can, however, be
-easily configured to be strict, and to accept only full documents.
-
-Apart from this, the parsers are streaming (do not build up a document in
-memory), non-blocking (can be used with threading libraries), lazy (do not
-consume input unless the signal stream is being read), and process the input in
-a single pass. They automatically detect the character encoding of the input
-stream, and convert everything to UTF-8."""
-
-url {
-  src: "https://github.com/aantron/markup.ml/archive/0.8.2.tar.gz"
-  checksum: "md5=0fe6b3a04d941ca40a5efdd082f1183d"
-}
diff --git a/esy.lock/opam/menhir.20200211/opam b/esy.lock/opam/menhir.20200211/opam
deleted file mode 100644
index f1f18fc..0000000
--- a/esy.lock/opam/menhir.20200211/opam
+++ /dev/null
@@ -1,27 +0,0 @@
-opam-version: "2.0"
-maintainer: "francois.pottier@inria.fr"
-authors: [
-  "François Pottier <francois.pottier@inria.fr>"
-  "Yann Régis-Gianas <yrg@pps.univ-paris-diderot.fr>"
-]
-homepage: "http://gitlab.inria.fr/fpottier/menhir"
-dev-repo: "git+https://gitlab.inria.fr/fpottier/menhir.git"
-bug-reports: "menhir@inria.fr"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml" {>= "4.02.3"}
-  "dune" {>= "2.2.0"}
-  "menhirLib" {= version}
-  "menhirSdk" {= version}
-]
-synopsis: "An LR(1) parser generator"
-url {
-  src:
-    "https://gitlab.inria.fr/fpottier/menhir/repository/20200211/archive.tar.gz"
-  checksum: [
-    "md5=01577e5f15380c35bdaa8fd818204560"
-    "sha512=a686c4b047d5236c425afcd7f179964191268ff448b8d18510579d742a7256855049bc4fe568bb8f1b0d6cbfb758d95cd05e621e3410b75245bb799d623725d6"
-  ]
-}
diff --git a/esy.lock/opam/menhirLib.20200211/opam b/esy.lock/opam/menhirLib.20200211/opam
deleted file mode 100644
index 28d3e42..0000000
--- a/esy.lock/opam/menhirLib.20200211/opam
+++ /dev/null
@@ -1,25 +0,0 @@
-opam-version: "2.0"
-maintainer: "francois.pottier@inria.fr"
-authors: [
-  "François Pottier <francois.pottier@inria.fr>"
-  "Yann Régis-Gianas <yrg@pps.univ-paris-diderot.fr>"
-]
-homepage: "http://gitlab.inria.fr/fpottier/menhir"
-dev-repo: "git+https://gitlab.inria.fr/fpottier/menhir.git"
-bug-reports: "menhir@inria.fr"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml" {>= "4.02.3"}
-  "dune" {>= "2.0.0"}
-]
-synopsis: "Runtime support library for parsers generated by Menhir"
-url {
-  src:
-    "https://gitlab.inria.fr/fpottier/menhir/repository/20200211/archive.tar.gz"
-  checksum: [
-    "md5=01577e5f15380c35bdaa8fd818204560"
-    "sha512=a686c4b047d5236c425afcd7f179964191268ff448b8d18510579d742a7256855049bc4fe568bb8f1b0d6cbfb758d95cd05e621e3410b75245bb799d623725d6"
-  ]
-}
diff --git a/esy.lock/opam/menhirSdk.20200211/opam b/esy.lock/opam/menhirSdk.20200211/opam
deleted file mode 100644
index 524045e..0000000
--- a/esy.lock/opam/menhirSdk.20200211/opam
+++ /dev/null
@@ -1,25 +0,0 @@
-opam-version: "2.0"
-maintainer: "francois.pottier@inria.fr"
-authors: [
-  "François Pottier <francois.pottier@inria.fr>"
-  "Yann Régis-Gianas <yrg@pps.univ-paris-diderot.fr>"
-]
-homepage: "http://gitlab.inria.fr/fpottier/menhir"
-dev-repo: "git+https://gitlab.inria.fr/fpottier/menhir.git"
-bug-reports: "menhir@inria.fr"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml" {>= "4.02.3"}
-  "dune" {>= "2.0.0"}
-]
-synopsis: "Compile-time library for auxiliary tools related to Menhir"
-url {
-  src:
-    "https://gitlab.inria.fr/fpottier/menhir/repository/20200211/archive.tar.gz"
-  checksum: [
-    "md5=01577e5f15380c35bdaa8fd818204560"
-    "sha512=a686c4b047d5236c425afcd7f179964191268ff448b8d18510579d742a7256855049bc4fe568bb8f1b0d6cbfb758d95cd05e621e3410b75245bb799d623725d6"
-  ]
-}
diff --git a/esy.lock/opam/merlin-extend.0.5/opam b/esy.lock/opam/merlin-extend.0.5/opam
deleted file mode 100644
index a3ae0d3..0000000
--- a/esy.lock/opam/merlin-extend.0.5/opam
+++ /dev/null
@@ -1,29 +0,0 @@
-opam-version: "2.0"
-maintainer: "Frederic Bour <frederic.bour@lakaban.net>"
-authors: "Frederic Bour <frederic.bour@lakaban.net>"
-homepage: "https://github.com/let-def/merlin-extend"
-bug-reports: "https://github.com/let-def/merlin-extend"
-license: "MIT"
-dev-repo: "git+https://github.com/let-def/merlin-extend.git"
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "dune" {>= "1.0"}
-  "cppo" {build}
-  "ocaml" {>= "4.02.3"}
-]
-synopsis: "A protocol to provide custom frontend to Merlin"
-description: """
-This protocol allows to replace the OCaml frontend of Merlin.
-It extends what used to be done with the `-pp' flag to handle a few more cases."""
-doc: "https://let-def.github.io/merlin-extend"
-url {
-  src:
-    "https://github.com/let-def/merlin-extend/releases/download/v0.5/merlin-extend-v0.5.tbz"
-  checksum: [
-    "sha256=ca3a38c360c7d4827eb4789abf7a6aa4b6e3b4e3c3ef69a5be64dce4601ec227"
-    "sha512=55c5a3637337abb8ca8db679128a81ca8ccce567bc214d55b2e6444dc0e905b74c64d629bdea2457d0fe4be5306414feefcdbc4d4761fdafd59aa107550936b6"
-  ]
-}
diff --git a/esy.lock/opam/merlin.3.3.3/opam b/esy.lock/opam/merlin.3.3.3/opam
deleted file mode 100644
index f0db8e9..0000000
--- a/esy.lock/opam/merlin.3.3.3/opam
+++ /dev/null
@@ -1,71 +0,0 @@
-opam-version: "2.0"
-maintainer:   "defree@gmail.com"
-authors:      "The Merlin team"
-homepage:     "https://github.com/ocaml/merlin"
-bug-reports:  "https://github.com/ocaml/merlin/issues"
-dev-repo: "git+https://github.com/ocaml/merlin.git"
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-depends: [
-  "ocaml" {>= "4.02.1" & < "4.10"}
-  "dune" {>= "1.8.0"}
-  "ocamlfind" {>= "1.5.2"}
-  "yojson" {>= "1.6.0"}
-  "mdx" {with-test & >= "1.3.0"}
-  "conf-jq" {with-test}
-]
-synopsis:
-  "Editor helper, provides completion, typing and source browsing in Vim and Emacs"
-description:
-  "Merlin is an assistant for editing OCaml code. It aims to provide the features available in modern IDEs: error reporting, auto completion, source browsing and much more."
-post-messages: [
-  "merlin installed.
-
-Quick setup for VIM
--------------------
-Append this to your .vimrc to add merlin to vim's runtime-path:
-  let g:opamshare = substitute(system('opam config var share'),'\\n$','','''')
-  execute \"set rtp+=\" . g:opamshare . \"/merlin/vim\"
-
-Also run the following line in vim to index the documentation:
-  :execute \"helptags \" . g:opamshare . \"/merlin/vim/doc\"
-
-Quick setup for EMACS
--------------------
-Add opam emacs directory to your load-path by appending this to your .emacs:
-  (let ((opam-share (ignore-errors (car (process-lines \"opam\" \"config\" \"var\" \"share\")))))
-   (when (and opam-share (file-directory-p opam-share))
-    ;; Register Merlin
-    (add-to-list 'load-path (expand-file-name \"emacs/site-lisp\" opam-share))
-    (autoload 'merlin-mode \"merlin\" nil t nil)
-    ;; Automatically start it in OCaml buffers
-    (add-hook 'tuareg-mode-hook 'merlin-mode t)
-    (add-hook 'caml-mode-hook 'merlin-mode t)
-    ;; Use opam switch to lookup ocamlmerlin binary
-    (setq merlin-command 'opam)))
-
-Take a look at https://github.com/ocaml/merlin for more information
-
-Quick setup with opam-user-setup
---------------------------------
-
-Opam-user-setup support Merlin.
-
-  $ opam user-setup install
-
-should take care of basic setup.
-See https://github.com/OCamlPro/opam-user-setup
-"
-  {success & !user-setup:installed}
-]
-url {
-  src:
-    "https://github.com/ocaml/merlin/releases/download/v3.3.3/merlin-v3.3.3.tbz"
-  checksum: [
-    "sha256=72909ef47eea1f6fca13b4109a34dccf8fe3923a3c026f1ed1db9eb5ee9aae15"
-    "sha512=2a5f39d966be56c1322982effc05bc98fd5f66cd12f1f76953f8daa9eca74a58c92a186854f4e601e2f0bb038720691446e7591b4613982accded3e579fedb23"
-  ]
-}
diff --git a/esy.lock/opam/mirage-no-solo5.1/opam b/esy.lock/opam/mirage-no-solo5.1/opam
deleted file mode 100644
index f0fe26c..0000000
--- a/esy.lock/opam/mirage-no-solo5.1/opam
+++ /dev/null
@@ -1,8 +0,0 @@
-opam-version: "2.0"
-maintainer: "mirageos-devel@lists.xenproject.org"
-authors: ["mirageos-devel@lists.xenproject.org"]
-homepage: "https://mirage.io"
-license: "BSD-2-Clause"
-conflicts: [ "mirage-solo5" ]
-synopsis: "Virtual package conflicting with mirage-solo5"
-depends: ["ocaml"]
diff --git a/esy.lock/opam/mirage-no-xen.1/opam b/esy.lock/opam/mirage-no-xen.1/opam
deleted file mode 100644
index 39a9028..0000000
--- a/esy.lock/opam/mirage-no-xen.1/opam
+++ /dev/null
@@ -1,8 +0,0 @@
-opam-version: "2.0"
-maintainer: "mirageos-devel@lists.xenproject.org"
-authors: ["mirageos-devel@lists.xenproject.org"]
-homepage: "https://mirage.io"
-license: "BSD-2-Clause"
-conflicts: [ "mirage-xen" ]
-synopsis: "Virtual package conflicting with mirage-xen"
-depends: ["ocaml"]
diff --git a/esy.lock/opam/mmap.1.1.0/opam b/esy.lock/opam/mmap.1.1.0/opam
deleted file mode 100644
index 52d8ff0..0000000
--- a/esy.lock/opam/mmap.1.1.0/opam
+++ /dev/null
@@ -1,24 +0,0 @@
-opam-version: "2.0"
-maintainer: "jeremie@dimino.org"
-authors: ["Jérémie Dimino <jeremie@dimino.org>" "Anton Bachin" ]
-homepage: "https://github.com/mirage/mmap"
-bug-reports: "https://github.com/mirage/mmap/issues"
-doc: "https://mirage.github.io/mmap/"
-dev-repo: "git+https://github.com/mirage/mmap.git"
-license: "LGPL-2.1-only with OCaml-LGPL-linking-exception"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml"
-  "dune" {>= "1.6"}
-]
-synopsis: "File mapping functionality"
-description: """
-This project provides a Mmap.map_file functions for mapping files in memory.
-"""
-url {
-  src:
-    "https://github.com/mirage/mmap/releases/download/v1.1.0/mmap-v1.1.0.tbz"
-  checksum: "md5=8c5d5fbc537296dc525867535fb878ba"
-}
diff --git a/esy.lock/opam/nocrypto.0.5.4-2/files/0001-add-missing-runtime-dependencies-in-_tags.patch b/esy.lock/opam/nocrypto.0.5.4-2/files/0001-add-missing-runtime-dependencies-in-_tags.patch
deleted file mode 100644
index 1b3b972..0000000
--- a/esy.lock/opam/nocrypto.0.5.4-2/files/0001-add-missing-runtime-dependencies-in-_tags.patch
+++ /dev/null
@@ -1,47 +0,0 @@
-From 6f97531287a3e3ee749f2277248af28bdc85b8e4 Mon Sep 17 00:00:00 2001
-From: Gabriel Scherer <gabriel.scherer@gmail.com>
-Date: Mon, 26 Mar 2018 16:09:16 +0200
-Subject: [PATCH 1/4] add missing runtime dependencies in _tags
-
-Binaries in <bench/*>, <tests/*> depend on ppx_sexp_conv's runtime
-library within ppx_sexp_conv.
-
-The packed modules <src/nocrypto.cm{x,o}> also depend on the package
-ppx_sexp_conv: its presence at pack-creation time influences the
-generated .cmi interface, see
-
-  https://github.com/ocaml/opam-repository/pull/11628#issuecomment-375697444
-
-Note: the package ppx_sexp_conv.runtime-lib would suffice, but it is
-only available as such under recent ppx_sexp_conv versions, so its
-explicit use would make the build description (needlessly)
-incompatible with older ppx_sexp_conv versions.
----
- _tags | 5 +++--
- 1 file changed, 3 insertions(+), 2 deletions(-)
-
-diff --git a/_tags b/_tags
-index 6d4e7de..c2a6610 100644
---- a/_tags
-+++ b/_tags
-@@ -7,6 +7,7 @@ true: package(bytes), package(cstruct)
- <src/*.ml{,i}>: package(zarith), package(sexplib), package(ppx_sexp_conv)
- <src/*.cm{x,o}> and not <src/nocrypto.cmx>: for-pack(Nocrypto)
- <src/*.cm{,x}a>: link_stubs(src/libnocrypto_stubs)
-+<src/nocrypto.cm{x,o}>: package(ppx_sexp_conv)
- 
- <unix>: include
- <unix/*.ml{,i}>: package(unix), package(bytes)
-@@ -19,7 +20,7 @@ true: package(bytes), package(cstruct)
- 
- <**/*.c>: ccopt(--std=c99 -Wall -Wextra -O3)
- 
--<bench/*>: use_nocrypto, package(zarith), package(cstruct.unix)
--<tests/*>: use_nocrypto, package(zarith), package(oUnit)
-+<bench/*>: use_nocrypto, package(zarith), package(ppx_sexp_conv)
-+<tests/*>: use_nocrypto, package(zarith), package(ppx_sexp_conv), package(oUnit)
- 
- <rondom>: -traverse
--- 
-2.18.0
-
diff --git a/esy.lock/opam/nocrypto.0.5.4-2/files/0002-add-ppx_sexp_conv-as-a-runtime-dependency-in-the-pac.patch b/esy.lock/opam/nocrypto.0.5.4-2/files/0002-add-ppx_sexp_conv-as-a-runtime-dependency-in-the-pac.patch
deleted file mode 100644
index e4d3439..0000000
--- a/esy.lock/opam/nocrypto.0.5.4-2/files/0002-add-ppx_sexp_conv-as-a-runtime-dependency-in-the-pac.patch
+++ /dev/null
@@ -1,39 +0,0 @@
-From dc799fd2a66c41ca7729201a5d038cd403ca1de6 Mon Sep 17 00:00:00 2001
-From: Gabriel Scherer <gabriel.scherer@gmail.com>
-Date: Tue, 27 Mar 2018 12:00:23 +0200
-Subject: [PATCH 2/4] add ppx_sexp_conv as a runtime dependency in the
- packaging metadata
-
----
- opam     | 2 +-
- pkg/META | 2 +-
- 2 files changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/opam b/opam
-index ad1dbc7..c35570b 100644
---- a/opam
-+++ b/opam
-@@ -20,7 +20,7 @@ depends: [
-   "topkg" {build}
-   "cpuid" {build}
-   "ocb-stubblr" {build}
--  "ppx_sexp_conv" {build}
-+  "ppx_sexp_conv"
-   "oUnit" {test}
-   "cstruct"
-   "zarith"
-diff --git a/pkg/META b/pkg/META
-index 242b2bb..a7929c7 100644
---- a/pkg/META
-+++ b/pkg/META
-@@ -1,6 +1,6 @@
- version = "0.5.4"
- description = "Simple crypto for the modern age"
--requires = "cstruct zarith sexplib"
-+requires = "cstruct zarith sexplib ppx_sexp_conv"
- archive(byte) = "nocrypto.cma"
- archive(native) = "nocrypto.cmxa"
- plugin(byte) = "nocrypto.cma"
--- 
-2.18.0
-
diff --git a/esy.lock/opam/nocrypto.0.5.4-2/files/0003-Auto-detect-ppx_sexp_conv-runtime-library.patch b/esy.lock/opam/nocrypto.0.5.4-2/files/0003-Auto-detect-ppx_sexp_conv-runtime-library.patch
deleted file mode 100644
index e2f03a1..0000000
--- a/esy.lock/opam/nocrypto.0.5.4-2/files/0003-Auto-detect-ppx_sexp_conv-runtime-library.patch
+++ /dev/null
@@ -1,146 +0,0 @@
-From ad9278021a65d423e30765e58110848adda4b13e Mon Sep 17 00:00:00 2001
-From: Jeremie Dimino <jeremie@dimino.org>
-Date: Fri, 11 May 2018 15:44:47 +0200
-Subject: [PATCH 3/4] Auto-detect ppx_sexp_conv runtime library
-
----
- myocamlbuild.ml | 25 ++++++++++++++++++++++---
- pkg/META        | 43 -------------------------------------------
- pkg/META.in     | 43 +++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 65 insertions(+), 46 deletions(-)
- delete mode 100644 pkg/META
- create mode 100644 pkg/META.in
-
-diff --git a/myocamlbuild.ml b/myocamlbuild.ml
-index 2752315..7b29635 100644
---- a/myocamlbuild.ml
-+++ b/myocamlbuild.ml
-@@ -1,5 +1,24 @@
- open Ocamlbuild_plugin
- 
--let () = dispatch Ocb_stubblr.(
--  init & ccopt ~tags:["accelerate"] "-DACCELERATE -msse2 -maes"
--)
-+let runtime_deps_of_ppx ppx =
-+  (Findlib.query "ppx_sexp_conv").dependencies
-+  |> List.filter_opt (fun { Findlib.name; _ } ->
-+      if name = ppx || name = "ppx_deriving" then
-+        None
-+      else
-+        Some name)
-+
-+let () = dispatch (fun hook ->
-+    Ocb_stubblr.(
-+      init & ccopt ~tags:["accelerate"] "-DACCELERATE -msse2 -maes"
-+    ) hook;
-+    match hook with
-+    | After_rules ->
-+      let meta = "pkg/META" in
-+      let meta_in = meta ^ ".in" in
-+      rule meta ~dep:meta_in ~prod:meta (fun _ _ ->
-+          let deps = String.concat " " (runtime_deps_of_ppx "ppx_sexp_conv") in
-+          Echo([String.subst "PPX_SEXP_CONV_RUNTIME" deps
-+                  (Pathname.read meta_in)],
-+               meta))
-+    | _ -> ())
-diff --git a/pkg/META b/pkg/META
-deleted file mode 100644
-index a7929c7..0000000
---- a/pkg/META
-+++ /dev/null
-@@ -1,43 +0,0 @@
--version = "0.5.4"
--description = "Simple crypto for the modern age"
--requires = "cstruct zarith sexplib ppx_sexp_conv"
--archive(byte) = "nocrypto.cma"
--archive(native) = "nocrypto.cmxa"
--plugin(byte) = "nocrypto.cma"
--plugin(native) = "nocrypto.cmxs"
--xen_linkopts = "-lnocrypto_stubs+mirage-xen"
--freestanding_linkopts = "-lnocrypto_stubs+mirage-freestanding"
--exists_if = "nocrypto.cma"
--
--package "unix" (
-- version = "0.5.4"
-- description = "Simple crypto for the modern age"
-- requires = "nocrypto unix bytes"
-- archive(byte) = "nocrypto_unix.cma"
-- archive(native) = "nocrypto_unix.cmxa"
-- plugin(byte) = "nocrypto_unix.cma"
-- plugin(native) = "nocrypto_unix.cmxs"
-- exists_if = "nocrypto_unix.cma"
--)
--
--package "lwt" (
-- version = "0.5.4"
-- description = "Simple crypto for the modern age"
-- requires = "nocrypto nocrypto.unix lwt.unix cstruct.lwt"
-- archive(byte) = "nocrypto_lwt.cma"
-- archive(native) = "nocrypto_lwt.cmxa"
-- plugin(byte) = "nocrypto_lwt.cma"
-- plugin(native) = "nocrypto_lwt.cmxs"
-- exists_if = "nocrypto_lwt.cma"
--)
--
--package "mirage" (
-- version = "0.5.4"
-- description = "Simple crypto for the modern age"
-- requires = "nocrypto lwt mirage-entropy"
-- archive(byte) = "nocrypto_mirage.cma"
-- archive(native) = "nocrypto_mirage.cmxa"
-- plugin(byte) = "nocrypto_mirage.cma"
-- plugin(native) = "nocrypto_mirage.cmxs"
-- exists_if = "nocrypto_mirage.cma"
--)
-diff --git a/pkg/META.in b/pkg/META.in
-new file mode 100644
-index 0000000..0b263d7
---- /dev/null
-+++ b/pkg/META.in
-@@ -0,0 +1,43 @@
-+version = "0.5.4"
-+description = "Simple crypto for the modern age"
-+requires = "cstruct zarith sexplib PPX_SEXP_CONV_RUNTIME"
-+archive(byte) = "nocrypto.cma"
-+archive(native) = "nocrypto.cmxa"
-+plugin(byte) = "nocrypto.cma"
-+plugin(native) = "nocrypto.cmxs"
-+xen_linkopts = "-lnocrypto_stubs+mirage-xen"
-+freestanding_linkopts = "-lnocrypto_stubs+mirage-freestanding"
-+exists_if = "nocrypto.cma"
-+
-+package "unix" (
-+ version = "0.5.4"
-+ description = "Simple crypto for the modern age"
-+ requires = "nocrypto unix bytes"
-+ archive(byte) = "nocrypto_unix.cma"
-+ archive(native) = "nocrypto_unix.cmxa"
-+ plugin(byte) = "nocrypto_unix.cma"
-+ plugin(native) = "nocrypto_unix.cmxs"
-+ exists_if = "nocrypto_unix.cma"
-+)
-+
-+package "lwt" (
-+ version = "0.5.4"
-+ description = "Simple crypto for the modern age"
-+ requires = "nocrypto nocrypto.unix lwt.unix cstruct.lwt"
-+ archive(byte) = "nocrypto_lwt.cma"
-+ archive(native) = "nocrypto_lwt.cmxa"
-+ plugin(byte) = "nocrypto_lwt.cma"
-+ plugin(native) = "nocrypto_lwt.cmxs"
-+ exists_if = "nocrypto_lwt.cma"
-+)
-+
-+package "mirage" (
-+ version = "0.5.4"
-+ description = "Simple crypto for the modern age"
-+ requires = "nocrypto lwt mirage-entropy"
-+ archive(byte) = "nocrypto_mirage.cma"
-+ archive(native) = "nocrypto_mirage.cmxa"
-+ plugin(byte) = "nocrypto_mirage.cma"
-+ plugin(native) = "nocrypto_mirage.cmxs"
-+ exists_if = "nocrypto_mirage.cma"
-+)
--- 
-2.18.0
-
diff --git a/esy.lock/opam/nocrypto.0.5.4-2/files/0004-pack-package-workaround-ocamlbuild-272.patch b/esy.lock/opam/nocrypto.0.5.4-2/files/0004-pack-package-workaround-ocamlbuild-272.patch
deleted file mode 100644
index 8bda0db..0000000
--- a/esy.lock/opam/nocrypto.0.5.4-2/files/0004-pack-package-workaround-ocamlbuild-272.patch
+++ /dev/null
@@ -1,38 +0,0 @@
-From 063b3496340fe4c3544b532ec0d27797b7917bb4 Mon Sep 17 00:00:00 2001
-From: Gabriel Scherer <gabriel.scherer@gmail.com>
-Date: Mon, 26 Mar 2018 16:07:45 +0200
-Subject: [PATCH 4/4] pack+package: workaround ocamlbuild#272
-
-ocamlbuild should pass -package(...) flags to ocamlfind when building
-a -pack-ed file, see
-
-  https://github.com/ocaml/opam-repository/pull/11628#issuecomment-375697444
----
- myocamlbuild.ml | 8 ++++++++
- 1 file changed, 8 insertions(+)
-
-diff --git a/myocamlbuild.ml b/myocamlbuild.ml
-index 7b29635..7a5cdb6 100644
---- a/myocamlbuild.ml
-+++ b/myocamlbuild.ml
-@@ -8,9 +8,17 @@ let runtime_deps_of_ppx ppx =
-       else
-         Some name)
- 
-+let ocamlfind_and_pack = function
-+  | After_rules ->
-+     if !Options.use_ocamlfind then
-+       pflag ["ocaml"; "pack"] "package"
-+         (fun pkg -> S [A "-package"; A pkg]);
-+  | _ -> ()
-+
- let () = dispatch (fun hook ->
-     Ocb_stubblr.(
-       init & ccopt ~tags:["accelerate"] "-DACCELERATE -msse2 -maes"
-+      & ocamlfind_and_pack
-     ) hook;
-     match hook with
-     | After_rules ->
--- 
-2.18.0
-
diff --git a/esy.lock/opam/nocrypto.0.5.4-2/files/0005-use-modern-cstruct-findlib.patch b/esy.lock/opam/nocrypto.0.5.4-2/files/0005-use-modern-cstruct-findlib.patch
deleted file mode 100644
index 406df1c..0000000
--- a/esy.lock/opam/nocrypto.0.5.4-2/files/0005-use-modern-cstruct-findlib.patch
+++ /dev/null
@@ -1,32 +0,0 @@
-From 063b3496340fe4c3544b532ec0d27797b7917bb4 Mon Sep 17 00:00:00 2001
-From: Anil Madhavapeddy <anil@recoil.org>
-Date: Tue, 12 Mar 2019 09:07:13 +0000
-Subject: [PATCH 5/5] use modern cstruct findlib
-
-see https://discuss.ocaml.org/t/psa-cstruct-3-4-0-removes-old-ocamlfind-subpackage-aliases/3275
-
---- a/_tags.orig        2019-03-12 09:03:58.000000000 +0000
-+++ b/_tags     2019-03-12 09:04:12.000000000 +0000
-@@ -13,7 +13,7 @@
- <unix/*.ml{,i}>: package(unix), package(bytes)
-
- <lwt>: include
--<lwt/*.ml{,i}>: package(lwt.unix), package(cstruct.lwt)
-+<lwt/*.ml{,i}>: package(lwt.unix), package(cstruct-lwt)
-
- <mirage>: include
- <mirage/*.ml{,i}>: package(lwt), package(mirage-entropy)
---- a/pkg/META.in.orig  2019-03-12 09:03:19.000000000 +0000
-+++ b/pkg/META.in       2019-03-12 09:03:33.000000000 +0000
-@@ -23,7 +23,7 @@
- package "lwt" (
-  version = "0.5.4"
-  description = "Simple crypto for the modern age"
-- requires = "nocrypto nocrypto.unix lwt.unix cstruct.lwt"
-+ requires = "nocrypto nocrypto.unix lwt.unix cstruct-lwt"
-  archive(byte) = "nocrypto_lwt.cma"
-  archive(native) = "nocrypto_lwt.cmxa"
-  plugin(byte) = "nocrypto_lwt.cma"
--- 
-2.18.0
-
diff --git a/esy.lock/opam/nocrypto.0.5.4-2/files/0006-explicit-dependency-on-sexplib.patch b/esy.lock/opam/nocrypto.0.5.4-2/files/0006-explicit-dependency-on-sexplib.patch
deleted file mode 100644
index 80c8075..0000000
--- a/esy.lock/opam/nocrypto.0.5.4-2/files/0006-explicit-dependency-on-sexplib.patch
+++ /dev/null
@@ -1,24 +0,0 @@
-From 063b3496340fe4c3544b532ec0d27797b7917bb4 Mon Sep 17 00:00:00 2001
-From: Anil Madhavapeddy <anil@recoil.org>
-Date: Tue, 26 Mar 2019 20:07:13 +0000
-Subject: [PATCH 6/6] explicitly depend on sexplib
-
-Need to explicitly depend on sexplib rather than hope
-it is a transitive dependency of cstruct. This lets
-cstruct.4.0.0 work which makes sexplib optional.
-
---- a/_tags.orig	2019-03-26 20:33:33.000000000 +0000
-+++ b/_tags	2019-03-26 20:33:42.000000000 +0000
-@@ -1,7 +1,7 @@
- true: color(always)
- true: bin_annot, safe_string
- true: warn(A-4-29-33-40-41-42-43-34-44-48)
--true: package(bytes), package(cstruct)
-+true: package(bytes), package(sexplib), package(cstruct)
-
- <src>: include
- <src/*.ml{,i}>: package(zarith), package(sexplib), package(ppx_sexp_conv)
-
--- 
-2.18.0
-
diff --git a/esy.lock/opam/nocrypto.0.5.4-2/files/0007-mirage-entropy.patch b/esy.lock/opam/nocrypto.0.5.4-2/files/0007-mirage-entropy.patch
deleted file mode 100644
index 559c063..0000000
--- a/esy.lock/opam/nocrypto.0.5.4-2/files/0007-mirage-entropy.patch
+++ /dev/null
@@ -1,58 +0,0 @@
-From: Hannes Mehnert <hannes@mehnert.org>
-Subject: [PATCH 1/1] compile mirage-entropy sublibrary if mirage-entropy is installed
-
-Previously the compilation depended on mirage-xen or ocaml-freestanding being
-present, but _tags show the dependency is actually mirage-entropy.
-
---- a/opam	2019-11-02 13:38:17.202429000 +0100
-+++ b/opam	2019-11-02 13:39:19.173535000 +0100
-@@ -12,6 +12,7 @@
- 
- build: ["ocaml" "pkg/pkg.ml" "build" "--pinned" "%{pinned}%" "--tests" "false"
-                 "--with-lwt" "%{lwt:installed}%"
-+                "--with-mirage" "%{mirage-entropy:installed}%"
-                 "--xen" "%{mirage-xen:installed}%"
-                 "--freestanding" "%{ocaml-freestanding:installed}%"]
- 
-@@ -26,11 +27,11 @@
-   "cstruct"
-   "zarith"
-   "sexplib"
--  ("mirage-no-xen" | ("mirage-xen" & "mirage-entropy" & "zarith-xen"))
--  ("mirage-no-solo5" | ("mirage-solo5" & "mirage-entropy" & "zarith-freestanding"))
-+  ("mirage-no-xen" | ("mirage-xen" & "zarith-xen"))
-+  ("mirage-no-solo5" | ("mirage-solo5" & "zarith-freestanding"))
- ]
- 
--depopts: [ "lwt" ]
-+depopts: [ "lwt" "mirage-entropy" ]
- conflicts: [
-   "topkg" {<"0.8.0"}
-   "ocb-stubblr" {<"0.1.0"}
---- a/pkg/pkg.ml	2017-02-01 00:43:04.000000000 +0100
-+++ b/pkg/pkg.ml	2019-11-02 13:37:30.295780000 +0100
-@@ -11,6 +11,7 @@
- 
- let unix = Conf.with_pkg ~default:true "unix"
- let lwt  = Conf.with_pkg ~default:false "lwt"
-+let mirage_entropy = Conf.with_pkg ~default:false "mirage"
- let xen  = Conf.(key "xen" bool ~absent:false
-                  ~doc:"Build Mirage/Xen support.")
- let fs   = Conf.(key "freestanding" bool ~absent:false
-@@ -39,12 +40,14 @@
-     let unix = Conf.value c unix in
-     let lwt  = Conf.value c lwt && unix
-     and xen  = Conf.value c xen
--    and fs   = Conf.value c fs in
-+    and fs   = Conf.value c fs
-+    and mirage_entropy = Conf.value c mirage_entropy
-+    in
-     Ok [ Pkg.clib "src/libnocrypto_stubs.clib";
-          Pkg.mllib "src/nocrypto.mllib";
-          Pkg.mllib ~cond:unix "unix/nocrypto_unix.mllib";
-          Pkg.mllib ~cond:lwt "lwt/nocrypto_lwt.mllib";
--         Pkg.mllib ~cond:(xen||fs) "mirage/nocrypto_mirage.mllib";
-+         Pkg.mllib ~cond:mirage_entropy "mirage/nocrypto_mirage.mllib";
-          Pkg.test "tests/testrunner";
-          Pkg.test ~run:false "bench/speed";
-          mirage ~xen ~fs "src/libnocrypto_stubs.clib"; ]
diff --git a/esy.lock/opam/nocrypto.0.5.4-2/opam b/esy.lock/opam/nocrypto.0.5.4-2/opam
deleted file mode 100644
index 227df02..0000000
--- a/esy.lock/opam/nocrypto.0.5.4-2/opam
+++ /dev/null
@@ -1,95 +0,0 @@
-opam-version: "2.0"
-homepage:     "https://github.com/mirleft/ocaml-nocrypto"
-dev-repo: "git+https://github.com/mirleft/ocaml-nocrypto.git"
-bug-reports:  "https://github.com/mirleft/ocaml-nocrypto/issues"
-doc:          "https://mirleft.github.io/ocaml-nocrypto/doc"
-authors:      ["David Kaloper <david@numm.org>"]
-maintainer:   "David Kaloper <david@numm.org>"
-license:      "ISC"
-tags:          [ "org:mirage" ]
-build: ["ocaml" "pkg/pkg.ml" "build" "--pinned" "%{pinned}%" "--tests" "false"
-                "--jobs" "1"
-                "--with-lwt" "%{lwt:installed}%"
-                "--with-mirage" "%{mirage-entropy:installed}%"
-                "--xen" "%{mirage-xen:installed}%"
-                "--freestanding" "%{mirage-solo5:installed}%"]
-
-depends: [
-  "ocaml" {>= "4.02.0"}
-  "ocamlfind" {build}
-  "ocamlbuild" {build}
-  "topkg" {build}
-  "cpuid" {build}
-  "ocb-stubblr" {build}
-  "ppx_deriving"
-  "ppx_sexp_conv" {>= "113.33.01" & != "v0.11.0" & < "v0.14"}
-  "ounit" {with-test}
-  "cstruct" {>= "3.0.0"}
-  "cstruct-lwt"
-  "zarith"
-  "lwt"
-  "sexplib" {< "v0.14"}
-  "mirage-no-xen" | ("mirage-xen" & "zarith-xen")
-  "mirage-no-solo5" | ("mirage-solo5" & "zarith-freestanding")
-]
-depopts: [ "mirage-entropy" ]
-conflicts: [
-  "topkg" {<"0.9.1"}
-  "ocb-stubblr" {<"0.1.0"}
-  "mirage-xen" {<"2.2.0"}
-  "sexplib" {="v0.9.0"}
-  "ocaml" {= "4.08.0"}
-]
-
-patches: [
-    "0001-add-missing-runtime-dependencies-in-_tags.patch"
-    "0002-add-ppx_sexp_conv-as-a-runtime-dependency-in-the-pac.patch"
-    "0003-Auto-detect-ppx_sexp_conv-runtime-library.patch"
-    "0004-pack-package-workaround-ocamlbuild-272.patch"
-    "0005-use-modern-cstruct-findlib.patch"
-    "0006-explicit-dependency-on-sexplib.patch"
-    "0007-mirage-entropy.patch"
-]
-synopsis: "Simpler crypto"
-description: """
-nocrypto is a small cryptographic library that puts emphasis on the applicative
-style and ease of use. It includes basic ciphers (AES, 3DES, RC4), hashes (MD5,
-SHA1, SHA2), public-key primitives (RSA, DSA, DH) and a strong RNG (Fortuna).
-
-RSA timing attacks are countered by blinding. AES timing attacks are avoided by
-delegating to AES-NI."""
-extra-files: [
-  [
-    "0007-mirage-entropy.patch"
-    "md5=bb3368e3fd64857a6d05e1a3e61f08cf"
-  ]
-  [
-    "0006-explicit-dependency-on-sexplib.patch"
-    "md5=7f552e18ba304eb4e1e19d66d19b7888"
-  ]
-  [
-    "0005-use-modern-cstruct-findlib.patch"
-    "md5=4d4aab890f0ca9327d83548c32d64efc"
-  ]
-  [
-    "0004-pack-package-workaround-ocamlbuild-272.patch"
-    "md5=94615e4a8d5976e9e75c3b031d3484f1"
-  ]
-  [
-    "0003-Auto-detect-ppx_sexp_conv-runtime-library.patch"
-    "md5=871b3f904cf87527b7390993d5598884"
-  ]
-  [
-    "0002-add-ppx_sexp_conv-as-a-runtime-dependency-in-the-pac.patch"
-    "md5=06962f4f2f5b4c3f1e39293b3d3528f2"
-  ]
-  [
-    "0001-add-missing-runtime-dependencies-in-_tags.patch"
-    "md5=ae679a096e14c0a0ecb881bc7432cc2a"
-  ]
-]
-url {
-  src:
-    "https://github.com/mirleft/ocaml-nocrypto/releases/download/v0.5.4/nocrypto-0.5.4.tbz"
-  checksum: "md5=c331a7a4d2a563d1d5ed581aeb849011"
-}
diff --git a/esy.lock/opam/num.1.3/files/installation-warning.patch b/esy.lock/opam/num.1.3/files/installation-warning.patch
deleted file mode 100644
index 88ef9b6..0000000
--- a/esy.lock/opam/num.1.3/files/installation-warning.patch
+++ /dev/null
@@ -1,59 +0,0 @@
-From db8d748b2cad0adc2698e9fcf28727083a711bae Mon Sep 17 00:00:00 2001
-From: David Allsopp <david.allsopp@metastack.com>
-Date: Wed, 24 Jan 2018 16:01:56 +0000
-Subject: [PATCH] Warn about installations broken by previous faulty package
-
----
- Makefile | 33 +++++++++++++++++++++++++++++++++
- 1 file changed, 33 insertions(+)
-
-diff --git a/Makefile b/Makefile
-index b40e588..d4dcd70 100644
---- a/Makefile
-+++ b/Makefile
-@@ -14,9 +14,42 @@ install:
- 	$(MAKE) -C src install
- 	$(MAKE) -C toplevel install
- 
-+OCAMLFIND_DIR:=$(dir $(shell command -v ocamlfind 2>/dev/null))
-+OCAMLC_DIR:=$(dir $(shell command -v ocamlc 2>/dev/null))
-+NUM_INSTALLED:=$(shell ocamlfind query num 2>/dev/null)
-+
-+ifeq ($(NUM_INSTALLED),)
-+# The num findlib package is not already present - wohoo!
-+OUR_FAULT=no
-+else
-+ifeq ($(OCAMLFIND_DIR),$(OCAMLC_DIR))
-+# The num findlib package is present, but ocamlc and ocamlfind are in the
-+# same place, which means that either we're looking at a system-installed
-+# ocamlfind (which isn't supported), or the user has done something else
-+# nefarious and doesn't deserve our sympathy (or, at least, our potentially
-+# unhelpful advice)
-+OUR_FAULT=no
-+else
-+# The num findlib package package is present, and ocamlc and ocamlfind reside
-+# in different directories, which means that we're almost certainly looking at
-+# a system switch which has been damaged by a previous num package installation
-+# on an OS which didn't protect the system lib directory.
-+OUR_FAULT=probably
-+endif
-+endif
-+
- findlib-install:
-+ifeq ($(OUR_FAULT),no)
- 	$(MAKE) -C src findlib-install
- 	$(MAKE) -C toplevel install
-+else
-+	@echo "\033[0;31m[ERROR]\033[m It appears that the num library was previously installed to your system"
-+	@echo "        compiler's lib directory, probably by a faulty opam package."
-+	@echo "        You will need to remove arith_flags.*, arith_status.*, big_int.*,"
-+	@echo "        int_misc.*, nat.*, num.*, ratio.*, nums.*, libnums.* and"
-+	@echo "        stublibs/dllnums.* from $(shell ocamlc -where)."
-+	@false
-+endif
- 
- uninstall:
- 	$(MAKE) -C src uninstall
--- 
-2.14.1
-
diff --git a/esy.lock/opam/num.1.3/opam b/esy.lock/opam/num.1.3/opam
deleted file mode 100644
index 412d737..0000000
--- a/esy.lock/opam/num.1.3/opam
+++ /dev/null
@@ -1,34 +0,0 @@
-opam-version: "2.0"
-maintainer: "Xavier Leroy <xavier.leroy@inria.fr>"
-authors: [
-  "Valérie Ménissier-Morain"
-  "Pierre Weis"
-  "Xavier Leroy"
-]
-license: "LGPL-2.1-only with OCaml-LGPL-linking-exception"
-homepage: "https://github.com/ocaml/num/"
-bug-reports: "https://github.com/ocaml/num/issues"
-dev-repo: "git+https://github.com/ocaml/num.git"
-build: [
-  [make]
-]
-install: [
-  make
-  "install" {!ocaml:preinstalled}
-  "findlib-install" {ocaml:preinstalled}
-]
-depends: [
-  "ocaml" {>= "4.06.0"}
-  "ocamlfind" {build & >= "1.7.3"}
-]
-conflicts: [ "base-num" ]
-patches: [ "installation-warning.patch" ]
-synopsis:
-  "The legacy Num library for arbitrary-precision integer and rational arithmetic"
-extra-files: [
-  ["installation-warning.patch" "md5=93c92bf6da6bae09d068da42b1bbaaac"]
-]
-url {
-  src: "https://github.com/ocaml/num/archive/v1.3.tar.gz"
-  checksum: "md5=f074e12325e84ebc883b37e5db10403d"
-}
diff --git a/esy.lock/opam/ocaml-compiler-libs.v0.12.1/opam b/esy.lock/opam/ocaml-compiler-libs.v0.12.1/opam
deleted file mode 100644
index 66f2549..0000000
--- a/esy.lock/opam/ocaml-compiler-libs.v0.12.1/opam
+++ /dev/null
@@ -1,23 +0,0 @@
-opam-version: "2.0"
-maintainer: "opensource@janestreet.com"
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-homepage: "https://github.com/janestreet/ocaml-compiler-libs"
-bug-reports: "https://github.com/janestreet/ocaml-compiler-libs/issues"
-dev-repo: "git+https://github.com/janestreet/ocaml-compiler-libs.git"
-license: "Apache-2.0"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml" {>= "4.04.1"}
-  "dune" {>= "1.5.1"}
-]
-synopsis: "OCaml compiler libraries repackaged"
-description: """
-This packages exposes the OCaml compiler libraries repackages under
-the toplevel names Ocaml_common, Ocaml_bytecomp, Ocaml_optcomp, ..."""
-url {
-  src:
-    "https://github.com/janestreet/ocaml-compiler-libs/archive/v0.12.1.tar.gz"
-  checksum: "md5=2f929af7c764a3f681a5671f271210c4"
-}
diff --git a/esy.lock/opam/ocaml-migrate-parsetree.1.6.0/opam b/esy.lock/opam/ocaml-migrate-parsetree.1.6.0/opam
deleted file mode 100644
index 2437975..0000000
--- a/esy.lock/opam/ocaml-migrate-parsetree.1.6.0/opam
+++ /dev/null
@@ -1,37 +0,0 @@
-opam-version: "2.0"
-maintainer: "frederic.bour@lakaban.net"
-authors: [
-  "Frédéric Bour <frederic.bour@lakaban.net>"
-  "Jérémie Dimino <jeremie@dimino.org>"
-]
-license: "LGPL-2.1 with OCaml linking exception"
-homepage: "https://github.com/ocaml-ppx/ocaml-migrate-parsetree"
-bug-reports: "https://github.com/ocaml-ppx/ocaml-migrate-parsetree/issues"
-dev-repo: "git+https://github.com/ocaml-ppx/ocaml-migrate-parsetree.git"
-doc: "https://ocaml-ppx.github.io/ocaml-migrate-parsetree/"
-tags: [ "syntax" "org:ocamllabs" ]
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "result"
-  "ppx_derivers"
-  "dune" {>= "1.9.0"}
-  "ocaml" {>= "4.02.3"}
-]
-synopsis: "Convert OCaml parsetrees between different versions"
-description: """
-Convert OCaml parsetrees between different versions
-
-This library converts parsetrees, outcometree and ast mappers between
-different OCaml versions.  High-level functions help making PPX
-rewriters independent of a compiler version.
-"""
-url {
-  src:
-    "https://github.com/ocaml-ppx/ocaml-migrate-parsetree/releases/download/v1.6.0/ocaml-migrate-parsetree-v1.6.0.tbz"
-  checksum: [
-    "sha256=9b018e7d25114ce17fc0b82b7cd7c927b84ebb6b043aa987fa7731c2484de33f"
-    "sha512=e03a5fe44ecf43683c764a7285a65bfa80639c09badf422661723bc3483d6d799c47c1ead34c2caa289a37e1b4b46d809c8cc56537d5c76e6004849d2d8a305f"
-  ]
-}
diff --git a/esy.lock/opam/ocamlbuild.0.14.0/opam b/esy.lock/opam/ocamlbuild.0.14.0/opam
deleted file mode 100644
index 8deabee..0000000
--- a/esy.lock/opam/ocamlbuild.0.14.0/opam
+++ /dev/null
@@ -1,36 +0,0 @@
-opam-version: "2.0"
-maintainer: "Gabriel Scherer <gabriel.scherer@gmail.com>"
-authors: ["Nicolas Pouillard" "Berke Durak"]
-homepage: "https://github.com/ocaml/ocamlbuild/"
-bug-reports: "https://github.com/ocaml/ocamlbuild/issues"
-license: "LGPL-2.1-only with OCaml-LGPL-linking-exception"
-doc: "https://github.com/ocaml/ocamlbuild/blob/master/manual/manual.adoc"
-dev-repo: "git+https://github.com/ocaml/ocamlbuild.git"
-build: [
-  [
-    make
-    "-f"
-    "configure.make"
-    "all"
-    "OCAMLBUILD_PREFIX=%{prefix}%"
-    "OCAMLBUILD_BINDIR=%{bin}%"
-    "OCAMLBUILD_LIBDIR=%{lib}%"
-    "OCAMLBUILD_MANDIR=%{man}%"
-    "OCAML_NATIVE=%{ocaml:native}%"
-    "OCAML_NATIVE_TOOLS=%{ocaml:native}%"
-  ]
-  [make "check-if-preinstalled" "all" "opam-install"]
-]
-conflicts: [
-  "base-ocamlbuild"
-  "ocamlfind" {< "1.6.2"}
-]
-synopsis:
-  "OCamlbuild is a build system with builtin rules to easily build most OCaml projects."
-depends: [
-  "ocaml" {>= "4.03"}
-]
-url {
-  src: "https://github.com/ocaml/ocamlbuild/archive/0.14.0.tar.gz"
-  checksum: "sha256=87b29ce96958096c0a1a8eeafeb6268077b2d11e1bf2b3de0f5ebc9cf8d42e78"
-}
diff --git a/esy.lock/opam/ocamlfind.1.8.1/files/ocaml-stub b/esy.lock/opam/ocamlfind.1.8.1/files/ocaml-stub
deleted file mode 100644
index e5ad990..0000000
--- a/esy.lock/opam/ocamlfind.1.8.1/files/ocaml-stub
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/sh
-
-BINDIR=$(dirname "$(command -v ocamlc)")
-"$BINDIR/ocaml" -I "$OCAML_TOPLEVEL_PATH" "$@"
diff --git a/esy.lock/opam/ocamlfind.1.8.1/files/ocamlfind.install b/esy.lock/opam/ocamlfind.1.8.1/files/ocamlfind.install
deleted file mode 100644
index 295c625..0000000
--- a/esy.lock/opam/ocamlfind.1.8.1/files/ocamlfind.install
+++ /dev/null
@@ -1,6 +0,0 @@
-bin: [
-  "src/findlib/ocamlfind" {"ocamlfind"}
-  "?src/findlib/ocamlfind_opt" {"ocamlfind"}
-  "?tools/safe_camlp4"
-]
-toplevel: ["src/findlib/topfind"]
diff --git a/esy.lock/opam/ocamlfind.1.8.1/opam b/esy.lock/opam/ocamlfind.1.8.1/opam
deleted file mode 100644
index d757d66..0000000
--- a/esy.lock/opam/ocamlfind.1.8.1/opam
+++ /dev/null
@@ -1,50 +0,0 @@
-opam-version: "2.0"
-synopsis: "A library manager for OCaml"
-maintainer: "Thomas Gazagnaire <thomas@gazagnaire.org>"
-authors: "Gerd Stolpmann <gerd@gerd-stolpmann.de>"
-homepage: "http://projects.camlcity.org/projects/findlib.html"
-bug-reports: "https://gitlab.camlcity.org/gerd/lib-findlib/issues"
-dev-repo: "git+https://gitlab.camlcity.org/gerd/lib-findlib.git"
-description: """
-Findlib is a library manager for OCaml. It provides a convention how
-to store libraries, and a file format ("META") to describe the
-properties of libraries. There is also a tool (ocamlfind) for
-interpreting the META files, so that it is very easy to use libraries
-in programs and scripts.
-"""
-build: [
-  [
-    "./configure"
-    "-bindir"
-    bin
-    "-sitelib"
-    lib
-    "-mandir"
-    man
-    "-config"
-    "%{lib}%/findlib.conf"
-    "-no-custom"
-    "-no-camlp4" {!ocaml:preinstalled & ocaml:version >= "4.02.0"}
-    "-no-topfind" {ocaml:preinstalled}
-  ]
-  [make "all"]
-  [make "opt"] {ocaml:native}
-]
-install: [
-  [make "install"]
-  ["install" "-m" "0755" "ocaml-stub" "%{bin}%/ocaml"] {ocaml:preinstalled}
-]
-depends: [
-  "ocaml" {>= "4.00.0"}
-  "conf-m4" {build}
-]
-extra-files: [
-  ["ocamlfind.install" "md5=06f2c282ab52d93aa6adeeadd82a2543"]
-  ["ocaml-stub" "md5=181f259c9e0bad9ef523e7d4abfdf87a"]
-]
-url {
-  src: "http://download.camlcity.org/download/findlib-1.8.1.tar.gz"
-  checksum: "md5=18ca650982c15536616dea0e422cbd8c"
-  mirrors: "http://download2.camlcity.org/download/findlib-1.8.1.tar.gz"
-}
-depopts: ["graphics"]
diff --git a/esy.lock/opam/ocb-stubblr.0.1.1-1/files/custom-cclib.patch b/esy.lock/opam/ocb-stubblr.0.1.1-1/files/custom-cclib.patch
deleted file mode 100644
index e78b0df..0000000
--- a/esy.lock/opam/ocb-stubblr.0.1.1-1/files/custom-cclib.patch
+++ /dev/null
@@ -1,22 +0,0 @@
-From d51b3f3a49f159469e00d23524db915f19bb0127 Mon Sep 17 00:00:00 2001
-From: Hannes Mehnert <hannes@mehnert.org>
-Date: Tue, 3 Oct 2017 13:55:16 +0100
-Subject: [PATCH] bytecode / custom needs -cclib as well
-
----
- src/ocb_stubblr.ml | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/ocb_stubblr.ml b/src/ocb_stubblr.ml
-index b68c37a..a0ee035 100644
---- a/src/ocb_stubblr.ml
-+++ b/src/ocb_stubblr.ml
-@@ -160,7 +160,7 @@ let link_flag () =
-     S [A switch; A ("-l"^name)]
-   and dep flag = Pathname.([remove_extension flag -.- "a"]) in
-   pflag ["link"; "ocaml"; "library"; "byte"] tag (libarg "-dllib");
--  pflag ["link"; "ocaml"; "library"; "native"] tag  (libarg "-cclib");
-+  pflag ["link"; "ocaml"; "library"] tag  (libarg "-cclib");
-   pdep ["link"; "ocaml"] tag dep;
-   pdep ["compile"; "ocaml"] tag dep
-   (* XXX sneak in '-I' for compile;ocaml;program ?? *)
diff --git a/esy.lock/opam/ocb-stubblr.0.1.1-1/files/use-OPAM_SWITCH_PREFIX.patch b/esy.lock/opam/ocb-stubblr.0.1.1-1/files/use-OPAM_SWITCH_PREFIX.patch
deleted file mode 100644
index 67ffc9f..0000000
--- a/esy.lock/opam/ocb-stubblr.0.1.1-1/files/use-OPAM_SWITCH_PREFIX.patch
+++ /dev/null
@@ -1,33 +0,0 @@
-From f1c9340f3ab973ad1e8dcc4b7065bbe6cfaa028f Mon Sep 17 00:00:00 2001
-From: David Allsopp <david.allsopp@metastack.com>
-Date: Sun, 1 Jul 2018 09:54:32 +0100
-Subject: [PATCH] Use OPAM_SWITCH_PREFIX before opam config var prefix
-
-opam 2's sandbox doesn't expose the mount point for the opam root.
-
-Signed-off-by: David Allsopp <david.allsopp@metastack.com>
----
- src/ocb_stubblr.ml | 6 +++++-
- 1 file changed, 5 insertions(+), 1 deletion(-)
-
-diff --git a/src/ocb_stubblr.ml b/src/ocb_stubblr.ml
-index b68c37a..2cc5332 100644
---- a/src/ocb_stubblr.ml
-+++ b/src/ocb_stubblr.ml
-@@ -31,11 +31,15 @@ module Pkg_config = struct
- 
-   (* XXX Would be nice to move pkg-config results to a build artefact. *)
- 
--  let opam_prefix =
-+  let opam_prefix_cmd =
-     let cmd = "opam config var prefix" in
-     lazy ( try run_and_read cmd with Failure _ ->
-             error_msgf "error running opam")
- 
-+  let opam_prefix =
-+    lazy (try Sys.getenv "OPAM_SWITCH_PREFIX"
-+          with Not_found -> Lazy.force opam_prefix_cmd)
-+
-   let var = "PKG_CONFIG_PATH"
- 
-   let path () =
diff --git a/esy.lock/opam/ocb-stubblr.0.1.1-1/opam b/esy.lock/opam/ocb-stubblr.0.1.1-1/opam
deleted file mode 100644
index fd2ad94..0000000
--- a/esy.lock/opam/ocb-stubblr.0.1.1-1/opam
+++ /dev/null
@@ -1,56 +0,0 @@
-opam-version: "2.0"
-maintainer: "David Kaloper Meršinjak <david@numm.org>"
-authors: ["David Kaloper Meršinjak <david@numm.org>"]
-homepage: "https://github.com/pqwy/ocb-stubblr"
-doc: "https://pqwy.github.io/ocb-stubblr/doc"
-license: "ISC"
-dev-repo: "git+https://github.com/pqwy/ocb-stubblr.git"
-bug-reports: "https://github.com/pqwy/ocb-stubblr/issues"
-tags: ["ocamlbuild"]
-depends: [
-  "ocaml" {>= "4.01.0"}
-  "ocamlfind" {build}
-  "ocamlbuild" {>= "0.9.3" | < "0.9.0"}
-  "topkg" {>= "0.8.1"}
-  "astring"
-]
-build: [ "ocaml" "pkg/pkg.ml" "build" "--pinned" "%{pinned}%" "--tests" "false" ]
-
-patches: [
-    "custom-cclib.patch"
-    "use-OPAM_SWITCH_PREFIX.patch"
-]
-
-synopsis: "OCamlbuild plugin for C stubs"
-description: """
-Do you get excited by C stubs? Do they sometimes make you swoon, and even faint,
-and in the end no `cmxa`s get properly linked -- not to mention correct
-multi-lib support?
-
-Do you wish that the things that excite you the most, would excite you just a
-little less? Then ocb-stubblr is just the library for you.
-
-ocb-stubblr is about ten lines of code that you need to repeat over, over, over
-and over again if you are using `ocamlbuild` to build OCaml projects that
-contain C stubs -- now with 100% more lib!
-
-It does what everyone wants to do with `.clib` files in their project
-directories. It can also clone the `.clib` and arrange for multiple compilations
-with different sets of discovered `cflags`.
-
-ocb-stubblr is distributed under the ISC license."""
-url {
-  src:
-    "https://github.com/pqwy/ocb-stubblr/releases/download/v0.1.1/ocb-stubblr-0.1.1.tbz"
-  checksum: "md5=607720dd18ca51e40645b42df5c1273e"
-}
-extra-files: [
-  [
-    "custom-cclib.patch"
-    "md5=d479b52a50d53dd79da2d6eea2a9a9e3"
-  ]
-  [
-    "use-OPAM_SWITCH_PREFIX.patch"
-    "md5=a7271bb1f862bd3da4ffd9caa87ca76f"
-  ]
-]
\ No newline at end of file
diff --git a/esy.lock/opam/ocplib-endian.1.0/opam b/esy.lock/opam/ocplib-endian.1.0/opam
deleted file mode 100644
index d468f3e..0000000
--- a/esy.lock/opam/ocplib-endian.1.0/opam
+++ /dev/null
@@ -1,33 +0,0 @@
-opam-version: "2.0"
-authors: "Pierre Chambart"
-maintainer: "pierre.chambart@ocamlpro.com"
-homepage: "https://github.com/OCamlPro/ocplib-endian"
-build: [
-  ["ocaml" "setup.ml" "-configure" "--disable-debug" "--prefix" prefix]
-  ["ocaml" "setup.ml" "-build"]
-]
-install: [
-  ["ocaml" "setup.ml" "-install"]
-]
-remove: ["ocamlfind" "remove" "ocplib-endian"]
-depends: [
-  "ocaml"
-  "base-bytes"
-  "ocamlfind"
-  "cppo" {>= "1.1.0"}
-  "ocamlbuild" {build}
-]
-dev-repo: "git+https://github.com/OCamlPro/ocplib-endian.git"
-bug-reports: "https://github.com/OCamlPro/ocplib-endian/issues"
-synopsis:
-  "Optimised functions to read and write int16/32/64 from strings and bigarrays, based on new primitives added in version 4.01."
-description: """
-The library implements three modules:
-* [EndianString](https://github.com/OCamlPro/ocplib-endian/blob/master/src/endianString.cppo.mli) works directly on strings, and provides submodules BigEndian and LittleEndian, with their unsafe counter-parts;
-* [EndianBytes](https://github.com/OCamlPro/ocplib-endian/blob/master/src/endianBytes.cppo.mli) works directly on bytes, and provides submodules BigEndian and LittleEndian, with their unsafe counter-parts;
-* [EndianBigstring](https://github.com/OCamlPro/ocplib-endian/blob/master/src/endianBigstring.cppo.mli) works on bigstrings (Bigarrays of chars), and provides submodules BigEndian and LittleEndian, with their unsafe counter-parts;"""
-flags: light-uninstall
-url {
-  src: "https://github.com/OCamlPro/ocplib-endian/archive/1.0.tar.gz"
-  checksum: "md5=74b45ba33e189283170a748c2a3ed477"
-}
diff --git a/esy.lock/opam/parsexp.v0.13.0/opam b/esy.lock/opam/parsexp.v0.13.0/opam
deleted file mode 100644
index 323c089..0000000
--- a/esy.lock/opam/parsexp.v0.13.0/opam
+++ /dev/null
@@ -1,43 +0,0 @@
-opam-version: "2.0"
-maintainer: "opensource@janestreet.com"
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-homepage: "https://github.com/janestreet/parsexp"
-bug-reports: "https://github.com/janestreet/parsexp/issues"
-dev-repo: "git+https://github.com/janestreet/parsexp.git"
-doc: "https://ocaml.janestreet.com/ocaml-core/latest/doc/parsexp/index.html"
-license: "MIT"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml"    {>= "4.04.2"}
-  "base"     {>= "v0.13" & < "v0.14"}
-  "sexplib0" {>= "v0.13" & < "v0.14"}
-  "dune"     {>= "1.5.1"}
-]
-synopsis: "S-expression parsing library"
-description: "
-This library provides generic parsers for parsing S-expressions from
-strings or other medium.
-
-The library is focused on performances but still provide full generic
-parsers that can be used with strings, bigstrings, lexing buffers,
-character streams or any other sources effortlessly.
-
-It provides three different class of parsers:
-- the normal parsers, producing [Sexp.t] or [Sexp.t list] values
-- the parsers with positions, building compact position sequences so
-  that one can recover original positions in order to report properly
-  located errors at little cost
-- the Concrete Syntax Tree parsers, produce values of type
-  [Parsexp.Cst.t] which record the concrete layout of the s-expression
-  syntax, including comments
-
-This library is portable and doesn't provide IO functions. To read
-s-expressions from files or other external sources, you should use
-parsexp_io.
-"
-url {
-  src: "https://ocaml.janestreet.com/ocaml-core/v0.13/files/parsexp-v0.13.0.tar.gz"
-  checksum: "md5=08d2f6eca6a1eda735bf030d2581da43"
-}
diff --git a/esy.lock/opam/ppx_cstruct.5.1.1/opam b/esy.lock/opam/ppx_cstruct.5.1.1/opam
deleted file mode 100644
index 370cf2b..0000000
--- a/esy.lock/opam/ppx_cstruct.5.1.1/opam
+++ /dev/null
@@ -1,44 +0,0 @@
-opam-version: "2.0"
-maintainer:   "anil@recoil.org"
-authors:      ["Anil Madhavapeddy" "Richard Mortier" "Thomas Gazagnaire"
-               "Pierre Chambart" "David Kaloper" "Jeremy Yallop" "David Scott"
-               "Mindy Preston" "Thomas Leonard" "Etienne Millon" ]
-homepage:     "https://github.com/mirage/ocaml-cstruct"
-license:      "ISC"
-dev-repo: "git+https://github.com/mirage/ocaml-cstruct.git"
-bug-reports:  "https://github.com/mirage/ocaml-cstruct/issues"
-doc: "https://mirage.github.io/ocaml-cstruct/"
-
-tags: [ "org:mirage" "org:ocamllabs" ]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-depends: [
-  "ocaml" {>= "4.03.0"}
-  "dune"
-  "cstruct" {=version}
-  "ounit" {with-test}
-  "ppx_tools_versioned" {>= "5.0.1"}
-  "ocaml-migrate-parsetree"
-  "ppx_sexp_conv" {with-test}
-  "sexplib" {>="v0.9.0"}
-  "cstruct-sexp" {with-test}
-  "cppo" {with-test}
-  "cstruct-unix" {with-test & =version}
-  "stdlib-shims"
-]
-synopsis: "Access C-like structures directly from OCaml"
-description: """
-Cstruct is a library and syntax extension to make it easier to access C-like
-structures directly from OCaml.  It supports both reading and writing to these
-structures, and they are accessed via the `Bigarray` module."""
-url {
-  src:
-    "https://github.com/mirage/ocaml-cstruct/releases/download/v5.1.1/cstruct-v5.1.1.tbz"
-  checksum: [
-    "sha256=55d1f42cb85f7872fee499c5ed382aea17b06d55d1709e071d1ba85c7a09fef3"
-    "sha512=c3aa9a5a9125a1d022506a76fd7cdf32b21edcdc9df1202d8a9f382d02a28a33fea9a958f79e9302907ade1fce3f166b620c320aed6486e3efcc9a7464379cab"
-  ]
-}
diff --git a/esy.lock/opam/ppx_derivers.1.2.1/opam b/esy.lock/opam/ppx_derivers.1.2.1/opam
deleted file mode 100644
index 3d10814..0000000
--- a/esy.lock/opam/ppx_derivers.1.2.1/opam
+++ /dev/null
@@ -1,23 +0,0 @@
-opam-version: "2.0"
-maintainer: "jeremie@dimino.org"
-authors: ["Jérémie Dimino"]
-license: "BSD-3-Clause"
-homepage: "https://github.com/ocaml-ppx/ppx_derivers"
-bug-reports: "https://github.com/ocaml-ppx/ppx_derivers/issues"
-dev-repo: "git://github.com/ocaml-ppx/ppx_derivers.git"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml"
-  "dune"
-]
-synopsis: "Shared [@@deriving] plugin registry"
-description: """
-Ppx_derivers is a tiny package whose sole purpose is to allow
-ppx_deriving and ppx_type_conv to inter-operate gracefully when linked
-as part of the same ocaml-migrate-parsetree driver."""
-url {
-  src: "https://github.com/ocaml-ppx/ppx_derivers/archive/1.2.1.tar.gz"
-  checksum: "md5=5dc2bf130c1db3c731fe0fffc5648b41"
-}
diff --git a/esy.lock/opam/ppx_deriving.4.4.1/opam b/esy.lock/opam/ppx_deriving.4.4.1/opam
deleted file mode 100644
index 1fd0d53..0000000
--- a/esy.lock/opam/ppx_deriving.4.4.1/opam
+++ /dev/null
@@ -1,36 +0,0 @@
-opam-version: "2.0"
-maintainer: "whitequark <whitequark@whitequark.org>"
-authors: [ "whitequark <whitequark@whitequark.org>" ]
-license: "MIT"
-homepage: "https://github.com/ocaml-ppx/ppx_deriving"
-doc: "https://ocaml-ppx.github.io/ppx_deriving/"
-bug-reports: "https://github.com/ocaml-ppx/ppx_deriving/issues"
-dev-repo: "git+https://github.com/ocaml-ppx/ppx_deriving.git"
-tags: [ "syntax" ]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test & ocaml:version >= "4.03"}
-  ["dune" "build" "@doc" "-p" name "-j" jobs] {with-doc}
-]
-depends: [
-  "dune"     {>= "1.6.3"}
-  "cppo"     {build}
-  "ppxfind"  {build}
-  "ocaml-migrate-parsetree"
-  "ppx_derivers"
-  "ppx_tools"  {>= "4.02.3"}
-  "result"
-  "ounit"      {with-test}
-  "ocaml" {>= "4.02.2" & < "4.11.0"}
-]
-synopsis: "Type-driven code generation for OCaml >=4.02.2"
-description: """
-ppx_deriving provides common infrastructure for generating
-code based on type definitions, and a set of useful plugins
-for common tasks.
-"""
-url {
-  src: "https://github.com/ocaml-ppx/ppx_deriving/archive/v4.4.1.tar.gz"
-  checksum: "sha256=27bc57774724fc4f48775f2011375a5ee1439570204abbf6607761c472757e2f"
-}
diff --git a/esy.lock/opam/ppx_deriving_yojson.3.5.1/opam b/esy.lock/opam/ppx_deriving_yojson.3.5.1/opam
deleted file mode 100644
index a4a4a22..0000000
--- a/esy.lock/opam/ppx_deriving_yojson.3.5.1/opam
+++ /dev/null
@@ -1,35 +0,0 @@
-opam-version: "2.0"
-maintainer: "whitequark <whitequark@whitequark.org>"
-authors: [ "whitequark <whitequark@whitequark.org>" ]
-license: "MIT"
-homepage: "https://github.com/whitequark/ppx_deriving_yojson"
-bug-reports: "https://github.com/whitequark/ppx_deriving_yojson/issues"
-dev-repo: "git://github.com/whitequark/ppx_deriving_yojson.git"
-tags: [ "syntax" "json" ]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name] {with-test}
-]
-depends: [
-  "ocaml" {>= "4.04.0" & < "4.10.0"}
-  "yojson" {>= "1.6.0" & < "2.0.0"}
-  "result"
-  "ppx_deriving" {>= "4.0" & < "5.0"}
-  "ppx_tools"    {build}
-  "ppxfind"      {build}
-  "dune"         {>= "1.2"}
-  "cppo"         {build}
-  "ounit"        {with-test & >= "2.0.0"}
-]
-conflicts: [
-  "ppx_deriving" {= "4.2"}
-]
-synopsis: "JSON codec generator for OCaml"
-description: """
-ppx_deriving_yojson is a ppx_deriving plugin that provides
-a JSON codec generator."""
-url {
-  src: "https://github.com/ocaml-ppx/ppx_deriving_yojson/archive/v3.5.1.tar.gz"
-  checksum: "sha256=aefe9c673f2f0ee2beb9edcca5a4e332a9fe9266c81bc554b8df5cd375568994"
-}
diff --git a/esy.lock/opam/ppx_fields_conv.v0.13.0/opam b/esy.lock/opam/ppx_fields_conv.v0.13.0/opam
deleted file mode 100644
index 717e301..0000000
--- a/esy.lock/opam/ppx_fields_conv.v0.13.0/opam
+++ /dev/null
@@ -1,26 +0,0 @@
-opam-version: "2.0"
-maintainer: "opensource@janestreet.com"
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-homepage: "https://github.com/janestreet/ppx_fields_conv"
-bug-reports: "https://github.com/janestreet/ppx_fields_conv/issues"
-dev-repo: "git+https://github.com/janestreet/ppx_fields_conv.git"
-doc: "https://ocaml.janestreet.com/ocaml-core/latest/doc/ppx_fields_conv/index.html"
-license: "MIT"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml"     {>= "4.04.2"}
-  "base"      {>= "v0.13" & < "v0.14"}
-  "fieldslib" {>= "v0.13" & < "v0.14"}
-  "dune"      {>= "1.5.1"}
-  "ppxlib"    {>= "0.9.0"}
-]
-synopsis: "Generation of accessor and iteration functions for ocaml records"
-description: "
-Part of the Jane Street's PPX rewriters collection.
-"
-url {
-  src: "https://ocaml.janestreet.com/ocaml-core/v0.13/files/ppx_fields_conv-v0.13.0.tar.gz"
-  checksum: "md5=02c84db8ce53d6da9316bacae27d8d15"
-}
diff --git a/esy.lock/opam/ppx_let.v0.13.0/opam b/esy.lock/opam/ppx_let.v0.13.0/opam
deleted file mode 100644
index 34433ac..0000000
--- a/esy.lock/opam/ppx_let.v0.13.0/opam
+++ /dev/null
@@ -1,25 +0,0 @@
-opam-version: "2.0"
-maintainer: "opensource@janestreet.com"
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-homepage: "https://github.com/janestreet/ppx_let"
-bug-reports: "https://github.com/janestreet/ppx_let/issues"
-dev-repo: "git+https://github.com/janestreet/ppx_let.git"
-doc: "https://ocaml.janestreet.com/ocaml-core/latest/doc/ppx_let/index.html"
-license: "MIT"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml"  {>= "4.04.2"}
-  "base"   {>= "v0.13" & < "v0.14"}
-  "dune"   {>= "1.5.1"}
-  "ppxlib" {>= "0.9.0"}
-]
-synopsis: "Monadic let-bindings"
-description: "
-Part of the Jane Street's PPX rewriters collection.
-"
-url {
-  src: "https://ocaml.janestreet.com/ocaml-core/v0.13/files/ppx_let-v0.13.0.tar.gz"
-  checksum: "md5=8b5fab936fffa4b02f786ef18ab0c877"
-}
diff --git a/esy.lock/opam/ppx_sexp_conv.v0.13.0/opam b/esy.lock/opam/ppx_sexp_conv.v0.13.0/opam
deleted file mode 100644
index d40a584..0000000
--- a/esy.lock/opam/ppx_sexp_conv.v0.13.0/opam
+++ /dev/null
@@ -1,26 +0,0 @@
-opam-version: "2.0"
-maintainer: "opensource@janestreet.com"
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-homepage: "https://github.com/janestreet/ppx_sexp_conv"
-bug-reports: "https://github.com/janestreet/ppx_sexp_conv/issues"
-dev-repo: "git+https://github.com/janestreet/ppx_sexp_conv.git"
-doc: "https://ocaml.janestreet.com/ocaml-core/latest/doc/ppx_sexp_conv/index.html"
-license: "MIT"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml"    {>= "4.04.2"}
-  "base"     {>= "v0.13" & < "v0.14"}
-  "sexplib0" {>= "v0.13" & < "v0.14"}
-  "dune"     {>= "1.5.1"}
-  "ppxlib"   {>= "0.9.0"}
-]
-synopsis: "[@@deriving] plugin to generate S-expression conversion functions"
-description: "
-Part of the Jane Street's PPX rewriters collection.
-"
-url {
-  src: "https://ocaml.janestreet.com/ocaml-core/v0.13/files/ppx_sexp_conv-v0.13.0.tar.gz"
-  checksum: "md5=acb33a38721f4a16f71add6afaa315da"
-}
diff --git a/esy.lock/opam/ppx_tools.6.0+4.08.0/opam b/esy.lock/opam/ppx_tools.6.0+4.08.0/opam
deleted file mode 100644
index 0f2f696..0000000
--- a/esy.lock/opam/ppx_tools.6.0+4.08.0/opam
+++ /dev/null
@@ -1,21 +0,0 @@
-opam-version: "2.0"
-synopsis: "Tools for authors of ppx rewriters and other syntactic tools"
-maintainer: "alain.frisch@lexifi.com"
-authors: "Alain Frisch <alain.frisch@lexifi.com>"
-license: "MIT"
-tags: [ "syntax" ]
-homepage: "https://github.com/ocaml-ppx/ppx_tools"
-bug-reports: "https://github.com/ocaml-ppx/ppx_tools/issues"
-dev-repo: "git://github.com/ocaml-ppx/ppx_tools.git"
-build: ["dune" "build" "-p" name "-j" jobs]
-depends: [
-  "ocaml" {>= "4.08.0" & < "4.10"}
-  "dune" {>= "1.6"}
-]
-url {
-  src: "https://github.com/ocaml-ppx/ppx_tools/archive/6.0+4.08.0.tar.gz"
-  checksum: [
-    "md5=801e82103fee7ce1e4a59ab670601952"
-    "sha512=b576398a0dfad76ea9874cc18550bb44078a7e8f8dc0c169a0441f75f3881e458c42316c96d816c6e81d5ef219fac3aa539471f006b46088c9b943ed8af8b947"
-  ]
-}
diff --git a/esy.lock/opam/ppx_tools_versioned.5.2.3/opam b/esy.lock/opam/ppx_tools_versioned.5.2.3/opam
deleted file mode 100644
index dbf79a1..0000000
--- a/esy.lock/opam/ppx_tools_versioned.5.2.3/opam
+++ /dev/null
@@ -1,30 +0,0 @@
-opam-version: "2.0"
-maintainer: "frederic.bour@lakaban.net"
-authors: [
-  "Frédéric Bour <frederic.bour@lakaban.net>"
-  "Alain Frisch <alain.frisch@lexifi.com>"
-]
-license: "MIT"
-homepage: "https://github.com/ocaml-ppx/ppx_tools_versioned"
-bug-reports: "https://github.com/ocaml-ppx/ppx_tools_versioned/issues"
-dev-repo: "git://github.com/ocaml-ppx/ppx_tools_versioned.git"
-tags: [ "syntax" ]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-depends: [
-  "ocaml" {>= "4.02.0"}
-  "dune" {>= "1.0"}
-  "ocaml-migrate-parsetree" {>= "1.4.0"}
-]
-synopsis: "A variant of ppx_tools based on ocaml-migrate-parsetree"
-url {
-  src:
-    "https://github.com/ocaml-ppx/ppx_tools_versioned/archive/5.2.3.tar.gz"
-  checksum: [
-    "md5=b1455e5a4a1bcd9ddbfcf712ccbd4262"
-    "sha512=af20aa0031b9c638537bcdb52c75de95f316ae8fd455a38672a60da5c7c6895cca9dbecd5d56a88c3c40979c6a673a047d986b5b41e1e84b528b7df5d905b9b1"
-  ]
-}
diff --git a/esy.lock/opam/ppxfind.1.4/opam b/esy.lock/opam/ppxfind.1.4/opam
deleted file mode 100644
index 29ed9c6..0000000
--- a/esy.lock/opam/ppxfind.1.4/opam
+++ /dev/null
@@ -1,41 +0,0 @@
-opam-version: "2.0"
-synopsis: "Tool combining ocamlfind and ppx"
-description: """
-Ppxfind is a small command line tool that among other things allows
-to use old style ppx rewriters with jbuilder.
-"""
-maintainer: ["Jérémie Dimino <jeremie@dimino.org>"]
-authors: ["Jérémie Dimino <jeremie@dimino.org>"]
-license: "BSD3"
-homepage: "https://github.com/diml/ppxfind"
-doc: "https://diml.github.io/ppxfind/"
-bug-reports: "https://github.com/diml/ppxfind/issues"
-depends: [
-  "dune" {>= "2.0"}
-  "ocaml-migrate-parsetree" {>= "1.6.0"}
-  "ocamlfind"
-  "ocaml" {>= "4.02.3"}
-]
-build: [
-  ["dune" "subst"] {pinned}
-  [
-    "dune"
-    "build"
-    "-p"
-    name
-    "-j"
-    jobs
-    "@install"
-    "@runtest" {with-test}
-    "@doc" {with-doc}
-  ]
-]
-dev-repo: "git+https://github.com/diml/ppxfind.git"
-url {
-  src:
-    "https://github.com/diml/ppxfind/releases/download/1.4/ppxfind-1.4.tbz"
-  checksum: [
-    "sha256=98291c69f04f7f7b7cdad1b5d786c70fc595559d4663cc04cb711ac132db4971"
-    "sha512=f80b0ee09fb536aa9f154da80d06a1b68ba3b10605fb7338bd6449beb5c8d00e983bf66b4a63e12659ae1410fea56d0a2c4cfd43584616438504628035bcb981"
-  ]
-}
diff --git a/esy.lock/opam/ppxlib.0.12.0/opam b/esy.lock/opam/ppxlib.0.12.0/opam
deleted file mode 100644
index 6a41efc..0000000
--- a/esy.lock/opam/ppxlib.0.12.0/opam
+++ /dev/null
@@ -1,46 +0,0 @@
-opam-version: "2.0"
-maintainer: "opensource@janestreet.com"
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-homepage: "https://github.com/ocaml-ppx/ppxlib"
-bug-reports: "https://github.com/ocaml-ppx/ppxlib/issues"
-dev-repo: "git+https://github.com/ocaml-ppx/ppxlib.git"
-doc: "https://ocaml-ppx.github.io/ppxlib/"
-license: "MIT"
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-]
-run-test: [
-  ["dune" "runtest" "-p" name "-j" jobs] { ocaml:version >= "4.06" & ocaml:version < "4.08" }
-]
-depends: [
-  "ocaml"                   {>= "4.04.1" & < "4.11.0"}
-  "base"                    {>= "v0.11.0"}
-  "dune"                    {>= "1.11"}
-  "ocaml-compiler-libs"     {>= "v0.11.0"}
-  "ocaml-migrate-parsetree" {>= "1.3.1"}
-  "ppx_derivers"            {>= "1.0"}
-  "stdio"                   {>= "v0.11.0"}
-  "ocamlfind"               {with-test}
-  "cinaps"                  {with-test & >= "v0.12.1"}
-]
-synopsis: "Base library and tools for ppx rewriters"
-description: """
-A comprehensive toolbox for ppx development. It features:
-- a OCaml AST / parser / pretty-printer snapshot,to create a full
-   frontend independent of the version of OCaml;
-- a library for library for ppx rewriters in general, and type-driven
-  code generators in particular;
-- a feature-full driver for OCaml AST transformers;
-- a quotation mechanism allowing  to write values representing the
-   OCaml AST in the OCaml syntax;
-- a generator of open recursion classes from type definitions.
-"""
-url {
-  src:
-    "https://github.com/ocaml-ppx/ppxlib/archive/0.12.0.tar.gz"
-  checksum: [
-    "sha256=6b562c9b3b9350777318729921f890850b385c469db60769aafd9371998a2c42"
-    "sha512=2372a7a53d857389978e617c95183289547d53caa5e83a7d867cab347b114b719667bd09eaf2e2334085ef92691a99b42871f6410ffb2977b0b8724014c80a70"
-  ]
-}
diff --git a/esy.lock/opam/ptime.0.8.5/opam b/esy.lock/opam/ptime.0.8.5/opam
deleted file mode 100644
index ed7c8d9..0000000
--- a/esy.lock/opam/ptime.0.8.5/opam
+++ /dev/null
@@ -1,49 +0,0 @@
-opam-version: "2.0"
-maintainer: "Daniel Bünzli <daniel.buenzl i@erratique.ch>"
-authors: ["The ptime programmers"]
-homepage: "https://erratique.ch/software/ptime"
-doc: "https://erratique.ch/software/ptime/doc"
-dev-repo: "git+http://erratique.ch/repos/ptime.git"
-bug-reports: "https://github.com/dbuenzli/ptime/issues"
-tags: [ "time" "posix" "system" "org:erratique" ]
-license: "ISC"
-depends: [
- "ocaml" {>= "4.01.0"}
- "ocamlfind" {build}
- "ocamlbuild" {build}
- "topkg" {build}
- "result"
-]
-depopts: [ "js_of_ocaml" ]
-conflicts: [ "js_of_ocaml" { < "3.3.0" } ]
-build:[[
-   "ocaml" "pkg/pkg.ml" "build"
-   "--pinned" "%{pinned}%"
-   "--with-js_of_ocaml" "%{js_of_ocaml:installed}%" ]]
-
-synopsis: """POSIX time for OCaml"""
-description: """\
-
-Ptime has platform independent POSIX time support in pure OCaml. It
-provides a type to represent a well-defined range of POSIX timestamps
-with picosecond precision, conversion with date-time values,
-conversion with [RFC 3339 timestamps][rfc3339] and pretty printing to a
-human-readable, locale-independent representation.
-
-The additional Ptime_clock library provides access to a system POSIX
-clock and to the system's current time zone offset.
-
-Ptime is not a calendar library.
-
-Ptime depends on the `result` compatibility package. Ptime_clock
-depends on your system library. Ptime_clock's optional JavaScript
-support depends on [js_of_ocaml][jsoo]. Ptime and its libraries are
-distributed under the ISC license.
-
-[rfc3339]: http://tools.ietf.org/html/rfc3339
-[jsoo]: http://ocsigen.org/js_of_ocaml/
-"""
-url {
-archive: "https://erratique.ch/software/ptime/releases/ptime-0.8.5.tbz"
-checksum: "4d48055d623ecf2db792439b3e96a520"
-}
diff --git a/esy.lock/opam/re.1.9.0/opam b/esy.lock/opam/re.1.9.0/opam
deleted file mode 100644
index f798754..0000000
--- a/esy.lock/opam/re.1.9.0/opam
+++ /dev/null
@@ -1,42 +0,0 @@
-opam-version: "2.0"
-
-maintainer: "rudi.grinberg@gmail.com"
-authors: [
-  "Jerome Vouillon"
-  "Thomas Gazagnaire"
-  "Anil Madhavapeddy"
-  "Rudi Grinberg"
-  "Gabriel Radanne"
-]
-license: "LGPL-2.0-only with OCaml-LGPL-linking-exception"
-homepage: "https://github.com/ocaml/ocaml-re"
-bug-reports: "https://github.com/ocaml/ocaml-re/issues"
-dev-repo: "git+https://github.com/ocaml/ocaml-re.git"
-
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-
-depends: [
-  "ocaml" {>= "4.02"}
-  "dune"
-  "ounit" {with-test}
-  "seq"
-]
-
-synopsis: "RE is a regular expression library for OCaml"
-description: """
-Pure OCaml regular expressions with:
-* Perl-style regular expressions (module Re.Perl)
-* Posix extended regular expressions (module Re.Posix)
-* Emacs-style regular expressions (module Re.Emacs)
-* Shell-style file globbing (module Re.Glob)
-* Compatibility layer for OCaml's built-in Str module (module Re.Str)
-"""
-url {
-  src:
-    "https://github.com/ocaml/ocaml-re/releases/download/1.9.0/re-1.9.0.tbz"
-  checksum: "md5=bddaed4f386a22cace7850c9c7dac296"
-}
diff --git a/esy.lock/opam/result.1.5/opam b/esy.lock/opam/result.1.5/opam
deleted file mode 100644
index 671af04..0000000
--- a/esy.lock/opam/result.1.5/opam
+++ /dev/null
@@ -1,22 +0,0 @@
-opam-version: "2.0"
-maintainer: "opensource@janestreet.com"
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-homepage: "https://github.com/janestreet/result"
-dev-repo: "git+https://github.com/janestreet/result.git"
-bug-reports: "https://github.com/janestreet/result/issues"
-license: "BSD-3-Clause"
-build: [["dune" "build" "-p" name "-j" jobs]]
-depends: [
-  "ocaml"
-  "dune" {>= "1.0"}
-]
-synopsis: "Compatibility Result module"
-description: """
-Projects that want to use the new result type defined in OCaml >= 4.03
-while staying compatible with older version of OCaml should use the
-Result module defined in this library."""
-url {
-  src:
-    "https://github.com/janestreet/result/releases/download/1.5/result-1.5.tbz"
-  checksum: "md5=1b82dec78849680b49ae9a8a365b831b"
-}
diff --git a/esy.lock/opam/rresult.0.6.0/opam b/esy.lock/opam/rresult.0.6.0/opam
deleted file mode 100644
index 961ddcd..0000000
--- a/esy.lock/opam/rresult.0.6.0/opam
+++ /dev/null
@@ -1,35 +0,0 @@
-opam-version: "2.0"
-maintainer: "Daniel Bünzli <daniel.buenzl i@erratique.ch>"
-authors: ["Daniel Bünzli <daniel.buenzl i@erratique.ch>"]
-homepage: "http://erratique.ch/software/rresult"
-doc: "http://erratique.ch/software/rresult"
-dev-repo: "git+http://erratique.ch/repos/rresult.git"
-bug-reports: "https://github.com/dbuenzli/rresult/issues"
-tags: [ "result" "error" "declarative" "org:erratique" ]
-license: "ISC"
-depends: [
-   "ocaml" {>= "4.01.0"}
-   "ocamlfind" {build}
-   "ocamlbuild" {build}
-   "topkg" {build}
-   "result"
-]
-build:[[
-  "ocaml" "pkg/pkg.ml" "build"
-          "--pinned" "%{pinned}%" ]]
-
-synopsis: """Result value combinators for OCaml"""
-description: """\
-
-Rresult is an OCaml module for handling computation results and errors
-in an explicit and declarative manner, without resorting to
-exceptions. It defines combinators to operate on the `result` type
-available from OCaml 4.03 in the standard library.
-
-Rresult depends on the compatibility `result` package and is
-distributed under the ISC license.
-"""
-url {
-archive: "http://erratique.ch/software/rresult/releases/rresult-0.6.0.tbz"
-checksum: "aba88cffa29081714468c2c7bcdf7fb1"
-}
diff --git a/esy.lock/opam/seq.base/files/META.seq b/esy.lock/opam/seq.base/files/META.seq
deleted file mode 100644
index 06b95ef..0000000
--- a/esy.lock/opam/seq.base/files/META.seq
+++ /dev/null
@@ -1,4 +0,0 @@
-name="seq"
-version="[distributed with OCaml 4.07 or above]"
-description="dummy backward-compatibility package for iterators"
-requires=""
diff --git a/esy.lock/opam/seq.base/files/seq.install b/esy.lock/opam/seq.base/files/seq.install
deleted file mode 100644
index c4d7020..0000000
--- a/esy.lock/opam/seq.base/files/seq.install
+++ /dev/null
@@ -1,3 +0,0 @@
-lib:[
-  "META.seq" {"META"}
-]
diff --git a/esy.lock/opam/seq.base/opam b/esy.lock/opam/seq.base/opam
deleted file mode 100644
index b33d8c7..0000000
--- a/esy.lock/opam/seq.base/opam
+++ /dev/null
@@ -1,15 +0,0 @@
-opam-version: "2.0"
-maintainer: " "
-authors: " "
-homepage: " "
-depends: [
-  "ocaml" {>= "4.07.0"}
-]
-dev-repo: "git+https://github.com/ocaml/ocaml.git"
-bug-reports: "https://caml.inria.fr/mantis/main_page.php"
-synopsis:
-  "Compatibility package for OCaml's standard iterator type starting from 4.07."
-extra-files: [
-  ["seq.install" "md5=026b31e1df290373198373d5aaa26e42"]
-  ["META.seq" "md5=b33c8a1a6c7ed797816ce27df4855107"]
-]
diff --git a/esy.lock/opam/sexplib.v0.13.0/opam b/esy.lock/opam/sexplib.v0.13.0/opam
deleted file mode 100644
index a618c82..0000000
--- a/esy.lock/opam/sexplib.v0.13.0/opam
+++ /dev/null
@@ -1,29 +0,0 @@
-opam-version: "2.0"
-maintainer: "opensource@janestreet.com"
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-homepage: "https://github.com/janestreet/sexplib"
-bug-reports: "https://github.com/janestreet/sexplib/issues"
-dev-repo: "git+https://github.com/janestreet/sexplib.git"
-doc: "https://ocaml.janestreet.com/ocaml-core/latest/doc/sexplib/index.html"
-license: "MIT"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml"    {>= "4.04.2"}
-  "parsexp"  {>= "v0.13" & < "v0.14"}
-  "sexplib0" {>= "v0.13" & < "v0.14"}
-  "dune"     {>= "1.5.1"}
-  "num"
-]
-synopsis: "Library for serializing OCaml values to and from S-expressions"
-description: "
-Part of Jane Street's Core library
-The Core suite of libraries is an industrial strength alternative to
-OCaml's standard library that was developed by Jane Street, the
-largest industrial user of OCaml.
-"
-url {
-  src: "https://ocaml.janestreet.com/ocaml-core/v0.13/files/sexplib-v0.13.0.tar.gz"
-  checksum: "md5=d3dd8eb6f10e64e6766217bf6b57bc93"
-}
diff --git a/esy.lock/opam/sexplib0.v0.13.0/opam b/esy.lock/opam/sexplib0.v0.13.0/opam
deleted file mode 100644
index 27626b3..0000000
--- a/esy.lock/opam/sexplib0.v0.13.0/opam
+++ /dev/null
@@ -1,26 +0,0 @@
-opam-version: "2.0"
-maintainer: "opensource@janestreet.com"
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-homepage: "https://github.com/janestreet/sexplib0"
-bug-reports: "https://github.com/janestreet/sexplib0/issues"
-dev-repo: "git+https://github.com/janestreet/sexplib0.git"
-doc: "https://ocaml.janestreet.com/ocaml-core/latest/doc/sexplib0/index.html"
-license: "MIT"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml" {>= "4.04.2"}
-  "dune"  {>= "1.5.1"}
-]
-synopsis: "Library containing the definition of S-expressions and some base converters"
-description: "
-Part of Jane Street's Core library
-The Core suite of libraries is an industrial strength alternative to
-OCaml's standard library that was developed by Jane Street, the
-largest industrial user of OCaml.
-"
-url {
-  src: "https://ocaml.janestreet.com/ocaml-core/v0.13/files/sexplib0-v0.13.0.tar.gz"
-  checksum: "md5=f8a715dffda5599cfae0cb4031d57abe"
-}
diff --git a/esy.lock/opam/stdio.v0.13.0/opam b/esy.lock/opam/stdio.v0.13.0/opam
deleted file mode 100644
index 42d6f14..0000000
--- a/esy.lock/opam/stdio.v0.13.0/opam
+++ /dev/null
@@ -1,27 +0,0 @@
-opam-version: "2.0"
-maintainer: "opensource@janestreet.com"
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-homepage: "https://github.com/janestreet/stdio"
-bug-reports: "https://github.com/janestreet/stdio/issues"
-dev-repo: "git+https://github.com/janestreet/stdio.git"
-doc: "https://ocaml.janestreet.com/ocaml-core/latest/doc/stdio/index.html"
-license: "MIT"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml" {>= "4.04.2"}
-  "base"  {>= "v0.13" & < "v0.14"}
-  "dune"  {>= "1.5.1"}
-]
-synopsis: "Standard IO library for OCaml"
-description: "
-Stdio implements simple input/output functionalities for OCaml.
-
-It re-exports the input/output functions of the OCaml standard
-libraries using a more consistent API.
-"
-url {
-  src: "https://ocaml.janestreet.com/ocaml-core/v0.13/files/stdio-v0.13.0.tar.gz"
-  checksum: "md5=48ef28512ddd51ff9885649dd1fab91d"
-}
diff --git a/esy.lock/opam/stdlib-shims.0.1.0/opam b/esy.lock/opam/stdlib-shims.0.1.0/opam
deleted file mode 100644
index 5839c43..0000000
--- a/esy.lock/opam/stdlib-shims.0.1.0/opam
+++ /dev/null
@@ -1,27 +0,0 @@
-opam-version: "2.0"
-maintainer: "The stdlib-shims programmers"
-authors: "The stdlib-shims programmers"
-homepage: "https://github.com/ocaml/stdlib-shims"
-doc: "https://ocaml.github.io/stdlib-shims/"
-dev-repo: "git+https://github.com/ocaml/stdlib-shims.git"
-bug-reports: "https://github.com/ocaml/stdlib-shims/issues"
-tags: ["stdlib" "compatibility" "org:ocaml"]
-license: ["typeof OCaml system"]
-depends: [
-  "dune"
-  "ocaml" {>= "4.02.3"}
-]
-build: [ "dune" "build" "-p" name "-j" jobs ]
-synopsis: "Backport some of the new stdlib features to older compiler"
-description: """
-Backport some of the new stdlib features to older compiler,
-such as the Stdlib module.
-
-This allows projects that require compatibility with older compiler to
-use these new features in their code.
-"""
-url {
-  src:
-    "https://github.com/ocaml/stdlib-shims/releases/download/0.1.0/stdlib-shims-0.1.0.tbz"
-  checksum: "md5=12b5704eed70c6bff5ac39a16db1425d"
-}
diff --git a/esy.lock/opam/stringext.1.6.0/opam b/esy.lock/opam/stringext.1.6.0/opam
deleted file mode 100644
index 5242fe3..0000000
--- a/esy.lock/opam/stringext.1.6.0/opam
+++ /dev/null
@@ -1,32 +0,0 @@
-opam-version: "2.0"
-maintainer: "rudi.grinberg@gmail.com"
-authors: "Rudi Grinberg"
-license: "MIT"
-homepage: "https://github.com/rgrinberg/stringext"
-bug-reports: "https://github.com/rgrinberg/stringext/issues"
-depends: [
-  "ocaml" {>= "4.02.3"}
-  "dune" {>= "1.0"}
-  "ounit" {with-test}
-  "qtest" {with-test & >= "2.2"}
-  "base-bytes"
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-dev-repo: "git+https://github.com/rgrinberg/stringext.git"
-synopsis: "Extra string functions for OCaml"
-description: """
-Extra string functions for OCaml. Mainly splitting. All functions are in the
-Stringext module.
-"""
-url {
-  src:
-    "https://github.com/rgrinberg/stringext/releases/download/1.6.0/stringext-1.6.0.tbz"
-  checksum: [
-    "sha256=db41f5d52e9eab17615f110b899dfeb27dd7e7f89cd35ae43827c5119db206ea"
-    "sha512=d8ebe40f42b598a9bd99f1ef4b00ba93458385a4accd121af66a0bf3b3f8d7135f576740adf1a43081dd409977c2219fd4bdbb5b3d1308890d301d553ed49900"
-  ]
-}
diff --git a/esy.lock/opam/tls.0.10.5/opam b/esy.lock/opam/tls.0.10.5/opam
deleted file mode 100644
index 65872f2..0000000
--- a/esy.lock/opam/tls.0.10.5/opam
+++ /dev/null
@@ -1,77 +0,0 @@
-opam-version: "2.0"
-name:         "tls"
-homepage:     "https://github.com/mirleft/ocaml-tls"
-dev-repo:     "git+https://github.com/mirleft/ocaml-tls.git"
-bug-reports:  "https://github.com/mirleft/ocaml-tls/issues"
-doc:          "https://mirleft.github.io/ocaml-tls/doc"
-author:       ["David Kaloper <david@numm.org>" "Hannes Mehnert <hannes@mehnert.org>"]
-maintainer:   ["Hannes Mehnert <hannes@mehnert.org>" "David Kaloper <david@numm.org>"]
-license:      "BSD2"
-
-build: [
-  [ "ocaml" "pkg/pkg.ml" "build" "--pinned" "%{pinned}%" "--tests" "false"
-    "--with-lwt" "%{lwt+ptime:installed}%"
-    "--with-mirage" "%{mirage-flow+mirage-kv+mirage-clock+ptime:installed}%" ]
-  ["ocaml" "pkg/pkg.ml" "build" "--pinned" "%{pinned}%" "--tests" "true"
-    "--with-lwt" "%{lwt+ptime:installed}%"
-    "--with-mirage" "%{mirage-flow+mirage-kv+mirage-clock+ptime:installed}%" ] {with-test}
-  ["ocaml" "pkg/pkg.ml" "test"] {with-test}
-]
-
-depends: [
-  "ocaml" {>= "4.04.2"}
-  "ocamlfind" {build}
-  "ocamlbuild" {build}
-  "topkg" {build}
-  "ppx_sexp_conv" {< "v0.14"}
-  "ppx_deriving"
-  "ppx_cstruct" {>= "3.0.0"}
-  "cstruct" {>= "4.0.0"}
-  "cstruct-sexp"
-  "sexplib" {< "v0.14"}
-  "nocrypto" {>= "0.5.4"}
-  "x509" {>= "0.7.0" & < "0.9.0"}
-  "domain-name" {>= "0.3.0"}
-  "fmt"
-  "cstruct-unix" {with-test & >= "3.0.0"}
-  "ounit" {with-test}
-]
-depopts: [
-  "lwt"
-  "mirage-flow"
-  "mirage-kv"
-  "mirage-clock"
-  "ptime"
-]
-conflicts: [
-  "lwt" {<"2.4.8"}
-  "lwt" {with-test & >= "5.0.0"}
-  "mirage-kv" {<"3.0.0"}
-  "mirage-flow" {<"2.0.0"}
-  "mirage-clock" {<"3.0.0"}
-  "sexplib" {= "v0.9.0"}
-  "ppx_sexp_conv" {= "v0.11.0"}
-  "ptime" {< "0.8.1"}
-]
-
-tags: [ "org:mirage"]
-synopsis: "Transport Layer Security purely in OCaml"
-description: """\
-
-Transport Layer Security (TLS) is probably the most widely deployed security
-protocol on the Internet. It provides communication privacy to prevent
-eavesdropping, tampering, and message forgery. Furthermore, it optionally
-provides authentication of the involved endpoints. TLS is commonly deployed for
-securing web services ([HTTPS](http://tools.ietf.org/html/rfc2818)), emails,
-virtual private networks, and wireless networks.
-
-TLS uses asymmetric cryptography to exchange a symmetric key, and optionally
-authenticate (using X.509) either or both endpoints. It provides algorithmic
-agility, which means that the key exchange method, symmetric encryption
-algorithm, and hash algorithm are negotiated.
-
-Read [further](https://nqsb.io) and our [Usenix Security 2015 paper](https://usenix15.nqsb.io)."""
-url {
-archive: "https://github.com/mirleft/ocaml-tls/releases/download/v0.10.5/tls-0.10.5.tbz"
-checksum: "57d9477ea79080e9d2485007289cbc5f"
-}
\ No newline at end of file
diff --git a/esy.lock/opam/topkg.1.0.1/opam b/esy.lock/opam/topkg.1.0.1/opam
deleted file mode 100644
index 77ae1f4..0000000
--- a/esy.lock/opam/topkg.1.0.1/opam
+++ /dev/null
@@ -1,48 +0,0 @@
-opam-version: "2.0"
-maintainer: "Daniel Bünzli <daniel.buenzl i@erratique.ch>"
-authors: ["Daniel Bünzli <daniel.buenzl i@erratique.ch>"]
-homepage: "http://erratique.ch/software/topkg"
-doc: "http://erratique.ch/software/topkg/doc"
-license: "ISC"
-dev-repo: "git+http://erratique.ch/repos/topkg.git"
-bug-reports: "https://github.com/dbuenzli/topkg/issues"
-tags: ["packaging" "ocamlbuild" "org:erratique"]
-depends: [
-  "ocaml" {>= "4.03.0"}
-  "ocamlfind" {build & >= "1.6.1"}
-  "ocamlbuild" ]
-build: [[
-  "ocaml" "pkg/pkg.ml" "build"
-          "--pkg-name" name
-          "--dev-pkg" "%{pinned}%" ]]
-synopsis: """The transitory OCaml software packager"""
-description: """\
-
-Topkg is a packager for distributing OCaml software. It provides an
-API to describe the files a package installs in a given build
-configuration and to specify information about the package's
-distribution, creation and publication procedures.
-
-The optional topkg-care package provides the `topkg` command line tool
-which helps with various aspects of a package's life cycle: creating
-and linting a distribution, releasing it on the WWW, publish its
-documentation, add it to the OCaml opam repository, etc.
-
-Topkg is distributed under the ISC license and has **no**
-dependencies. This is what your packages will need as a *build*
-dependency.
-
-Topkg-care is distributed under the ISC license it depends on
-[fmt][fmt], [logs][logs], [bos][bos], [cmdliner][cmdliner],
-[webbrowser][webbrowser] and `opam-format`.
-
-[fmt]: http://erratique.ch/software/fmt
-[logs]: http://erratique.ch/software/logs
-[bos]: http://erratique.ch/software/bos
-[cmdliner]: http://erratique.ch/software/cmdliner
-[webbrowser]: http://erratique.ch/software/webbrowser
-"""
-url {
-archive: "http://erratique.ch/software/topkg/releases/topkg-1.0.1.tbz"
-checksum: "16b90e066d8972a5ef59655e7c28b3e9"
-}
diff --git a/esy.lock/opam/tyxml.4.3.0/opam b/esy.lock/opam/tyxml.4.3.0/opam
deleted file mode 100644
index 93872f8..0000000
--- a/esy.lock/opam/tyxml.4.3.0/opam
+++ /dev/null
@@ -1,45 +0,0 @@
-opam-version: "2.0"
-maintainer: "dev@ocsigen.org"
-homepage: "https://github.com/ocsigen/tyxml/"
-bug-reports: "https://github.com/ocsigen/tyxml/issues"
-doc: "https://ocsigen.org/tyxml/manual/"
-dev-repo: "git+https://github.com/ocsigen/tyxml.git"
-license: "LGPL-2.1-only with OCaml-LGPL-linking-exception"
-
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-
-depends: [
-  "ocaml" {>= "4.02"}
-  "re" {>= "1.5.0"}
-  ("ocaml" {>= "4.07"} | "re" {>= "1.8.0"})
-  "dune"
-  "alcotest" {with-test}
-  "seq"
-  "uutf" {>= "1.0.0"}
-]
-
-synopsis:"TyXML is a library for building correct HTML and SVG documents"
-description:"""
-TyXML provides a set of convenient combinators that uses the OCaml
-type system to ensure the validity of the generated documents. TyXML
-can be used with any representation of HTML and SVG: the textual one,
-provided directly by this package, or DOM trees (`js_of_ocaml-tyxml`)
-virtual DOM (`virtual-dom`) and reactive or replicated trees
-(`eliom`). You can also create your own representation and use it to
-instantiate a new set of combinators.
-
-```ocaml
-open Tyxml
-let to_ocaml = Html.(a ~a:[a_href "ocaml.org"] [txt "OCaml!"])
-```
-"""
-authors: "The ocsigen team"
-url {
-  src:
-    "https://github.com/ocsigen/tyxml/releases/download/4.3.0/tyxml-4.3.0.tbz"
-  checksum: "md5=fd834a567f813bf447cab5f4c3a723e2"
-}
diff --git a/esy.lock/opam/uchar.0.0.2/opam b/esy.lock/opam/uchar.0.0.2/opam
deleted file mode 100644
index 428d7aa..0000000
--- a/esy.lock/opam/uchar.0.0.2/opam
+++ /dev/null
@@ -1,36 +0,0 @@
-opam-version: "2.0"
-maintainer: "Daniel Bünzli <daniel.buenzl i@erratique.ch>"
-authors: ["Daniel Bünzli <daniel.buenzl i@erratique.ch>"]
-homepage: "http://ocaml.org"
-doc: "https://ocaml.github.io/uchar/"
-dev-repo: "git+https://github.com/ocaml/uchar.git"
-bug-reports: "https://github.com/ocaml/uchar/issues"
-tags: [ "text" "character" "unicode" "compatibility" "org:ocaml.org" ]
-license: "typeof OCaml system"
-depends: [
-  "ocaml" {>= "3.12.0"}
-  "ocamlbuild" {build}
-]
-build: [
-  ["ocaml" "pkg/git.ml"]
-  [
-    "ocaml"
-    "pkg/build.ml"
-    "native=%{ocaml:native}%"
-    "native-dynlink=%{ocaml:native-dynlink}%"
-  ]
-]
-synopsis: "Compatibility library for OCaml's Uchar module"
-description: """
-The `uchar` package provides a compatibility library for the
-[`Uchar`][1] module introduced in OCaml 4.03.
-
-The `uchar` package is distributed under the license of the OCaml
-compiler. See [LICENSE](LICENSE) for details.
-
-[1]: http://caml.inria.fr/pub/docs/manual-ocaml/libref/Uchar.html"""
-url {
-  src:
-    "https://github.com/ocaml/uchar/releases/download/v0.0.2/uchar-0.0.2.tbz"
-  checksum: "md5=c9ba2c738d264c420c642f7bb1cf4a36"
-}
diff --git a/esy.lock/opam/uri-sexp.3.1.0/opam b/esy.lock/opam/uri-sexp.3.1.0/opam
deleted file mode 100644
index 01b8f87..0000000
--- a/esy.lock/opam/uri-sexp.3.1.0/opam
+++ /dev/null
@@ -1,33 +0,0 @@
-opam-version: "2.0"
-maintainer: "anil@recoil.org"
-authors: ["Anil Madhavapeddy" "David Sheets" "Rudi Grinberg"]
-license: "ISC"
-tags: ["url" "uri" "org:mirage" "org:xapi-project"]
-homepage: "https://github.com/mirage/ocaml-uri"
-bug-reports: "https://github.com/mirage/ocaml-uri/issues"
-dev-repo: "git+https://github.com/mirage/ocaml-uri.git"
-doc: "https://mirage.github.io/ocaml-uri/"
-synopsis: "An RFC3986 URI/URL parsing library"
-description: """
-ocaml-uri with sexp support
-"""
-depends: [
-  "uri" {= version}
-  "dune" {>= "1.2.0"}
-  "ppx_sexp_conv" {>= "v0.9.0"}
-  "sexplib0"
-  "ounit" {with-test}
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-url {
-  src:
-    "https://github.com/mirage/ocaml-uri/releases/download/v3.1.0/uri-v3.1.0.tbz"
-  checksum: [
-    "sha256=c452823fd870cf7cffe51aef3e9ca646a382dc6f87282f2b16bfe30a7515ac43"
-    "sha512=c015576bb077fd243022bcd8804e628d23a253dcd8bbdda8dc2a57e86cfeb9fd629087ec7d7e23dc71dd7cd137450ca2c5ecf8fb7d184ec9d1d4e41f6f83ee38"
-  ]
-}
diff --git a/esy.lock/opam/uri.3.1.0/opam b/esy.lock/opam/uri.3.1.0/opam
deleted file mode 100644
index 73cce66..0000000
--- a/esy.lock/opam/uri.3.1.0/opam
+++ /dev/null
@@ -1,35 +0,0 @@
-opam-version: "2.0"
-maintainer: "anil@recoil.org"
-authors: ["Anil Madhavapeddy" "David Sheets" "Rudi Grinberg"]
-license: "ISC"
-tags: ["url" "uri" "org:mirage" "org:xapi-project"]
-homepage: "https://github.com/mirage/ocaml-uri"
-bug-reports: "https://github.com/mirage/ocaml-uri/issues"
-dev-repo: "git+https://github.com/mirage/ocaml-uri.git"
-doc: "https://mirage.github.io/ocaml-uri/"
-synopsis: "An RFC3986 URI/URL parsing library"
-description: """
-This is an OCaml implementation of the [RFC3986](http://tools.ietf.org/html/rfc3986) specification 
-for parsing URI or URLs.
-"""
-depends: [
-  "ocaml" {>= "4.04.0"}
-  "dune" {>= "1.2.0"}
-  "ounit" {with-test & >= "1.0.2"}
-  "ppx_sexp_conv" {with-test & >= "v0.9.0"}
-  "re" {>= "1.9.0"}
-  "stringext" {>= "1.4.0"}
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-url {
-  src:
-    "https://github.com/mirage/ocaml-uri/releases/download/v3.1.0/uri-v3.1.0.tbz"
-  checksum: [
-    "sha256=c452823fd870cf7cffe51aef3e9ca646a382dc6f87282f2b16bfe30a7515ac43"
-    "sha512=c015576bb077fd243022bcd8804e628d23a253dcd8bbdda8dc2a57e86cfeb9fd629087ec7d7e23dc71dd7cd137450ca2c5ecf8fb7d184ec9d1d4e41f6f83ee38"
-  ]
-}
diff --git a/esy.lock/opam/uutf.1.0.2/opam b/esy.lock/opam/uutf.1.0.2/opam
deleted file mode 100644
index 3a9f567..0000000
--- a/esy.lock/opam/uutf.1.0.2/opam
+++ /dev/null
@@ -1,40 +0,0 @@
-opam-version: "2.0"
-maintainer: "Daniel Bünzli <daniel.buenzl i@erratique.ch>"
-authors: ["Daniel Bünzli <daniel.buenzl i@erratique.ch>"]
-homepage: "http://erratique.ch/software/uutf"
-doc: "http://erratique.ch/software/uutf/doc/Uutf"
-dev-repo: "git+http://erratique.ch/repos/uutf.git"
-bug-reports: "https://github.com/dbuenzli/uutf/issues"
-tags: [ "unicode" "text" "utf-8" "utf-16" "codec" "org:erratique" ]
-license: "ISC"
-depends: [
-  "ocaml" {>= "4.01.0"}
-  "ocamlfind" {build}
-  "ocamlbuild" {build}
-  "topkg" {build}
-  "uchar"
-]
-depopts: ["cmdliner"]
-conflicts: ["cmdliner" { < "0.9.6"} ]
-build: [[
-  "ocaml" "pkg/pkg.ml" "build"
-          "--pinned" "%{pinned}%"
-          "--with-cmdliner" "%{cmdliner:installed}%" ]]
-synopsis: """Non-blocking streaming Unicode codec for OCaml"""
-description: """\
-
-Uutf is a non-blocking streaming codec to decode and encode the UTF-8,
-UTF-16, UTF-16LE and UTF-16BE encoding schemes. It can efficiently
-work character by character without blocking on IO. Decoders perform
-character position tracking and support newline normalization.
-
-Functions are also provided to fold over the characters of UTF encoded
-OCaml string values and to directly encode characters in OCaml
-Buffer.t values.
-
-Uutf has no dependency and is distributed under the ISC license.
-"""
-url {
-archive: "http://erratique.ch/software/uutf/releases/uutf-1.0.2.tbz"
-checksum: "a7c542405a39630c689a82bd7ef2292c"
-}
diff --git a/esy.lock/opam/x509.0.8.1/opam b/esy.lock/opam/x509.0.8.1/opam
deleted file mode 100644
index b2c9f0e..0000000
--- a/esy.lock/opam/x509.0.8.1/opam
+++ /dev/null
@@ -1,51 +0,0 @@
-opam-version: "2.0"
-maintainer: [
-  "Hannes Mehnert <hannes@mehnert.org>"
-]
-authors: [
-  "Hannes Mehnert <hannes@mehnert.org>"
-  "David Kaloper <dk505@cam.ac.uk>"
-]
-license: "BSD2"
-tags: "org:mirage"
-homepage: "https://github.com/mirleft/ocaml-x509"
-doc: "https://mirleft.github.io/ocaml-x509/doc"
-bug-reports: "https://github.com/mirleft/ocaml-x509/issues"
-depends: [
-  "ocaml" {>= "4.05.0"}
-  "dune" {>= "1.2"}
-  "cstruct" {>= "4.0.0"}
-  "asn1-combinators" {>= "0.2.0"}
-  "ptime"
-  "nocrypto" {>= "0.5.3"}
-  "rresult"
-  "fmt" {>= "0.8.7"}
-  "alcotest" {with-test}
-  "cstruct-unix" {with-test & >= "3.0.0"}
-  "gmap" {>= "0.3.0"}
-  "domain-name" {>= "0.3.0"}
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-dev-repo: "git+https://github.com/mirleft/ocaml-x509.git"
-synopsis: "Public Key Infrastructure (RFC 5280, PKCS) purely in OCaml"
-description: """
-X.509 is a public key infrastructure used mostly on the Internet.  It consists
-of certificates which include public keys and identifiers, signed by an
-authority. Authorities must be exchanged over a second channel to establish the
-trust relationship. This library implements most parts of RFC5280 and RFC6125.
-The Public Key Cryptography Standards (PKCS) defines encoding and decoding
-(in ASN.1 DER and PEM format), which is also implemented by this library -
-namely PKCS 1, PKCS 7, PKCS 8, PKCS 9 and PKCS 10.
-"""
-url {
-  src:
-    "https://github.com/mirleft/ocaml-x509/releases/download/v0.8.1/x509-v0.8.1.tbz"
-  checksum: [
-    "sha256=a586b925fe7e84b1a5833dacf66a920967683cf8aab21d7291a3074630e57880"
-    "sha512=e355420d608eb7840a64e0fe673cef459fc377163801ce3cca4f0dfb4b3f294c6d2273442b475aa01b4660362c987e81c363de2de602a1a38ab3b143118b9cf1"
-  ]
-}
diff --git a/esy.lock/opam/yojson.1.7.0/opam b/esy.lock/opam/yojson.1.7.0/opam
deleted file mode 100644
index ffef068..0000000
--- a/esy.lock/opam/yojson.1.7.0/opam
+++ /dev/null
@@ -1,38 +0,0 @@
-opam-version: "2.0"
-maintainer: "martin@mjambon.com"
-authors: ["Martin Jambon"]
-homepage: "https://github.com/ocaml-community/yojson"
-bug-reports: "https://github.com/ocaml-community/yojson/issues"
-dev-repo: "git+https://github.com/ocaml-community/yojson.git"
-doc: "https://ocaml-community.github.io/yojson/"
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-]
-run-test: [["dune" "runtest" "-p" name "-j" jobs]]
-depends: [
-  "ocaml" {>= "4.02.3"}
-  "dune"
-  "cppo" {build}
-  "easy-format"
-  "biniou" {>= "1.2.0"}
-  "alcotest" {with-test & >= "0.8.5"}
-]
-synopsis:
-  "Yojson is an optimized parsing and printing library for the JSON format"
-description: """
-Yojson is an optimized parsing and printing library for the JSON format.
-
-It addresses a few shortcomings of json-wheel including 2x speedup,
-polymorphic variants and optional syntax for tuples and variants.
-
-ydump is a pretty-printing command-line program provided with the
-yojson package.
-
-The program atdgen can be used to derive OCaml-JSON serializers and
-deserializers from type definitions."""
-url {
-  src:
-    "https://github.com/ocaml-community/yojson/releases/download/1.7.0/yojson-1.7.0.tbz"
-  checksum: "md5=b89d39ca3f8c532abe5f547ad3b8f84d"
-}
diff --git a/esy.lock/opam/zarith.1.9.1/opam b/esy.lock/opam/zarith.1.9.1/opam
deleted file mode 100644
index 765a409..0000000
--- a/esy.lock/opam/zarith.1.9.1/opam
+++ /dev/null
@@ -1,47 +0,0 @@
-opam-version: "2.0"
-maintainer: "Xavier Leroy <xavier.leroy@inria.fr>"
-authors: [
-  "Antoine Miné"
-  "Xavier Leroy"
-  "Pascal Cuoq"
-]
-homepage: "https://github.com/ocaml/Zarith"
-bug-reports: "https://github.com/ocaml/Zarith/issues"
-dev-repo: "git+https://github.com/ocaml/Zarith.git"
-build: [
-  ["./configure"] {os != "openbsd" & os != "freebsd" & os != "macos"}
-  [
-    "sh"
-    "-exc"
-    "LDFLAGS=\"$LDFLAGS -L/usr/local/lib\" CFLAGS=\"$CFLAGS -I/usr/local/include\" ./configure"
-  ] {os = "openbsd" | os = "freebsd"}
-  [
-    "sh"
-    "-exc"
-    "LDFLAGS=\"$LDFLAGS -L/opt/local/lib -L/usr/local/lib\" CFLAGS=\"$CFLAGS -I/opt/local/include -I/usr/local/include\" ./configure"
-  ] {os = "macos"}
-  [make]
-]
-install: [
-  [make "install"]
-]
-depends: [
-  "ocaml"
-  "ocamlfind" {build}
-  "conf-gmp"
-  "conf-perl" {build}
-]
-synopsis:
-  "Implements arithmetic and logical operations over arbitrary-precision integers"
-description: """
-The Zarith library implements arithmetic and logical operations over
-arbitrary-precision integers. It uses GMP to efficiently implement
-arithmetic over big integers. Small integers are represented as Caml
-unboxed integers, for speed and space economy."""
-url {
-  src: "https://github.com/ocaml/Zarith/archive/release-1.9.1.tar.gz"
-  checksum: [
-    "md5=af41b7534a4c91a8f774f04e307c1c66"
-    "sha512=e77620c66a59d35811acfc45c7ef3f0d50d3042194654b1f5b652a2ed5fb9d5f88e9173222e5ced286c61854434da05a4d96668089faa66ff2917afa677fc32f"
-  ]
-}
diff --git a/esy.lock/overrides/7e96a8d6f059163f08fee9f6b9790b0b/.gitignore b/esy.lock/overrides/7e96a8d6f059163f08fee9f6b9790b0b/.gitignore
deleted file mode 100644
index 678a8a2..0000000
--- a/esy.lock/overrides/7e96a8d6f059163f08fee9f6b9790b0b/.gitignore
+++ /dev/null
@@ -1,3 +0,0 @@
-node_modules
-_esy
-*~
\ No newline at end of file
diff --git a/esy.lock/overrides/7e96a8d6f059163f08fee9f6b9790b0b/package.json b/esy.lock/overrides/7e96a8d6f059163f08fee9f6b9790b0b/package.json
deleted file mode 100644
index b63dc31..0000000
--- a/esy.lock/overrides/7e96a8d6f059163f08fee9f6b9790b0b/package.json
+++ /dev/null
@@ -1,39 +0,0 @@
-{
-  "name": "esy-gmp",
-  "version": "6.1.2001",
-  "description": "GMP packaged for esy",
-  "source": "https://gmplib.org/download/gmp/gmp-6.1.2.tar.xz#9dc6981197a7d92f339192eea974f5eca48fcffe",
-  "override": {
-    "buildsInSource": true,
-    "build": [
-      "find ./ -exec touch -t 200905010101 {} +",
-      "./configure --enable-fat --prefix=#{self.install} #{os == 'windows' ? '--host x86_64-w64-mingw32' : ''} --with-pic",
-      "make"
-    ],
-    "install": [
-      "make install"
-    ],
-    "exportedEnv": {
-      "LDFLAGS": {
-        "scope": "global",
-        "val": "-L#{self.lib} -lgmp"
-      },
-      "CPPFLAGS": {
-        "scope": "global",
-        "val": "-I#{self.install / 'include'}"
-      },
-      "LD_LIBRARY_PATH": {
-        "scope": "global",
-        "val": "#{self.lib}:$LD_LIBRARY_PATH"
-      },
-      "LIBRARY_PATH": {
-        "scope": "global",
-        "val": "#{self.lib}:$LIBRARY_PATH"
-      },
-      "CPATH": {
-        "scope": "global",
-        "val": "#{self.install / 'include'}:$CPATH"
-      }
-    }
-  }
-}
diff --git a/esy.lock/overrides/7e96a8d6f059163f08fee9f6b9790b0b/test/package.json b/esy.lock/overrides/7e96a8d6f059163f08fee9f6b9790b0b/test/package.json
deleted file mode 100644
index 66525aa..0000000
--- a/esy.lock/overrides/7e96a8d6f059163f08fee9f6b9790b0b/test/package.json
+++ /dev/null
@@ -1,17 +0,0 @@
-{
-  "name": "esy-gmp-test",
-  "description": "For manual testing only",
-  "version": "0.1.0",
-  "description": "GMP packaged for esy",
-  "license": "MIT",
-  "esy": {
-    "buildsInSource": true,
-    "build": [
-      "#{os == 'windows' ? 'x86_64-w64-mingw32-gcc': 'gcc'} $CFLAGS -o testinggmp test.c $LDFLAGS"
-    ],
-    "install": "cp testinggmp #{self.bin}"
-  },
-  "dependencies": {
-    "gmp": "esy-packages/esy-gmp#e2a8fab86e6ff2b26637b3249ee149d29b3430dd"
-  }
-}
diff --git a/esy.lock/overrides/7e96a8d6f059163f08fee9f6b9790b0b/test/test.c b/esy.lock/overrides/7e96a8d6f059163f08fee9f6b9790b0b/test/test.c
deleted file mode 100644
index 7162f62..0000000
--- a/esy.lock/overrides/7e96a8d6f059163f08fee9f6b9790b0b/test/test.c
+++ /dev/null
@@ -1,14 +0,0 @@
-#include <gmp.h>
-#include <stdlib.h>
-#include <stdio.h>
-
-int main() {
-    mpz_t i, j, k;
-    mpz_init_set_str (i, "1a", 16);
-    mpz_init (j);
-    mpz_init (k);
-    mpz_sqrtrem (j, k, i);
-    if (mpz_get_si (j) != 5 || mpz_get_si (k) != 1) abort();
-    printf("%s\n", "Works as expected");
-    return 0;
-}
diff --git a/esy.lock/overrides/opam__s__num_opam__c__1.3_opam_override/files/num-1.3.patch b/esy.lock/overrides/opam__s__num_opam__c__1.3_opam_override/files/num-1.3.patch
deleted file mode 100644
index dad75fa..0000000
--- a/esy.lock/overrides/opam__s__num_opam__c__1.3_opam_override/files/num-1.3.patch
+++ /dev/null
@@ -1,58 +0,0 @@
-diff --git a/src/Makefile b/src/Makefile
-index 8ad0e2c..d41d63c 100644
---- a/src/Makefile
-+++ b/src/Makefile
-@@ -1,16 +1,16 @@
--OCAMLC=ocamlc
--OCAMLOPT=ocamlopt
--OCAMLDEP=ocamldep
--OCAMLMKLIB=ocamlmklib
--OCAMLFIND=ocamlfind
-+OCAMLC=$(shell which ocamlc)
-+OCAMLOPT=$(shell which ocamlopt)
-+OCAMLDEP=$(shell which ocamldep)
-+OCAMLMKLIB=$(shell which ocamlmklib)
-+OCAMLFIND=$(shell which ocamlfind)
- INSTALL_DATA=install -m 644
- INSTALL_DLL=install
- INSTALL_DIR=install -d
- STDLIBDIR=$(shell $(OCAMLC) -where)
- DESTDIR ?=
- 
--include $(STDLIBDIR)/Makefile.config
- 
-+include $(STDLIBDIR)/Makefile.config
- ifeq "$(filter i386 amd64 arm64 power,$(ARCH))" ""
- # Unsupported architecture
- BNG_ARCH=generic
-@@ -86,14 +86,14 @@ endif
- VERSION=$(shell sed -ne 's/^ *version *: *"\([^"]*\)".*$$/\1/p' ../num.opam)
- 
- install:
--	$(INSTALL_DIR) $(DESTDIR)$(STDLIBDIR)
-+	$(INSTALL_DIR) $(LIBDIR)
- 	sed -e 's/%%VERSION%%/$(VERSION)/g' META.in > META
- 	$(OCAMLFIND) install num META
- 	rm -f META
--	$(INSTALL_DATA) $(TOINSTALL) $(DESTDIR)$(STDLIBDIR)
-+	$(INSTALL_DATA) $(TOINSTALL) $(LIBDIR)
- ifeq "$(SUPPORTS_SHARED_LIBRARIES)" "true"
--	$(INSTALL_DIR) $(DESTDIR)$(STDLIBDIR)/stublibs
--	$(INSTALL_DLL) $(TOINSTALL_STUBS) $(DESTDIR)$(STDLIBDIR)/stublibs
-+	$(INSTALL_DIR) $(LIBDIR)/stublibs
-+	$(INSTALL_DLL) $(TOINSTALL_STUBS) $(LIBDIR)/stublibs
- endif
- 
- findlib-install:
-@@ -105,9 +105,9 @@ findlib-uninstall:
- 	$(OCAMLFIND) remove num
- 
- uninstall: findlib-uninstall
--	cd $(DESTDIR)$(STDLIBDIR) && rm -f $(TOINSTALL)
-+	cd $(LIBDIR) && rm -f $(TOINSTALL)
- ifeq "$(SUPPORTS_SHARED_LIBRARIES)" "true"
--	cd $(DESTDIR)$(STDLIBDIR)/stublibs && rm -f $(TOINSTALL_STUBS)
-+	cd $(LIBDIR)/stublibs && rm -f $(TOINSTALL_STUBS)
- endif
- 
- clean:
diff --git a/esy.lock/overrides/opam__s__num_opam__c__1.3_opam_override/package.json b/esy.lock/overrides/opam__s__num_opam__c__1.3_opam_override/package.json
deleted file mode 100644
index 4199a64..0000000
--- a/esy.lock/overrides/opam__s__num_opam__c__1.3_opam_override/package.json
+++ /dev/null
@@ -1,25 +0,0 @@
-{
-  "buildsInSource": true,
-  "build": [
-    [
-      "make"
-    ]
-  ],
-  "install": [
-    [
-      "make",
-      "LIBDIR=#{self.install / 'lib'}",
-      "findlib-install"
-    ]
-  ],
-  "exportedEnv": {
-    "CAML_LD_LIBRARY_PATH": {
-      "val": "#{self.install / 'lib' / 'num' : $CAML_LD_LIBRARY_PATH}",
-      "scope": "global"
-    }
-  },
-  "dependencies": {
-    "ocaml": "*",
-    "@opam/ocamlfind": "*"
-  }
-}
diff --git a/esy.lock/overrides/opam__s__ocamlbuild_opam__c__0.14.0_opam_override/files/ocamlbuild-0.14.0.patch b/esy.lock/overrides/opam__s__ocamlbuild_opam__c__0.14.0_opam_override/files/ocamlbuild-0.14.0.patch
deleted file mode 100644
index 4d5bea0..0000000
--- a/esy.lock/overrides/opam__s__ocamlbuild_opam__c__0.14.0_opam_override/files/ocamlbuild-0.14.0.patch
+++ /dev/null
@@ -1,463 +0,0 @@
---- ./Makefile
-+++ ./Makefile
-@@ -213,7 +213,7 @@
- 	rm -f man/ocamlbuild.1
- 
- man/options_man.byte: src/ocamlbuild_pack.cmo
--	$(OCAMLC) $^ -I src man/options_man.ml -o man/options_man.byte
-+	$(OCAMLC) -I +unix unix.cma $^ -I src man/options_man.ml -o man/options_man.byte
- 
- clean::
- 	rm -f man/options_man.cm*
---- ./src/command.ml
-+++ ./src/command.ml
-@@ -148,9 +148,10 @@
-   let self = string_of_command_spec_with_calls call_with_tags call_with_target resolve_virtuals in
-   let b = Buffer.create 256 in
-   (* The best way to prevent bash from switching to its windows-style
--   * quote-handling is to prepend an empty string before the command name. *)
-+   * quote-handling is to prepend an empty string before the command name.
-+   * space seems to work, too - and the ouput is nicer *)
-   if Sys.os_type = "Win32" then
--    Buffer.add_string b "''";
-+    Buffer.add_char b ' ';
-   let first = ref true in
-   let put_space () =
-     if !first then
-@@ -260,7 +261,7 @@
- 
- let execute_many ?(quiet=false) ?(pretend=false) cmds =
-   add_parallel_stat (List.length cmds);
--  let degraded = !*My_unix.is_degraded || Sys.os_type = "Win32" in
-+  let degraded = !*My_unix.is_degraded in
-   let jobs = !jobs in
-   if jobs < 0 then invalid_arg "jobs < 0";
-   let max_jobs = if jobs = 0 then None else Some jobs in
---- ./src/findlib.ml
-+++ ./src/findlib.ml
-@@ -66,9 +66,6 @@
-     (fun command -> lexer & Lexing.from_string & run_and_read command)
-     command
- 
--let run_and_read command =
--  Printf.ksprintf run_and_read command
--
- let rec query name =
-   try
-     Hashtbl.find packages name
-@@ -135,7 +132,8 @@
-   with Not_found -> s
- 
- let list () =
--  List.map before_space (split_nl & run_and_read "%s list" ocamlfind)
-+  let cmd = Shell.quote_filename_if_needed ocamlfind ^ " list" in
-+  List.map before_space (split_nl & run_and_read cmd)
- 
- (* The closure algorithm is easy because the dependencies are already closed
- and sorted for each package. We only have to make the union. We could also
---- ./src/main.ml
-+++ ./src/main.ml
-@@ -162,6 +162,9 @@
-               Tags.mem "traverse" tags
-               || List.exists (Pathname.is_prefix path_name) !Options.include_dirs
-               || List.exists (Pathname.is_prefix path_name) target_dirs)
-+            && ((* beware: !Options.build_dir is an absolute directory *)
-+              Pathname.normalize !Options.build_dir
-+              <> Pathname.normalize (Pathname.pwd/path_name))
-           end
-         end
-       end
---- ./src/my_std.ml
-+++ ./src/my_std.ml
-@@ -271,13 +271,107 @@
-       try Array.iter (fun x -> if x = basename then raise Exit) a; false
-       with Exit -> true
- 
-+let command_plain = function
-+| [| |] -> 0
-+| margv ->
-+  let rec waitpid a b =
-+    match Unix.waitpid a b with
-+    | exception (Unix.Unix_error(Unix.EINTR,_,_)) -> waitpid a b
-+    | x -> x
-+  in
-+  let pid = Unix.(create_process margv.(0) margv stdin stdout stderr) in
-+  let pid', process_status = waitpid [] pid in
-+  assert (pid = pid');
-+  match process_status with
-+  | Unix.WEXITED n -> n
-+  | Unix.WSIGNALED _ -> 2 (* like OCaml's uncaught exceptions *)
-+  | Unix.WSTOPPED _ -> 127
-+
-+(* can't use Lexers because of circular dependency *)
-+let split_path_win str =
-+  let rec aux pos =
-+    try
-+      let i = String.index_from str pos ';' in
-+      let len = i - pos in
-+      if len = 0 then
-+        aux (succ i)
-+      else
-+        String.sub str pos (i - pos) :: aux (succ i)
-+    with Not_found | Invalid_argument _ ->
-+      let len = String.length str - pos in
-+      if len = 0 then [] else [String.sub str pos len]
-+  in
-+  aux 0
-+
-+let windows_shell = lazy begin
-+  let rec iter = function
-+  | [] -> [| "bash.exe" ; "--norc" ; "--noprofile" |]
-+  | hd::tl ->
-+    let dash = Filename.concat hd "dash.exe" in
-+    if Sys.file_exists dash then [|dash|] else
-+    let bash = Filename.concat hd "bash.exe" in
-+    if Sys.file_exists bash = false then iter tl else
-+    (* if sh.exe and bash.exe exist in the same dir, choose sh.exe *)
-+    let sh = Filename.concat hd "sh.exe" in
-+    if Sys.file_exists sh then [|sh|] else [|bash ; "--norc" ; "--noprofile"|]
-+  in
-+  split_path_win (try Sys.getenv "PATH" with Not_found -> "") |> iter
-+end
-+
-+let prep_windows_cmd cmd =
-+  (* workaround known ocaml bug, remove later *)
-+  if String.contains cmd '\t' && String.contains cmd ' ' = false then
-+    " " ^ cmd
-+  else
-+    cmd
-+
-+let run_with_shell = function
-+| "" -> 0
-+| cmd ->
-+  let cmd = prep_windows_cmd cmd in
-+  let shell = Lazy.force windows_shell in
-+  let qlen = Filename.quote cmd |> String.length in
-+  (* old versions of dash had problems with bs *)
-+  try
-+    if qlen < 7_900 then
-+      command_plain (Array.append shell [| "-ec" ; cmd |])
-+    else begin
-+      (* it can still work, if the called command is a cygwin tool *)
-+      let ch_closed = ref false in
-+      let file_deleted = ref false in
-+      let fln,ch =
-+        Filename.open_temp_file
-+          ~mode:[Open_binary]
-+          "ocamlbuildtmp"
-+          ".sh"
-+      in
-+      try
-+        let f_slash = String.map ( fun x -> if x = '\\' then '/' else x ) fln in
-+        output_string ch cmd;
-+        ch_closed:= true;
-+        close_out ch;
-+        let ret = command_plain (Array.append shell [| "-e" ; f_slash |]) in
-+        file_deleted:= true;
-+        Sys.remove fln;
-+        ret
-+      with
-+      | x ->
-+        if !ch_closed = false then
-+          close_out_noerr ch;
-+        if !file_deleted = false then
-+          (try Sys.remove fln with _ -> ());
-+        raise x
-+    end
-+  with
-+  | (Unix.Unix_error _) as x ->
-+    (* Sys.command doesn't raise an exception, so run_with_shell also won't
-+       raise *)
-+    Printexc.to_string x ^ ":" ^ cmd |> prerr_endline;
-+    1
-+
- let sys_command =
--  match Sys.os_type with
--  | "Win32" -> fun cmd ->
--      if cmd = "" then 0 else
--      let cmd = "bash --norc -c " ^ Filename.quote cmd in
--      Sys.command cmd
--  | _ -> fun cmd -> if cmd = "" then 0 else Sys.command cmd
-+  if Sys.win32 then run_with_shell
-+  else fun cmd -> if cmd = "" then 0 else Sys.command cmd
- 
- (* FIXME warning fix and use Filename.concat *)
- let filename_concat x y =
---- ./src/my_std.mli
-+++ ./src/my_std.mli
-@@ -69,3 +69,6 @@
- 
- val split_ocaml_version : (int * int * int * string) option
- (** (major, minor, patchlevel, rest) *)
-+
-+val windows_shell : string array Lazy.t
-+val prep_windows_cmd : string -> string
---- ./src/ocamlbuild_executor.ml
-+++ ./src/ocamlbuild_executor.ml
-@@ -34,6 +34,8 @@
-   job_stdin   : out_channel;
-   job_stderr  : in_channel;
-   job_buffer  : Buffer.t;
-+  job_pid     : int;
-+  job_tmp_file: string option;
-   mutable job_dying : bool;
- };;
- 
-@@ -76,6 +78,61 @@
-   in
-   loop 0
- ;;
-+
-+let open_process_full_win cmd env =
-+  let (in_read, in_write) = Unix.pipe () in
-+  let (out_read, out_write) = Unix.pipe () in
-+  let (err_read, err_write) = Unix.pipe () in
-+  Unix.set_close_on_exec in_read;
-+  Unix.set_close_on_exec out_write;
-+  Unix.set_close_on_exec err_read;
-+  let inchan = Unix.in_channel_of_descr in_read in
-+  let outchan = Unix.out_channel_of_descr out_write in
-+  let errchan = Unix.in_channel_of_descr err_read in
-+  let shell = Lazy.force Ocamlbuild_pack.My_std.windows_shell in
-+  let test_cmd =
-+    String.concat " " (List.map Filename.quote (Array.to_list shell)) ^
-+    "-ec " ^
-+    Filename.quote (Ocamlbuild_pack.My_std.prep_windows_cmd cmd) in
-+  let argv,tmp_file =
-+    if String.length test_cmd < 7_900 then
-+      Array.append
-+        shell
-+        [| "-ec" ; Ocamlbuild_pack.My_std.prep_windows_cmd cmd |],None
-+    else
-+    let fln,ch = Filename.open_temp_file ~mode:[Open_binary] "ocamlbuild" ".sh" in
-+    output_string ch (Ocamlbuild_pack.My_std.prep_windows_cmd cmd);
-+    close_out ch;
-+    let fln' = String.map (function '\\' -> '/' | c -> c) fln in
-+    Array.append
-+      shell
-+      [| "-c" ; fln' |], Some fln in
-+  let pid =
-+    Unix.create_process_env argv.(0) argv env out_read in_write err_write in
-+  Unix.close out_read;
-+  Unix.close in_write;
-+  Unix.close err_write;
-+  (pid, inchan, outchan, errchan,tmp_file)
-+
-+let close_process_full_win (pid,inchan, outchan, errchan, tmp_file) =
-+  let delete tmp_file =
-+    match tmp_file with
-+    | None -> ()
-+    | Some x -> try Sys.remove x with Sys_error _ -> () in
-+  let tmp_file_deleted = ref false in
-+  try
-+    close_in inchan;
-+    close_out outchan;
-+    close_in errchan;
-+    let res = snd(Unix.waitpid [] pid) in
-+    tmp_file_deleted := true;
-+    delete tmp_file;
-+    res
-+  with
-+  | x when tmp_file <> None && !tmp_file_deleted = false ->
-+    delete tmp_file;
-+    raise x
-+
- (* ***)
- (*** execute *)
- (* XXX: Add test for non reentrancy *)
-@@ -130,10 +187,16 @@
-   (*** add_job *)
-   let add_job cmd rest result id =
-     (*display begin fun oc -> fp oc "Job %a is %s\n%!" print_job_id id cmd; end;*)
--    let (stdout', stdin', stderr') = open_process_full cmd env in
-+    let (pid,stdout', stdin', stderr', tmp_file) =
-+      if Sys.win32 then open_process_full_win cmd env else
-+      let a,b,c = open_process_full cmd env in
-+      -1,a,b,c,None
-+    in
-     incr jobs_active;
--    set_nonblock (doi stdout');
--    set_nonblock (doi stderr');
-+    if not Sys.win32 then (
-+      set_nonblock (doi stdout');
-+      set_nonblock (doi stderr');
-+    );
-     let job =
-       { job_id          = id;
-         job_command     = cmd;
-@@ -143,7 +206,9 @@
-         job_stdin       = stdin';
-         job_stderr      = stderr';
-         job_buffer      = Buffer.create 1024;
--        job_dying       = false }
-+        job_dying       = false;
-+        job_tmp_file    = tmp_file;
-+        job_pid         = pid }
-     in
-     outputs := FDM.add (doi stdout') job (FDM.add (doi stderr') job !outputs);
-     jobs := JS.add job !jobs;
-@@ -199,6 +264,7 @@
-               try
-                 read fd u 0 (Bytes.length u)
-               with
-+              | Unix.Unix_error(Unix.EPIPE,_,_) when Sys.win32 -> 0
-               | Unix.Unix_error(e,_,_)  ->
-                 let msg = error_message e in
-                 display (fun oc -> fp oc
-@@ -241,14 +307,19 @@
-       decr jobs_active;
- 
-       (* PR#5371: we would get EAGAIN below otherwise *)
--      clear_nonblock (doi job.job_stdout);
--      clear_nonblock (doi job.job_stderr);
--
-+      if not Sys.win32 then (
-+        clear_nonblock (doi job.job_stdout);
-+        clear_nonblock (doi job.job_stderr);
-+      );
-       do_read ~loop:true (doi job.job_stdout) job;
-       do_read ~loop:true (doi job.job_stderr) job;
-       outputs := FDM.remove (doi job.job_stdout) (FDM.remove (doi job.job_stderr) !outputs);
-       jobs := JS.remove job !jobs;
--      let status = close_process_full (job.job_stdout, job.job_stdin, job.job_stderr) in
-+      let status =
-+        if Sys.win32 then
-+          close_process_full_win (job.job_pid, job.job_stdout, job.job_stdin, job.job_stderr, job.job_tmp_file)
-+        else
-+          close_process_full (job.job_stdout, job.job_stdin, job.job_stderr) in
- 
-       let shown = ref false in
- 
---- ./src/ocamlbuild_unix_plugin.ml
-+++ ./src/ocamlbuild_unix_plugin.ml
-@@ -48,12 +48,22 @@
-   end
- 
- let run_and_open s kont =
-+  let s_orig = s in
-+  let s =
-+    (* Be consistent! My_unix.run_and_open uses My_std.sys_command and
-+       sys_command uses bash. *)
-+    if Sys.win32 = false then s else
-+    let l = match Lazy.force My_std.windows_shell |> Array.to_list with
-+    | hd::tl -> (Filename.quote hd)::tl
-+    | _ -> assert false in
-+    "\"" ^ (String.concat " " l) ^ " -ec " ^ Filename.quote (" " ^ s) ^ "\""
-+  in
-   let ic = Unix.open_process_in s in
-   let close () =
-     match Unix.close_process_in ic with
-     | Unix.WEXITED 0 -> ()
-     | Unix.WEXITED _ | Unix.WSIGNALED _ | Unix.WSTOPPED _ ->
--        failwith (Printf.sprintf "Error while running: %s" s) in
-+        failwith (Printf.sprintf "Error while running: %s" s_orig) in
-   let res = try
-       kont ic
-     with e -> (close (); raise e)
---- ./src/options.ml
-+++ ./src/options.ml
-@@ -174,11 +174,24 @@
-     build_dir := Filename.concat (Sys.getcwd ()) s
-   else
-     build_dir := s
-+
-+let slashify =
-+  if Sys.win32 then fun p -> String.map (function '\\' -> '/' | x -> x) p
-+  else fun p ->p
-+
-+let sb () =
-+  match Sys.os_type with
-+  | "Win32" ->
-+    (try set_binary_mode_out stdout true with _ -> ());
-+  | _ -> ()
-+
-+
- let spec = ref (
-     let print_version () =
-+      sb ();
-       Printf.printf "ocamlbuild %s\n%!" Ocamlbuild_config.version; raise Exit_OK
-     in
--    let print_vnum () = print_endline Ocamlbuild_config.version; raise Exit_OK in
-+    let print_vnum () = sb (); print_endline Ocamlbuild_config.version; raise Exit_OK in
-   Arg.align
-   [
-    "-version", Unit print_version , " Display the version";
-@@ -257,8 +270,8 @@
-    "-build-dir", String set_build_dir, "<path> Set build directory (implies no-links)";
-    "-install-lib-dir", Set_string Ocamlbuild_where.libdir, "<path> Set the install library directory";
-    "-install-bin-dir", Set_string Ocamlbuild_where.bindir, "<path> Set the install binary directory";
--   "-where", Unit (fun () -> print_endline !Ocamlbuild_where.libdir; raise Exit_OK), " Display the install library directory";
--   "-which", String (fun cmd -> print_endline (find_tool cmd); raise Exit_OK), "<command> Display path to the tool command";
-+   "-where", Unit (fun () -> sb (); print_endline (slashify !Ocamlbuild_where.libdir); raise Exit_OK), " Display the install library directory";
-+   "-which", String (fun cmd -> sb (); print_endline (slashify (find_tool cmd)); raise Exit_OK), "<command> Display path to the tool command";
-    "-ocamlc", set_cmd ocamlc, "<command> Set the OCaml bytecode compiler";
-    "-plugin-ocamlc", set_cmd plugin_ocamlc, "<command> Set the OCaml bytecode compiler \
-      used when building myocamlbuild.ml (only)";
---- ./src/pathname.ml
-+++ ./src/pathname.ml
-@@ -84,6 +84,26 @@
-   | x :: xs -> x :: normalize_list xs
- 
- let normalize x =
-+  let x =
-+    if Sys.win32 = false then
-+      x
-+    else
-+      let len = String.length x in
-+      let b = Bytes.create len in
-+      for i = 0 to pred len do
-+        match x.[i] with
-+        | '\\' -> Bytes.set b i '/'
-+        | c -> Bytes.set b i c
-+      done;
-+      if len > 1 then (
-+        let c1 = Bytes.get b 0 in
-+        let c2 = Bytes.get b 1 in
-+        if c2 = ':' && c1 >= 'a' && c1 <= 'z' &&
-+           ( len = 2 || Bytes.get b 2 = '/') then
-+          Bytes.set b 0 (Char.uppercase_ascii c1)
-+      );
-+      Bytes.unsafe_to_string b
-+  in
-   if Glob.eval not_normal_form_re x then
-     let root, paths = split x in
-     join root (normalize_list paths)
---- ./src/shell.ml
-+++ ./src/shell.ml
-@@ -24,12 +24,26 @@
-     | 'a'..'z' | 'A'..'Z' | '0'..'9' | '.' | '-' | '/' | '_' | ':' | '@' | '+' | ',' -> loop (pos + 1)
-     | _ -> false in
-   loop 0
-+
-+let generic_quote quotequote s =
-+  let l = String.length s in
-+  let b = Buffer.create (l + 20) in
-+  Buffer.add_char b '\'';
-+  for i = 0 to l - 1 do
-+    if s.[i] = '\''
-+    then Buffer.add_string b quotequote
-+    else Buffer.add_char b  s.[i]
-+  done;
-+  Buffer.add_char b '\'';
-+  Buffer.contents b
-+let unix_quote = generic_quote "'\\''"
-+
- let quote_filename_if_needed s =
-   if is_simple_filename s then s
-   (* We should probably be using [Filename.unix_quote] except that function
-    * isn't exported. Users on Windows will have to live with not being able to
-    * install OCaml into c:\o'caml. Too bad. *)
--  else if Sys.os_type = "Win32" then Printf.sprintf "'%s'" s
-+  else if Sys.os_type = "Win32" then unix_quote s
-   else Filename.quote s
- let chdir dir =
-   reset_filesys_cache ();
-@@ -37,7 +51,7 @@
- let run args target =
-   reset_readdir_cache ();
-   let cmd = String.concat " " (List.map quote_filename_if_needed args) in
--  if !*My_unix.is_degraded || Sys.os_type = "Win32" then
-+  if !*My_unix.is_degraded then
-     begin
-       Log.event cmd target Tags.empty;
-       let st = sys_command cmd in
diff --git a/esy.lock/overrides/opam__s__ocamlbuild_opam__c__0.14.0_opam_override/package.json b/esy.lock/overrides/opam__s__ocamlbuild_opam__c__0.14.0_opam_override/package.json
deleted file mode 100644
index b24be7b..0000000
--- a/esy.lock/overrides/opam__s__ocamlbuild_opam__c__0.14.0_opam_override/package.json
+++ /dev/null
@@ -1,27 +0,0 @@
-{
-  "build": [
-    [
-      "bash",
-      "-c",
-      "#{os == 'windows' ? 'patch -p1 < ocamlbuild-0.14.0.patch' : 'true'}"
-    ],
-    [
-      "make",
-      "-f",
-      "configure.make",
-      "all",
-      "OCAMLBUILD_PREFIX=#{self.install}",
-      "OCAMLBUILD_BINDIR=#{self.bin}",
-      "OCAMLBUILD_LIBDIR=#{self.lib}",
-      "OCAMLBUILD_MANDIR=#{self.man}",
-      "OCAMLBUILD_NATIVE=true",
-      "OCAMLBUILD_NATIVE_TOOLS=true"
-    ],
-    [
-      "make",
-      "check-if-preinstalled",
-      "all",
-      "#{os == 'windows' ? 'install' : 'opam-install'}"
-    ]
-  ]
-}
diff --git a/esy.lock/overrides/opam__s__ocamlfind_opam__c__1.8.1_opam_override/files/findlib-1.8.1.patch b/esy.lock/overrides/opam__s__ocamlfind_opam__c__1.8.1_opam_override/files/findlib-1.8.1.patch
deleted file mode 100644
index 3e3ee5a..0000000
--- a/esy.lock/overrides/opam__s__ocamlfind_opam__c__1.8.1_opam_override/files/findlib-1.8.1.patch
+++ /dev/null
@@ -1,471 +0,0 @@
---- ./Makefile
-+++ ./Makefile
-@@ -57,16 +57,16 @@
- 	cat findlib.conf.in | \
- 	    $(SH) tools/patch '@SITELIB@' '$(OCAML_SITELIB)' >findlib.conf
- 	if ./tools/cmd_from_same_dir ocamlc; then \
--		echo 'ocamlc="ocamlc.opt"' >>findlib.conf; \
-+		echo 'ocamlc="ocamlc.opt$(EXEC_SUFFIX)"' >>findlib.conf; \
- 	fi
- 	if ./tools/cmd_from_same_dir ocamlopt; then \
--		echo 'ocamlopt="ocamlopt.opt"' >>findlib.conf; \
-+		echo 'ocamlopt="ocamlopt.opt$(EXEC_SUFFIX)"' >>findlib.conf; \
- 	fi
- 	if ./tools/cmd_from_same_dir ocamldep; then \
--		echo 'ocamldep="ocamldep.opt"' >>findlib.conf; \
-+		echo 'ocamldep="ocamldep.opt$(EXEC_SUFFIX)"' >>findlib.conf; \
- 	fi
- 	if ./tools/cmd_from_same_dir ocamldoc; then \
--		echo 'ocamldoc="ocamldoc.opt"' >>findlib.conf; \
-+		echo 'ocamldoc="ocamldoc.opt$(EXEC_SUFFIX)"' >>findlib.conf; \
- 	fi
- 
- .PHONY: install-doc
---- ./src/findlib/findlib_config.mlp
-+++ ./src/findlib/findlib_config.mlp
-@@ -24,3 +24,5 @@
-     | "MacOS" -> ""        (* don't know *)
-     | _ -> failwith "Unknown Sys.os_type"
- ;;
-+
-+let exec_suffix = "@EXEC_SUFFIX@";;
---- ./src/findlib/findlib.ml
-+++ ./src/findlib/findlib.ml
-@@ -28,15 +28,20 @@
- let conf_ldconf = ref "";;
- let conf_ignore_dups_in = ref ([] : string list);;
- 
--let ocamlc_default = "ocamlc";;
--let ocamlopt_default = "ocamlopt";;
--let ocamlcp_default = "ocamlcp";;
--let ocamloptp_default = "ocamloptp";;
--let ocamlmklib_default = "ocamlmklib";;
--let ocamlmktop_default = "ocamlmktop";;
--let ocamldep_default = "ocamldep";;
--let ocamlbrowser_default = "ocamlbrowser";;
--let ocamldoc_default = "ocamldoc";;
-+let add_exec str =
-+  match Findlib_config.exec_suffix with
-+  | "" -> str
-+  | a  -> str ^ a ;;
-+let ocamlc_default = add_exec "ocamlc";;
-+let ocamlopt_default = add_exec "ocamlopt";;
-+let ocamlcp_default = add_exec "ocamlcp";;
-+let ocamloptp_default = add_exec "ocamloptp";;
-+let ocamlmklib_default = add_exec "ocamlmklib";;
-+let ocamlmktop_default = add_exec "ocamlmktop";;
-+let ocamldep_default = add_exec "ocamldep";;
-+let ocamlbrowser_default = add_exec "ocamlbrowser";;
-+let ocamldoc_default = add_exec "ocamldoc";;
-+
- 
- 
- let init_manually 
---- ./src/findlib/fl_package_base.ml
-+++ ./src/findlib/fl_package_base.ml
-@@ -133,7 +133,15 @@
- 	  List.find (fun def -> def.def_var = "exists_if") p.package_defs  in
- 	let files = Fl_split.in_words def.def_value in
- 	List.exists 
--	  (fun file -> Sys.file_exists (Filename.concat d' file))
-+	  (fun file ->
-+            let fln = Filename.concat d' file in
-+            let e = Sys.file_exists fln in
-+            (* necessary for ppx executables *)
-+            if e || Sys.os_type <> "Win32" || Filename.check_suffix fln ".exe" then
-+              e
-+            else
-+              Sys.file_exists (fln ^ ".exe")
-+          )
- 	  files
-       with Not_found -> true in
- 
---- ./src/findlib/fl_split.ml
-+++ ./src/findlib/fl_split.ml
-@@ -126,10 +126,17 @@
-     | '/' | '\\' -> true
-     | _ -> false in
-   let norm_dir_win() =
--    if l >= 1 && s.[0] = '/' then
--      Buffer.add_char b '\\' else Buffer.add_char b s.[0];
--    if l >= 2 && s.[1] = '/' then
--      Buffer.add_char b '\\' else Buffer.add_char b s.[1];
-+    if l >= 1 then (
-+      if s.[0] = '/' then
-+        Buffer.add_char b '\\'
-+      else
-+        Buffer.add_char b s.[0] ;
-+      if l >= 2 then
-+        if s.[1] = '/' then
-+          Buffer.add_char b '\\'
-+        else
-+          Buffer.add_char b s.[1];
-+    );
-     for k = 2 to l - 1 do
-       let c = s.[k] in
-       if is_slash c then (
---- ./src/findlib/frontend.ml
-+++ ./src/findlib/frontend.ml
-@@ -31,10 +31,18 @@
-   else
-     Sys_error (arg ^ ": " ^ Unix.error_message code)
- 
-+let is_win = Sys.os_type = "Win32"
-+
-+let () =
-+  match Findlib_config.system with
-+    | "win32" | "win64" | "mingw" | "cygwin" | "mingw64" | "cygwin64" ->
-+      (try set_binary_mode_out stdout true with _ -> ());
-+      (try set_binary_mode_out stderr true with _ -> ());
-+    | _ -> ()
- 
- let slashify s =
-   match Findlib_config.system with
--    | "mingw" | "mingw64" | "cygwin" ->
-+    | "win32" | "win64" | "mingw" | "cygwin" | "mingw64" | "cygwin64" ->
-         let b = Buffer.create 80 in
-         String.iter
-           (function
-@@ -49,7 +57,7 @@
- 
- let out_path ?(prefix="") s =
-   match Findlib_config.system with
--    | "mingw" | "mingw64" | "cygwin" ->
-+   | "win32" | "win64" | "mingw" | "mingw64" | "cygwin" ->
- 	let u = slashify s in
- 	prefix ^ 
- 	  (if String.contains u ' ' then
-@@ -273,11 +281,9 @@
- 
- 
- let identify_dir d =
--  match Sys.os_type with
--    | "Win32" ->
--	failwith "identify_dir"   (* not available *)
--    | _ ->
--	let s = Unix.stat d in
-+  if is_win then
-+    failwith "identify_dir";   (* not available *)
-+  let s = Unix.stat d in
- 	(s.Unix.st_dev, s.Unix.st_ino)
- ;;
- 
-@@ -459,6 +465,96 @@
-       )
-       packages
- 
-+let rewrite_cmd s =
-+  if s = "" || not is_win then
-+    s
-+  else
-+    let s =
-+      let l = String.length s in
-+      let b = Buffer.create l in
-+      for i = 0 to pred l do
-+        match s.[i] with
-+        | '/' -> Buffer.add_char b '\\'
-+        | x -> Buffer.add_char b x
-+      done;
-+      Buffer.contents b
-+    in
-+    if (Filename.is_implicit s && String.contains s '\\' = false) ||
-+      Filename.check_suffix (String.lowercase s) ".exe" then
-+      s
-+    else
-+      let s' = s ^ ".exe" in
-+      if Sys.file_exists s' then
-+        s'
-+      else
-+        s
-+
-+let rewrite_cmd s =
-+  if s = "" || not is_win then s else
-+  let s =
-+    let l = String.length s in
-+    let b = Buffer.create l in
-+    for i = 0 to pred l do
-+      match s.[i] with
-+      | '/' -> Buffer.add_char b '\\'
-+      | x -> Buffer.add_char b x
-+    done;
-+    Buffer.contents b
-+  in
-+  if (Filename.is_implicit s && String.contains s '\\' = false) ||
-+     Filename.check_suffix (String.lowercase s) ".exe" then
-+    s
-+  else
-+    let s' = s ^ ".exe" in
-+    if Sys.file_exists s' then
-+      s'
-+    else
-+      s
-+
-+let rewrite_pp cmd =
-+  if not is_win then cmd else
-+  let module T = struct exception Keep end in
-+  let is_whitespace = function
-+  | ' ' | '\011' | '\012' | '\n' | '\r' | '\t' -> true
-+  | _ -> false in
-+  (* characters that triggers special behaviour (cmd.exe, not unix shell) *)
-+  let is_unsafe_char = function
-+  | '(' | ')' | '%' | '!' | '^' | '<' | '>' | '&' -> true
-+  | _ -> false in
-+  let len = String.length cmd in
-+  let buf = Buffer.create (len + 4) in
-+  let buf_cmd = Buffer.create len in
-+  let rec iter_ws i =
-+    if i >= len then () else
-+    let cur = cmd.[i] in
-+    if is_whitespace cur then (
-+      Buffer.add_char buf cur;
-+      iter_ws (succ i)
-+    )
-+    else
-+      iter_cmd i
-+  and iter_cmd i =
-+    if i >= len then add_buf_cmd () else
-+    let cur = cmd.[i] in
-+    if is_unsafe_char cur || cur = '"' || cur = '\'' then
-+      raise T.Keep;
-+    if is_whitespace cur then (
-+      add_buf_cmd ();
-+      Buffer.add_substring buf cmd i (len - i)
-+    )
-+    else (
-+      Buffer.add_char buf_cmd cur;
-+      iter_cmd (succ i)
-+    )
-+  and add_buf_cmd () =
-+    if Buffer.length buf_cmd > 0 then
-+      Buffer.add_string buf (rewrite_cmd (Buffer.contents buf_cmd))
-+  in
-+  try
-+    iter_ws 0;
-+    Buffer.contents buf
-+  with
-+  | T.Keep -> cmd
- 
- let process_pp_spec syntax_preds packages pp_opts =
-   (* Returns: pp_command *)
-@@ -549,7 +645,7 @@
-       None -> []
-     | Some cmd ->
- 	["-pp";
--	 cmd ^ " " ^
-+	 (rewrite_cmd cmd) ^ " " ^
- 	 String.concat " " (List.map Filename.quote pp_i_options) ^ " " ^
- 	 String.concat " " (List.map Filename.quote pp_archives) ^ " " ^
- 	 String.concat " " (List.map Filename.quote pp_opts)]
-@@ -625,9 +721,11 @@
-           in
-           try
-             let preprocessor =
-+              rewrite_cmd (
-               resolve_path
-                 ~base ~explicit:true
--                (package_property predicates pname "ppx") in
-+                  (package_property predicates pname "ppx") )
-+            in
-             ["-ppx"; String.concat " " (preprocessor :: options)]
-           with Not_found -> []
-        )
-@@ -895,6 +993,14 @@
-        switch (e.g. -L<path> instead of -L <path>)
-      *)
- 
-+(* We may need to remove files on which we do not have complete control.
-+   On Windows, removing a read-only file fails so try to change the
-+   mode of the file first. *)
-+let remove_file fname =
-+  try Sys.remove fname
-+  with Sys_error _ when is_win ->
-+    (try Unix.chmod fname 0o666 with Unix.Unix_error _ -> ());
-+    Sys.remove fname
- 
- let ocamlc which () =
- 
-@@ -1022,9 +1128,12 @@
-               
- 	      "-intf", 
- 	      Arg.String (fun s -> pass_files := !pass_files @ [ Intf(slashify s) ]);
--              
-+
- 	      "-pp", 
--	      Arg.String (fun s -> pp_specified := true; add_spec_fn "-pp" s);
-+	      Arg.String (fun s -> pp_specified := true; add_spec_fn "-pp" (rewrite_pp s));
-+
-+              "-ppx",
-+              Arg.String (fun s -> add_spec_fn "-ppx" (rewrite_pp s));
- 	      
- 	      "-thread", 
- 	      Arg.Unit (fun _ -> threads := threads_default);
-@@ -1237,7 +1346,7 @@
-     with
-       any ->
- 	close_out initl;
--	Sys.remove initl_file_name;
-+	remove_file initl_file_name;
- 	raise any
-   end;
- 
-@@ -1245,9 +1354,9 @@
-     at_exit
-       (fun () ->
- 	let tr f x = try f x with _ -> () in
--	tr Sys.remove initl_file_name;
--	tr Sys.remove (Filename.chop_extension initl_file_name ^ ".cmi");
--	tr Sys.remove (Filename.chop_extension initl_file_name ^ ".cmo");
-+	tr remove_file initl_file_name;
-+	tr remove_file (Filename.chop_extension initl_file_name ^ ".cmi");
-+	tr remove_file (Filename.chop_extension initl_file_name ^ ".cmo");
-       );
- 
-   let exclude_list = [ stdlibdir; threads_dir; vmthreads_dir ] in
-@@ -1493,7 +1602,9 @@
- 	  [ "-v", Arg.Unit (fun () -> verbose := Verbose);
- 	    "-pp", Arg.String (fun s ->
- 				 pp_specified := true;
--				 options := !options @ ["-pp"; s]);
-+				 options := !options @ ["-pp"; rewrite_pp s]);
-+            "-ppx", Arg.String (fun s ->
-+				 options := !options @ ["-ppx"; rewrite_pp s]);
- 	  ]
-       )
-     )
-@@ -1672,7 +1783,9 @@
- 	      Arg.String (fun s -> add_spec_fn "-I" (slashify (resolve_path s)));
- 
- 	      "-pp", Arg.String (fun s -> pp_specified := true;
--		 	           add_spec_fn "-pp" s);
-+                           add_spec_fn "-pp" (rewrite_pp s));
-+              "-ppx", Arg.String (fun s -> add_spec_fn "-ppx" (rewrite_pp s));
-+
- 	    ]
- 	)
-     )
-@@ -1830,7 +1943,10 @@
-       output_string ch_out append;
-       close_out ch_out;
-       close_in ch_in;
--      Unix.utimes outpath s.Unix.st_mtime s.Unix.st_mtime;
-+      (try Unix.utimes outpath s.Unix.st_mtime s.Unix.st_mtime
-+       with Unix.Unix_error(e,_,_) ->
-+         prerr_endline("Warning: setting utimes for " ^ outpath
-+                       ^ ": " ^ Unix.error_message e));
- 
-       prerr_endline("Installed " ^ outpath);
-     with
-@@ -1882,6 +1998,8 @@
-              Unix.openfile (Filename.concat dir owner_file) [Unix.O_RDONLY] 0 in
-            let f =
-              Unix.in_channel_of_descr fd in
-+           if is_win then
-+             set_binary_mode_in f false;
-            try
-              let line = input_line f in
-              let is_my_file = (line = pkg) in
-@@ -2208,7 +2326,7 @@
-     let lines = read_ldconf !ldconf in
-     let dlldir_norm = Fl_split.norm_dir dlldir in
-     let dlldir_norm_lc = string_lowercase_ascii dlldir_norm in
--    let ci_filesys = (Sys.os_type = "Win32") in
-+    let ci_filesys = is_win in
-     let check_dir d =
-       let d' = Fl_split.norm_dir d in
-       (d' = dlldir_norm) || 
-@@ -2356,7 +2474,7 @@
-       List.iter
-         (fun file ->
-            let absfile = Filename.concat dlldir file in
--           Sys.remove absfile;
-+           remove_file absfile;
-            prerr_endline ("Removed " ^ absfile)
-         )
-         dll_files
-@@ -2365,7 +2483,7 @@
-     (* Remove the files from the package directory: *)
-     if Sys.file_exists pkgdir then begin
-       let files = Sys.readdir pkgdir in
--      Array.iter (fun f -> Sys.remove (Filename.concat pkgdir f)) files;
-+      Array.iter (fun f -> remove_file (Filename.concat pkgdir f)) files;
-       Unix.rmdir pkgdir;
-       prerr_endline ("Removed " ^ pkgdir)
-     end
-@@ -2415,7 +2533,9 @@
- 
- 
- let print_configuration() =
-+  let sl = slashify in
-   let dir s =
-+    let s = sl s in
-     if Sys.file_exists s then
-       s
-     else
-@@ -2453,27 +2573,27 @@
- 	   if md = "" then "the corresponding package directories" else dir md
- 	  );
- 	Printf.printf "The standard library is assumed to reside in:\n    %s\n"
--	  (Findlib.ocaml_stdlib());
-+    (sl (Findlib.ocaml_stdlib()));
- 	Printf.printf "The ld.conf file can be found here:\n    %s\n"
--	  (Findlib.ocaml_ldconf());
-+    (sl (Findlib.ocaml_ldconf()));
- 	flush stdout
-     | Some "conf" ->
--	print_endline (Findlib.config_file())
-+  print_endline (sl (Findlib.config_file()))
-     | Some "path" ->
--	List.iter print_endline (Findlib.search_path())
-+  List.iter ( fun x -> print_endline (sl x)) (Findlib.search_path())
-     | Some "destdir" ->
--	print_endline (Findlib.default_location())
-+  print_endline ( sl (Findlib.default_location()))
-     | Some "metadir" ->
--	print_endline (Findlib.meta_directory())
-+  print_endline ( sl (Findlib.meta_directory()))
-     | Some "metapath" ->
-         let mdir = Findlib.meta_directory() in
-         let ddir = Findlib.default_location() in
--	print_endline 
--          (if mdir <> "" then mdir ^ "/META.%s" else ddir ^ "/%s/META")
-+  print_endline ( sl
-+          (if mdir <> "" then mdir ^ "/META.%s" else ddir ^ "/%s/META"))
-     | Some "stdlib" ->
--	print_endline (Findlib.ocaml_stdlib())
-+  print_endline ( sl (Findlib.ocaml_stdlib()))
-     | Some "ldconf" ->
--	print_endline (Findlib.ocaml_ldconf())
-+  print_endline ( sl (Findlib.ocaml_ldconf()))
-     | _ ->
- 	assert false
- ;;
-@@ -2481,7 +2601,7 @@
- 
- let ocamlcall pkg cmd =
-   let dir = package_directory pkg in
--  let path = Filename.concat dir cmd in
-+  let path = rewrite_cmd (Filename.concat dir cmd) in
-   begin
-     try Unix.access path [ Unix.X_OK ]
-     with
-@@ -2647,6 +2767,10 @@
-   | Sys_error f ->
-       prerr_endline ("ocamlfind: " ^ f);
-       exit 2
-+  | Unix.Unix_error (e, fn, f) ->
-+      prerr_endline ("ocamlfind: " ^ fn ^ " " ^ f
-+                     ^ ": " ^ Unix.error_message e);
-+      exit 2
-   | Findlib.No_such_package(pkg,info) ->
-       prerr_endline ("ocamlfind: Package `" ^ pkg ^ "' not found" ^
- 		     (if info <> "" then " - " ^ info else ""));
---- ./src/findlib/Makefile
-+++ ./src/findlib/Makefile
-@@ -90,6 +90,7 @@
- 	cat findlib_config.mlp | \
- 	        $(SH) $(TOP)/tools/patch '@CONFIGFILE@' '$(OCAMLFIND_CONF)' | \
- 	        $(SH) $(TOP)/tools/patch '@STDLIB@' '$(OCAML_CORE_STDLIB)' | \
-+			$(SH) $(TOP)/tools/patch '@EXEC_SUFFIX@' '$(EXEC_SUFFIX)' | \
- 		sed -e 's;@AUTOLINK@;$(OCAML_AUTOLINK);g' \
- 		    -e 's;@SYSTEM@;$(SYSTEM);g' \
- 		     >findlib_config.ml
diff --git a/esy.lock/overrides/opam__s__ocamlfind_opam__c__1.8.1_opam_override/package.json b/esy.lock/overrides/opam__s__ocamlfind_opam__c__1.8.1_opam_override/package.json
deleted file mode 100644
index 9314f87..0000000
--- a/esy.lock/overrides/opam__s__ocamlfind_opam__c__1.8.1_opam_override/package.json
+++ /dev/null
@@ -1,61 +0,0 @@
-{
-  "build": [
-    [
-      "bash",
-      "-c",
-      "#{os == 'windows' ? 'patch -p1 < findlib-1.8.1.patch' : 'true'}"
-    ],
-    [
-      "./configure",
-      "-bindir",
-      "#{self.bin}",
-      "-sitelib",
-      "#{self.lib}",
-      "-mandir",
-      "#{self.man}",
-      "-config",
-      "#{self.lib}/findlib.conf",
-      "-no-custom",
-      "-no-topfind"
-    ],
-    [
-      "make",
-      "all"
-    ],
-    [
-      "make",
-      "opt"
-    ]
-  ],
-  "install": [
-    [
-      "make",
-      "install"
-    ],
-    [
-      "install",
-      "-m",
-      "0755",
-      "ocaml-stub",
-      "#{self.bin}/ocaml"
-    ],
-    [
-      "mkdir",
-      "-p",
-      "#{self.toplevel}"
-    ],
-    [
-      "install",
-      "-m",
-      "0644",
-      "src/findlib/topfind",
-      "#{self.toplevel}/topfind"
-    ]
-  ],
-  "exportedEnv": {
-    "OCAML_TOPLEVEL_PATH": {
-      "val": "#{self.toplevel}",
-      "scope": "global"
-    }
-  }
-}
diff --git a/esy.lock/overrides/opam__s__ocb_stubblr_opam__c__0.1.1_1_opam_override/files/customer-cclib.patch b/esy.lock/overrides/opam__s__ocb_stubblr_opam__c__0.1.1_1_opam_override/files/customer-cclib.patch
deleted file mode 100644
index e78b0df..0000000
--- a/esy.lock/overrides/opam__s__ocb_stubblr_opam__c__0.1.1_1_opam_override/files/customer-cclib.patch
+++ /dev/null
@@ -1,22 +0,0 @@
-From d51b3f3a49f159469e00d23524db915f19bb0127 Mon Sep 17 00:00:00 2001
-From: Hannes Mehnert <hannes@mehnert.org>
-Date: Tue, 3 Oct 2017 13:55:16 +0100
-Subject: [PATCH] bytecode / custom needs -cclib as well
-
----
- src/ocb_stubblr.ml | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/ocb_stubblr.ml b/src/ocb_stubblr.ml
-index b68c37a..a0ee035 100644
---- a/src/ocb_stubblr.ml
-+++ b/src/ocb_stubblr.ml
-@@ -160,7 +160,7 @@ let link_flag () =
-     S [A switch; A ("-l"^name)]
-   and dep flag = Pathname.([remove_extension flag -.- "a"]) in
-   pflag ["link"; "ocaml"; "library"; "byte"] tag (libarg "-dllib");
--  pflag ["link"; "ocaml"; "library"; "native"] tag  (libarg "-cclib");
-+  pflag ["link"; "ocaml"; "library"] tag  (libarg "-cclib");
-   pdep ["link"; "ocaml"] tag dep;
-   pdep ["compile"; "ocaml"] tag dep
-   (* XXX sneak in '-I' for compile;ocaml;program ?? *)
diff --git a/esy.lock/overrides/opam__s__ocb_stubblr_opam__c__0.1.1_1_opam_override/files/ocb-stubblr-0.1.1.patch b/esy.lock/overrides/opam__s__ocb_stubblr_opam__c__0.1.1_1_opam_override/files/ocb-stubblr-0.1.1.patch
deleted file mode 100644
index 1f763f3..0000000
--- a/esy.lock/overrides/opam__s__ocb_stubblr_opam__c__0.1.1_1_opam_override/files/ocb-stubblr-0.1.1.patch
+++ /dev/null
@@ -1,31 +0,0 @@
---- ./src/ocb_stubblr.ml
-+++ ./src/ocb_stubblr.ml
-@@ -158,7 +158,7 @@
-     let name = Pathname.(remove_extension clib |> basename) in
-     let name = String.(if is_prefix ~affix:"lib" name then drop ~max:3 name else name) in
-     S [A switch; A ("-l"^name)]
--  and dep flag = Pathname.([remove_extension flag -.- "a"]) in
-+  and dep flag = Pathname.([remove_extension flag -.- !Options.ext_lib]) in
-   pflag ["link"; "ocaml"; "library"; "byte"] tag (libarg "-dllib");
-   pflag ["link"; "ocaml"; "library"; "native"] tag  (libarg "-cclib");
-   pdep ["link"; "ocaml"] tag dep;
-@@ -174,9 +174,18 @@
-   let c = env c and deps = env deps in
-   let to_list str = List.filter ((<>) "\\") @@
-     String.fields ~empty:false ~is_sep:Char.Ascii.is_white str in
-+  let cc =
-+    (* very dirty, no msvc support *)
-+    if Sys.os_type <> "Win32" then
-+      "cc"
-+    else if Sys.word_size = 64 then
-+      "x86_64-w64-mingw32-gcc"
-+    else
-+      "i686-w64-mingw32-gcc"
-+  in
-   let cmd = Cmd (
-     S [ A "cd"; P root; Sh "&&";
--        A "cc"; T (tags_of_pathname c); A "-MM"; A "-MG"; P c ]) in
-+        A cc; T (tags_of_pathname c); A "-MM"; A "-MG"; P c ]) in
-   let headers = match Command.to_string cmd |> run_and_read |> to_list with
-     | _::_::xs -> List.map (fun p -> Pathname.normalize p ^ "\n") xs
-     | _ -> error_exit_msgf "%s: depends: unrecognized format" c in
diff --git a/esy.lock/overrides/opam__s__ocb_stubblr_opam__c__0.1.1_1_opam_override/files/use-OPAM_SWITCH_PREFIX.patch b/esy.lock/overrides/opam__s__ocb_stubblr_opam__c__0.1.1_1_opam_override/files/use-OPAM_SWITCH_PREFIX.patch
deleted file mode 100644
index dfb32a3..0000000
--- a/esy.lock/overrides/opam__s__ocb_stubblr_opam__c__0.1.1_1_opam_override/files/use-OPAM_SWITCH_PREFIX.patch
+++ /dev/null
@@ -1,33 +0,0 @@
-From f1c9340f3ab973ad1e8dcc4b7065bbe6cfaa028f Mon Sep 17 00:00:00 2001
-From: David Allsopp <david.allsopp@metastack.com>
-Date: Sun, 1 Jul 2018 09:54:32 +0100
-Subject: [PATCH] Use OPAM_SWITCH_PREFIX before opam config var prefix
-
-opam 2's sandbox doesn't expose the mount point for the opam root.
-
-Signed-off-by: David Allsopp <david.allsopp@metastack.com>
----
- src/ocb_stubblr.ml | 6 +++++-
- 1 file changed, 5 insertions(+), 1 deletion(-)
-
-diff --git a/src/ocb_stubblr.ml b/src/ocb_stubblr.ml
-index b68c37a..2cc5332 100644
---- a/src/ocb_stubblr.ml
-+++ b/src/ocb_stubblr.ml
-@@ -31,11 +31,15 @@ module Pkg_config = struct
- 
-   (* XXX Would be nice to move pkg-config results to a build artefact. *)
- 
--  let opam_prefix =
-+  let opam_prefix_cmd =
-     let cmd = "opam config var prefix" in
-     lazy ( try run_and_read cmd with Failure _ ->
-             error_msgf "error running opam")
- 
-+  let opam_prefix =
-+    lazy (try Sys.getenv "OPAM_SWITCH_PREFIX"
-+          with Not_found -> Lazy.force opam_prefix_cmd)
-+
-   let var = "PKG_CONFIG_PATH"
- 
-   let path () =
\ No newline at end of file
diff --git a/esy.lock/overrides/opam__s__ocb_stubblr_opam__c__0.1.1_1_opam_override/package.json b/esy.lock/overrides/opam__s__ocb_stubblr_opam__c__0.1.1_1_opam_override/package.json
deleted file mode 100644
index 66492dd..0000000
--- a/esy.lock/overrides/opam__s__ocb_stubblr_opam__c__0.1.1_1_opam_override/package.json
+++ /dev/null
@@ -1,17 +0,0 @@
-{
-  "build": [
-    "#{os == 'windows' ? 'patch --strip 1 --input ocb-stubblr-0.1.1.patch' : 'true'}",
-    [
-      "ocaml",
-      "pkg/pkg.ml",
-      "build",
-      "--pinned",
-      "false",
-      "--tests",
-      "false"
-    ]
-  ],
-  "dependencies": {
-    "@esy-ocaml/fauxpam": "0.2.0"
-  }
-}
diff --git a/esy.lock/overrides/opam__s__ocplib_endian_opam__c__1.0_opam_override/files/esy-fix.patch b/esy.lock/overrides/opam__s__ocplib_endian_opam__c__1.0_opam_override/files/esy-fix.patch
deleted file mode 100644
index b9e945a..0000000
--- a/esy.lock/overrides/opam__s__ocplib_endian_opam__c__1.0_opam_override/files/esy-fix.patch
+++ /dev/null
@@ -1,13 +0,0 @@
---- ./setup.ml
-+++ ./setup.ml
-@@ -6331,9 +6331,7 @@
-           [
-             "-classic-display";
-             "-no-log";
--            "-no-links";
--            "-install-lib-dir";
--            (Filename.concat (standard_library ()) "ocamlbuild")
-+            "-no-links"
-           ]
-         else
-           [];
diff --git a/esy.lock/overrides/opam__s__ocplib_endian_opam__c__1.0_opam_override/files/ocplib-endian-0.8.patch b/esy.lock/overrides/opam__s__ocplib_endian_opam__c__1.0_opam_override/files/ocplib-endian-0.8.patch
deleted file mode 100644
index 7cafa0d..0000000
--- a/esy.lock/overrides/opam__s__ocplib_endian_opam__c__1.0_opam_override/files/ocplib-endian-0.8.patch
+++ /dev/null
@@ -1,41 +0,0 @@
---- ./myocamlbuild.ml
-+++ ./myocamlbuild.ml
-@@ -573,6 +573,24 @@
-    Add a dependency after dropping support for 4.01 and earlier. *)
- let dispatch_cppo = function
-   | After_rules -> begin
-+    let is_directory s =
-+      let slen = String.length s in
-+      let s =
-+        if Sys.os_type <> "Win32" || slen < 2 then
-+          s
-+        else
-+          match s.[slen-1] with
-+          | '\\' | '/' ->
-+              if slen <> 3 || s.[1] <> ':' then
-+                String.sub s 0 (slen -1)
-+              else
-+                (match s.[0] with
-+                | 'A' .. 'Z' | 'a' .. 'z' -> s
-+                | _ -> String.sub s 0 (slen -1))
-+          | _ -> s
-+	    in
-+      Pathname.is_directory s
-+    in
-       let cppo_rules ext =
-         let dep   = "%(name).cppo"-.-ext
-         and prod1 = "%(name: <*> and not <*.cppo>)"-.-ext
-@@ -591,11 +609,11 @@
-       pflag ["cppo"] "cppo_D" (fun s -> S [A "-D"; A s]) ;
-       pflag ["cppo"] "cppo_U" (fun s -> S [A "-U"; A s]) ;
-       pflag ["cppo"] "cppo_I" (fun s ->
--        if Pathname.is_directory s then S [A "-I"; P s]
-+        if is_directory s then S [A "-I"; P s]
-         else S [A "-I"; P (Pathname.dirname s)]
-       ) ;
-       pdep ["cppo"] "cppo_I" (fun s ->
--        if Pathname.is_directory s then [] else [s]) ;
-+        if is_directory s then [] else [s]) ;
-       flag ["cppo"; "cppo_q"] (A "-q") ;
-       flag ["cppo"; "cppo_s"] (A "-s") ;
-       flag ["cppo"; "cppo_n"] (A "-n") ;
diff --git a/esy.lock/overrides/opam__s__ocplib_endian_opam__c__1.0_opam_override/package.json b/esy.lock/overrides/opam__s__ocplib_endian_opam__c__1.0_opam_override/package.json
deleted file mode 100644
index 86ea38b..0000000
--- a/esy.lock/overrides/opam__s__ocplib_endian_opam__c__1.0_opam_override/package.json
+++ /dev/null
@@ -1,34 +0,0 @@
-{
-  "build": [
-    [
-      "bash",
-      "-c",
-      "#{os == 'windows' ? 'patch -p1 < ocplib-endian-0.8.patch' : 'true'}"
-    ],
-    [
-      "bash",
-      "-c",
-      "#{os == 'windows' ? 'patch -p1 < esy-fix.patch' : 'true'}"
-    ],
-    [
-      "ocaml",
-      "setup.ml",
-      "-configure",
-      "--disable-debug",
-      "--prefix",
-      "#{self.install}"
-    ],
-    [
-      "ocaml",
-      "setup.ml",
-      "-build"
-    ]
-  ],
-  "install": [
-    [
-      "ocaml",
-      "setup.ml",
-      "-install"
-    ]
-  ]
-}
diff --git a/esy.lock/overrides/opam__s__zarith_opam__c__1.9.1_opam_override/package.json b/esy.lock/overrides/opam__s__zarith_opam__c__1.9.1_opam_override/package.json
deleted file mode 100644
index 7fa37ee..0000000
--- a/esy.lock/overrides/opam__s__zarith_opam__c__1.9.1_opam_override/package.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "exportedEnv": {
-    "CAML_LD_LIBRARY_PATH": {
-      "val": "#{self.lib / 'zarith' : $CAML_LD_LIBRARY_PATH}",
-      "scope": "global"
-    }
-  }
-}
diff --git a/executable/Alias.re b/executable/Alias.re
deleted file mode 100644
index d631e52..0000000
--- a/executable/Alias.re
+++ /dev/null
@@ -1,37 +0,0 @@
-open Fnm;
-
-let run = (~name, ~version) => {
-  let version = Versions.format(version);
-  let%lwt matchingLocalVersions =
-    LocalVersionResolver.getMatchingLocalVersions(version);
-
-  switch (Base.List.hd(matchingLocalVersions)) {
-  | Some(latestMatchingLocalVersion) =>
-    Logger.info(
-      <Pastel>
-        "Aliasing "
-        <Pastel color=Pastel.Cyan> name </Pastel>
-        " to "
-        <Pastel color=Pastel.Cyan> {latestMatchingLocalVersion.name} </Pastel>
-      </Pastel>,
-    );
-
-    let%lwt () =
-      Versions.Aliases.set(
-        ~alias=name,
-        ~versionPath=
-          Filename.concat(
-            latestMatchingLocalVersion.fullPath,
-            "installation",
-          ),
-      );
-    Lwt.return_ok();
-  | None =>
-    Logger.error(
-      <Pastel color=Pastel.Red>
-        "No installed versions found that match your criteria."
-      </Pastel>,
-    );
-    Lwt.return_error(1);
-  };
-};
diff --git a/executable/Current.re b/executable/Current.re
deleted file mode 100644
index dcac705..0000000
--- a/executable/Current.re
+++ /dev/null
@@ -1,11 +0,0 @@
-open Fnm;
-
-let run = () => {
-  let%lwt currentVersion = Versions.getCurrentVersion();
-  switch (currentVersion) {
-  | Some({name}) => Console.log(name)
-  | _ => Console.log("none")
-  };
-
-  Lwt.return_ok();
-};
diff --git a/executable/Env.re b/executable/Env.re
deleted file mode 100644
index a9fb881..0000000
--- a/executable/Env.re
+++ /dev/null
@@ -1,163 +0,0 @@
-open Fnm;
-
-module ExportShellVarCmdGetters = {
-  type exportCmdGetter = {
-    getPathCmd: string => string,
-    getMultiShellPathCmd: string => string,
-    getFnmDirCmd: string => string,
-    getNodeDistMirrorCmd: string => string,
-    getLogLevelCmd: string => string,
-  };
-
-  let posixExportCmdGetter: exportCmdGetter = {
-    getPathCmd: path => Printf.sprintf("export PATH=%s/bin:$PATH", path),
-
-    getMultiShellPathCmd: path =>
-      Printf.sprintf("export %s=%s", Config.FNM_MULTISHELL_PATH.name, path),
-
-    getFnmDirCmd: fnmDir =>
-      Printf.sprintf("export %s=%s", Config.FNM_DIR.name, fnmDir),
-
-    getNodeDistMirrorCmd: nodeDistMirror =>
-      Printf.sprintf(
-        "export %s=%s",
-        Config.FNM_NODE_DIST_MIRROR.name,
-        nodeDistMirror,
-      ),
-
-    getLogLevelCmd: logLevel =>
-      Printf.sprintf("export %s=%s", Config.FNM_LOGLEVEL.name, logLevel),
-  };
-
-  let fishExportCmdGetter: exportCmdGetter = {
-    getPathCmd: path => Printf.sprintf("set -gx PATH %s/bin $PATH;", path),
-
-    getMultiShellPathCmd: path =>
-      Printf.sprintf("set -gx %s %s;", Config.FNM_MULTISHELL_PATH.name, path),
-
-    getFnmDirCmd: fnmDir =>
-      Printf.sprintf("set -gx %s %s;", Config.FNM_DIR.name, fnmDir),
-
-    getNodeDistMirrorCmd: nodeDistMirror =>
-      Printf.sprintf(
-        "set -gx %s %s",
-        Config.FNM_NODE_DIST_MIRROR.name,
-        nodeDistMirror,
-      ),
-
-    getLogLevelCmd: logLevel =>
-      Printf.sprintf("set -gx %s %s", Config.FNM_LOGLEVEL.name, logLevel),
-  };
-};
-
-let symlinkExists = path =>
-  try%lwt(Lwt_unix.lstat(path) |> Lwt.map(_ => true)) {
-  | _ => Lwt.return(false)
-  };
-
-let rec makeTemporarySymlink = () => {
-  let suggestedName =
-    Filename.concat(
-      Filename.get_temp_dir_name(),
-      "fnm-shell-"
-      ++ (Random.int32(9999999 |> Int32.of_int) |> Int32.to_string),
-    );
-
-  let%lwt exists = symlinkExists(suggestedName);
-
-  if (exists) {
-    let%lwt suggestedName = makeTemporarySymlink();
-    Lwt.return(suggestedName);
-  } else {
-    let%lwt _ = Lwt_unix.symlink(Directories.defaultVersion, suggestedName);
-    Lwt.return(suggestedName);
-  };
-};
-
-let printUseOnCd = (~shell) =>
-  switch (shell) {
-  | System.Shell.Bash => {|
-    __fnmcd () {
-      cd "$@"
-
-      if [[ -f .node-version && -r .node-version ]]; then
-        echo "fnm: Found .node-version"
-        fnm use
-      elif [[ -f .nvmrc && -r .nvmrc ]]; then
-        echo "fnm: Found .nvmrc"
-        fnm use
-      fi
-    }
-
-    alias cd=__fnmcd
-  |}
-  | Fish => {|
-      function _fnm_autoload_hook --on-variable PWD --description 'Change Node version on directory change'
-        status --is-command-substitution; and return
-        if test -f .node-version
-          echo "fnm: Found .node-version"
-          fnm use
-        else if test -f .nvmrc
-          echo "fnm: Found .nvmrc"
-          fnm use
-        end
-      end
-      _fnm_autoload_hook
-    |}
-  | Zsh => {|
-      autoload -U add-zsh-hook
-      _fnm_autoload_hook () {
-        if [[ -f .node-version && -r .node-version ]]; then
-          echo "fnm: Found .node-version"
-          fnm use
-        elif [[ -f .nvmrc && -r .nvmrc ]]; then
-          echo "fnm: Found .nvmrc"
-          fnm use
-        fi
-      }
-
-      add-zsh-hook chpwd _fnm_autoload_hook \
-        && _fnm_autoload_hook
-    |}
-  };
-
-let run =
-    (~forceShell, ~multishell, ~nodeDistMirror, ~fnmDir, ~useOnCd, ~logLevel) => {
-  open System.Shell;
-
-  let%lwt shell =
-    switch (forceShell) {
-    | None =>
-      switch%lwt (System.Shell.infer()) {
-      | None => Lwt.return(Bash)
-      | Some(shell) => Lwt.return(shell)
-      }
-    | Some(shell) => Lwt.return(shell)
-    };
-
-  Random.self_init();
-
-  let%lwt path =
-    multishell
-      ? makeTemporarySymlink() : Lwt.return(Directories.globalCurrentVersion);
-
-  let exportCmdGetter =
-    shell === Fish
-      ? ExportShellVarCmdGetters.fishExportCmdGetter
-      : ExportShellVarCmdGetters.posixExportCmdGetter;
-
-  exportCmdGetter.getPathCmd(path) |> Console.log;
-  exportCmdGetter.getMultiShellPathCmd(path) |> Console.log;
-  exportCmdGetter.getFnmDirCmd(fnmDir) |> Console.log;
-  exportCmdGetter.getNodeDistMirrorCmd(nodeDistMirror) |> Console.log;
-
-  Fnm.LogLevel.toString(logLevel)
-  |> exportCmdGetter.getLogLevelCmd
-  |> Console.log;
-
-  if (useOnCd) {
-    printUseOnCd(~shell) |> Console.log;
-  };
-
-  Lwt.return_ok();
-};
diff --git a/executable/Exec.re b/executable/Exec.re
deleted file mode 100644
index 6a2667c..0000000
--- a/executable/Exec.re
+++ /dev/null
@@ -1,93 +0,0 @@
-open Fnm;
-
-exception System_Version_Not_Supported;
-exception Ambiguous_Arguments;
-
-let startsWith = (~prefix, str) =>
-  Base.String.prefix(str, String.length(prefix)) != prefix;
-
-let unsafeRun = (~cmd, ~version as maybeVersion, ~useFileVersion) => {
-  let%lwt version =
-    switch (maybeVersion, useFileVersion) {
-    | (None, false) => Lwt.return_none
-    | (Some(_), true) => Lwt.fail(Ambiguous_Arguments)
-    | (None, true) => Fnm.Dotfiles.getVersion() |> Lwt.map(x => Some(x))
-    | (Some(version), false) => Lwt.return_some(version)
-    };
-  let%lwt currentVersion =
-    switch (version) {
-    | None => Lwt.return(Directories.currentVersion)
-    | Some(version) =>
-      let%lwt matchingVersion = LocalVersionResolver.getVersion(version);
-      let matchingVersionPath =
-        switch (matchingVersion) {
-        | Alias(path) => Versions.Aliases.toDirectory(path)
-        | Local(path) => Versions.Local.toDirectory(path)
-        | System => raise(System_Version_Not_Supported)
-        };
-      Lwt.return(matchingVersionPath);
-    };
-  let fnmPath = Filename.concat(currentVersion, "bin");
-  let path = Opt.(Sys.getenv_opt("PATH") or "");
-  let pathEnv = Printf.sprintf("PATH=%s:%s", fnmPath, path);
-  let cmd = cmd |> Array.copy |> Array.append([|"env", pathEnv|]);
-  let%lwt exitCode =
-    Lwt_process.exec(
-      ~stdin=`Keep,
-      ~stdout=`Keep,
-      ~stderr=`Keep,
-      ~env=Unix.environment(),
-      ("", cmd),
-    );
-
-  switch (exitCode) {
-  | Unix.WEXITED(0) => Lwt.return_ok()
-  | Unix.WEXITED(x)
-  | Unix.WSTOPPED(x)
-  | Unix.WSIGNALED(x) => Lwt.return_error(x)
-  };
-};
-
-let run = (~cmd, ~version, ~useFileVersion) => {
-  try%lwt(unsafeRun(~cmd, ~version, ~useFileVersion)) {
-  | Ambiguous_Arguments =>
-    Console.error(
-      <Pastel color=Pastel.Red>
-        <Pastel bold=true> "Error: " </Pastel>
-        "You passed both "
-        <Pastel color=Pastel.Cyan> "--using" </Pastel>
-        " and "
-        <Pastel color=Pastel.Cyan> "--using-file" </Pastel>
-        ".\n"
-        "Please provide only one of them."
-      </Pastel>,
-    );
-    Lwt.return_error(1);
-  | System_Version_Not_Supported =>
-    Console.error(
-      <Pastel color=Pastel.Red>
-        <Pastel bold=true> "Error: " </Pastel>
-        "System version is not supported in "
-        <Pastel color=Pastel.Yellow> "`fnm exec`" </Pastel>
-      </Pastel>,
-    );
-    Lwt.return_error(1);
-  | LocalVersionResolver.Version_Not_Installed(versionName) =>
-    Console.error(
-      <Pastel color=Pastel.Red>
-        <Pastel bold=true> "Error: " </Pastel>
-        "Version "
-        <Pastel color=Pastel.Cyan> versionName </Pastel>
-        " is not installed."
-      </Pastel>,
-    );
-    Lwt.return_error(1);
-  | Dotfiles.Version_Not_Provided =>
-    Console.error(
-      <Pastel color=Pastel.Red>
-        "No .nvmrc or .node-version file was found in the current directory. Please provide a version number."
-      </Pastel>,
-    );
-    Lwt.return_error(1);
-  };
-};
diff --git a/executable/FnmApp.re b/executable/FnmApp.re
deleted file mode 100644
index 5f64b29..0000000
--- a/executable/FnmApp.re
+++ /dev/null
@@ -1,451 +0,0 @@
-let version = Fnm.Fnm__Package.version;
-
-let runCmd = lwt => {
-  lwt
-  |> Lwt_main.run
-  |> (
-    fun
-    | Error(err_code) => exit(err_code)
-    | Ok () => ()
-  );
-};
-
-module Commands = {
-  let exec = (version, useFileVersion, cmd) =>
-    Exec.run(~cmd=Array.of_list(cmd), ~version, ~useFileVersion) |> runCmd;
-  let use = (version, quiet) => Use.run(~version, ~quiet) |> runCmd;
-  let current = () => Current.run() |> runCmd;
-  let alias = (version, name) => Alias.run(~name, ~version) |> runCmd;
-  let default = version => Alias.run(~name="default", ~version) |> runCmd;
-  let listRemote = version => ListRemote.run(~version) |> runCmd;
-  let listLocal = () => ListLocal.run() |> runCmd;
-  let install = version => Install.run(~version) |> runCmd;
-  let uninstall = version => Uninstall.run(~version) |> runCmd;
-  let env =
-      (
-        isFishShell,
-        isMultishell,
-        nodeDistMirror,
-        fnmDir,
-        shell,
-        useOnCd,
-        logLevel,
-      ) =>
-    Env.run(
-      ~forceShell=Fnm.System.Shell.(isFishShell ? Some(Fish) : shell),
-      ~multishell=isMultishell,
-      ~nodeDistMirror,
-      ~fnmDir,
-      ~useOnCd,
-      ~logLevel,
-    )
-    |> runCmd;
-};
-
-open Cmdliner;
-
-let help_secs = [
-  `S(Manpage.s_common_options),
-  `S(Manpage.s_environment),
-  `P("These options are common to all commands."),
-  `S("MORE HELP"),
-  `P("Use `$(mname) $(i,COMMAND) --help' for help on a single command."),
-  `Noblank,
-  `S(Manpage.s_bugs),
-  `P("File bug reports at https://github.com/Schniz/fnm"),
-];
-
-let envs =
-  Fnm.Config.getDocs()
-  |> List.map(envVar =>
-       Fnm.Config.(
-         Term.env_info(
-           ~doc=
-             Printf.sprintf(
-               "%s\ndefaults to \"%s\"",
-               envVar.doc,
-               envVar.default,
-             ),
-           envVar.name,
-         )
-       )
-     );
-
-let install = {
-  let doc = "Install another node version";
-  let man = help_secs;
-  let sdocs = Manpage.s_common_options;
-
-  let selectedVersion = {
-    let doc = "Install another version specified in $(docv).";
-    Arg.(
-      value & pos(0, some(string), None) & info([], ~docv="VERSION", ~doc)
-    );
-  };
-
-  (
-    Term.(const(Commands.install) $ selectedVersion),
-    Term.info(
-      "install",
-      ~envs,
-      ~version,
-      ~doc,
-      ~exits=Term.default_exits,
-      ~man,
-      ~sdocs,
-    ),
-  );
-};
-
-let uninstall = {
-  let doc = "Uninstall a node version";
-  let sdocs = Manpage.s_common_options;
-  let man = help_secs;
-
-  let selectedVersion = {
-    let doc = "Uninstall the node version specified in $(docv).";
-    Arg.(
-      required
-      & pos(0, some(string), None)
-      & info([], ~docv="VERSION", ~doc)
-    );
-  };
-
-  (
-    Term.(const(Commands.uninstall) $ selectedVersion),
-    Term.info(
-      "uninstall",
-      ~envs,
-      ~version,
-      ~doc,
-      ~exits=Term.default_exits,
-      ~man,
-      ~sdocs,
-    ),
-  );
-};
-
-let listLocal = {
-  let doc = "List all the installed versions";
-  let sdocs = Manpage.s_common_options;
-  let man = help_secs;
-
-  (
-    Term.(app(const(Commands.listLocal), const())),
-    Term.info(
-      "ls",
-      ~envs,
-      ~version,
-      ~doc,
-      ~exits=Term.default_exits,
-      ~man,
-      ~sdocs,
-    ),
-  );
-};
-
-let listRemote = {
-  let doc = "List all the versions upstream";
-  let sdocs = Manpage.s_common_options;
-  let man = help_secs;
-
-  let selectedVersion = {
-    let doc = "Filter by specific $(docv).";
-    Arg.(
-      value & pos(0, some(string), None) & info([], ~docv="VERSION", ~doc)
-    );
-  };
-
-  (
-    Term.(const(Commands.listRemote) $ selectedVersion),
-    Term.info(
-      "ls-remote",
-      ~version,
-      ~envs,
-      ~doc,
-      ~exits=Term.default_exits,
-      ~man,
-      ~sdocs,
-    ),
-  );
-};
-
-let use = {
-  let doc = "Switch to another installed node version";
-  let man = help_secs;
-  let sdocs = Manpage.s_common_options;
-
-  let quiet = {
-    let doc = "Don't print stuff";
-    Arg.(value & flag & info(["quiet"], ~doc));
-  };
-
-  let selectedVersion = {
-    let doc = "Switch to version $(docv).\nLeave empty to look for value from an `.nvmrc` or `.node-version` file";
-    Arg.(
-      value & pos(0, some(string), None) & info([], ~docv="VERSION", ~doc)
-    );
-  };
-
-  (
-    Term.(const(Commands.use) $ selectedVersion $ quiet),
-    Term.info(
-      "use",
-      ~envs,
-      ~version,
-      ~doc,
-      ~exits=Term.default_exits,
-      ~man,
-      ~sdocs,
-    ),
-  );
-};
-
-let current = {
-  let doc = "Display currently activated version";
-  let sdocs = Manpage.s_common_options;
-  let man = help_secs;
-
-  (
-    Term.(app(const(Commands.current), const())),
-    Term.info(
-      "current",
-      ~envs,
-      ~version,
-      ~doc,
-      ~exits=Term.default_exits,
-      ~man,
-      ~sdocs,
-    ),
-  );
-};
-
-let alias = {
-  let doc = "Alias a version";
-  let sdocs = Manpage.s_common_options;
-  let man = help_secs;
-
-  let selectedVersion = {
-    let doc = "The version to be aliased";
-    Arg.(
-      required
-      & pos(0, some(string), None)
-      & info([], ~docv="VERSION", ~doc)
-    );
-  };
-
-  let aliasName = {
-    let doc = "The alias name";
-    Arg.(
-      required & pos(1, some(string), None) & info([], ~docv="NAME", ~doc)
-    );
-  };
-
-  (
-    Term.(const(Commands.alias) $ selectedVersion $ aliasName),
-    Term.info(
-      "alias",
-      ~envs,
-      ~version,
-      ~doc,
-      ~exits=Term.default_exits,
-      ~man,
-      ~sdocs,
-    ),
-  );
-};
-
-let exec = {
-  let doc = "Execute a binary with the current Node.js in the PATH";
-  let man = help_secs;
-  let sdocs = Manpage.s_common_options;
-
-  let usingVersion = {
-    let doc = "Use a specific $(docv)";
-    Arg.(value & opt(some(string), None) & info(["using"], ~doc));
-  };
-
-  let usingFileVersion = {
-    let doc = "Use a version from a version file";
-    Arg.(value & flag & info(["using-file"], ~doc));
-  };
-
-  let command = {
-    let doc = "The $(docv) to execute";
-    Arg.(non_empty & pos_all(string, []) & info([], ~docv="COMMAND", ~doc));
-  };
-
-  (
-    Term.(const(Commands.exec) $ usingVersion $ usingFileVersion $ command),
-    Term.info(
-      "exec",
-      ~envs,
-      ~version,
-      ~doc,
-      ~exits=Term.default_exits,
-      ~man,
-      ~sdocs,
-    ),
-  );
-};
-
-let default = {
-  let doc = "Alias a version as default";
-  let man = help_secs;
-  let sdocs = Manpage.s_common_options;
-
-  let selectedVersion = {
-    let doc = "The version to be aliased as default";
-    Arg.(
-      required
-      & pos(0, some(string), None)
-      & info([], ~docv="VERSION", ~doc)
-    );
-  };
-
-  (
-    Term.(const(Commands.default) $ selectedVersion),
-    Term.info(
-      "default",
-      ~envs,
-      ~version,
-      ~doc,
-      ~exits=Term.default_exits,
-      ~man,
-      ~sdocs,
-    ),
-  );
-};
-
-let env = {
-  let doc = "Show env configurations";
-  let sdocs = Manpage.s_common_options;
-  let man = help_secs;
-
-  let isFishShell = {
-    let doc = "Output an env configuration for fish shell.";
-    Arg.(value & flag & info(["fish"], ~doc));
-  };
-
-  let shell = {
-    open Fnm.System.Shell;
-    let doc = "Specifies a specific shell type. If omitted, it will be inferred based on the process tree. $(docv)";
-    let shellChoices =
-      Arg.enum([("fish", Fish), ("bash", Bash), ("zsh", Zsh)]);
-    Arg.(value & opt(some(shellChoices), None) & info(["shell"], ~doc));
-  };
-
-  let nodeDistMirror = {
-    let doc = "https://nodejs.org/dist mirror";
-    Arg.(
-      value
-      & opt(string, "https://nodejs.org/dist")
-      & info(["node-dist-mirror"], ~doc)
-    );
-  };
-
-  let fnmDir = {
-    let doc = "The directory to store internal fnm data";
-    Arg.(
-      value
-      & opt(string, Fnm.Config.FNM_DIR.get())
-      & info(["fnm-dir"], ~doc)
-    );
-  };
-
-  let isMultishell = {
-    let doc = "Allow different node versions for each shell";
-    Arg.(value & flag & info(["multi"], ~doc));
-  };
-
-  let useOnCd = {
-    let doc = "Hook into the shell `cd` and automatically use the specified version for the project";
-    Arg.(value & flag & info(["use-on-cd"], ~doc));
-  };
-
-  let logLevel = {
-    let doc = "The log level of fnm commands, can be 'quiet', 'error' or 'all'";
-    Arg.(
-      value
-      & opt(
-          enum([
-            ("quiet", Fnm.LogLevel.Quiet),
-            ("error", Fnm.LogLevel.Error),
-            ("info", Fnm.LogLevel.Info),
-            ("all", Fnm.LogLevel.Debug),
-            ("debug", Fnm.LogLevel.Debug),
-          ]),
-          Fnm.Config.FNM_LOGLEVEL.get(),
-        )
-      & info(["log-level"], ~doc)
-    );
-  };
-
-  (
-    Term.(
-      const(Commands.env)
-      $ isFishShell
-      $ isMultishell
-      $ nodeDistMirror
-      $ fnmDir
-      $ shell
-      $ useOnCd
-      $ logLevel
-    ),
-    Term.info(
-      "env",
-      ~envs,
-      ~version,
-      ~doc,
-      ~exits=Term.default_exits,
-      ~man,
-      ~sdocs,
-    ),
-  );
-};
-
-let defaultCmd = {
-  let doc = "Manage Node.js installations";
-  let sdocs = Manpage.s_common_options;
-  let man = help_secs;
-  (
-    Term.(ret(const(_ => `Help((`Pager, None))) $ const())),
-    Term.info(
-      "fnm",
-      ~envs,
-      ~version,
-      ~doc,
-      ~exits=Term.default_exits,
-      ~man,
-      ~sdocs,
-    ),
-  );
-};
-
-let argv =
-  Sys.argv
-  |> Array.map(arg =>
-       switch (arg) {
-       | "-v" => "--version"
-       | x => x
-       }
-     );
-
-let _ =
-  Term.eval_choice(
-    defaultCmd,
-    [
-      install,
-      uninstall,
-      current,
-      use,
-      alias,
-      default,
-      listLocal,
-      listRemote,
-      env,
-      exec,
-    ],
-    ~argv,
-  )
-  |> Term.exit;
diff --git a/executable/Install.re b/executable/Install.re
deleted file mode 100644
index 64bc9e6..0000000
--- a/executable/Install.re
+++ /dev/null
@@ -1,167 +0,0 @@
-open Fnm;
-
-let mkDownloadsDir = () => {
-  let exists = Lwt_unix.file_exists(Directories.downloads);
-  if%lwt (exists |> Lwt.map(x => !x)) {
-    Logger.debug(
-      <Pastel>
-        "Creating "
-        <Pastel color=Pastel.Cyan> Directories.downloads </Pastel>
-        " for the first time"
-      </Pastel>,
-    );
-    let%lwt _ = System.mkdirp(Directories.downloads);
-    Lwt.return();
-  } else {
-    Lwt.return();
-  };
-};
-
-let download = (~version, ~filepath) => {
-  let tarDestination =
-    Filename.concat(
-      Directories.downloads,
-      version ++ Versions.Remote.downloadFileSuffix,
-    );
-
-  Logger.debug(
-    <Pastel>
-      "Downloading "
-      <Pastel color=Pastel.Cyan> filepath </Pastel>
-      " to "
-      <Pastel color=Pastel.Cyan> tarDestination </Pastel>
-    </Pastel>,
-  );
-
-  let%lwt _ = System.mkdirp(Filename.dirname(tarDestination));
-  let%lwt _ = Http.download(filepath, ~into=tarDestination);
-  let extractionDestination =
-    Filename.concat(Directories.nodeVersions, version);
-
-  Logger.debug(
-    <Pastel>
-      "Extracting "
-      <Pastel color=Pastel.Cyan> tarDestination </Pastel>
-      " to "
-      <Pastel color=Pastel.Cyan> extractionDestination </Pastel>
-    </Pastel>,
-  );
-
-  Logger.info(
-    <Pastel>
-      "Version "
-      <Pastel color=Pastel.Cyan> version </Pastel>
-      " was successfully downloaded"
-    </Pastel>,
-  );
-
-  let%lwt _ =
-    Compression.extractFile(tarDestination, ~into=extractionDestination);
-  Lwt.return_unit;
-};
-
-let main = (~version as versionName) => {
-  let%lwt os = System.NodeOS.get()
-  and arch = System.NodeArch.get()
-  and versionName =
-    switch (versionName) {
-    | Some(versionName) => Lwt.return(versionName)
-    | None => Dotfiles.getVersion()
-    };
-
-  let versionName = Versions.format(versionName);
-
-  let%lwt versionName =
-    switch (versionName) {
-    | "latest-*" =>
-      switch%lwt (VersionListingLts.getLatest()) {
-      | Error(err) =>
-        raise(VersionListingLts.Problem_with_finding_latest_lts(err))
-      | Ok({VersionListingLts.lts, _}) =>
-        Printf.sprintf("latest-%s", lts) |> Lwt.return
-      }
-    | _ => Lwt.return(versionName)
-    };
-
-  Logger.debug(
-    <Pastel>
-      "Looking for node "
-      <Pastel color=Pastel.Cyan> versionName </Pastel>
-      " for "
-      <Pastel color=Pastel.Cyan>
-        {System.NodeOS.toString(os)}
-        " "
-        {System.NodeArch.toString(arch)}
-      </Pastel>
-    </Pastel>,
-  );
-
-  let%lwt (fullVersionName, filepath) =
-    Versions.getFileToDownload(~version=versionName, ~os, ~arch);
-
-  let%lwt isAlreadyInstalled = Versions.isInstalled(fullVersionName);
-
-  let%lwt _ =
-    if (isAlreadyInstalled) {
-      Logger.error(
-        <Pastel>
-          "Version "
-          <Pastel color=Pastel.Cyan> fullVersionName </Pastel>
-          " is already installed."
-        </Pastel>,
-      );
-      Lwt.return_unit;
-    } else {
-      download(~version=fullVersionName, ~filepath);
-    };
-
-  let%lwt _ =
-    if (Base.String.is_prefix(versionName, ~prefix="latest")) {
-      let%lwt _ = Alias.run(~name=versionName, ~version=fullVersionName);
-      Lwt.return_unit;
-    } else {
-      Lwt.return_unit;
-    };
-
-  Lwt.return_ok();
-};
-
-let run = (~version) =>
-  try%lwt(main(~version)) {
-  | Versions.No_Download_For_System(os, arch) =>
-    Logger.error(
-      <Pastel>
-        "Version exists, but can't find a file for your system:\n"
-        "  OS:           "
-        <Pastel color=Pastel.Cyan> {System.NodeOS.toString(os)} </Pastel>
-        "\n"
-        "  Architecture: "
-        <Pastel color=Pastel.Cyan> {System.NodeArch.toString(arch)} </Pastel>
-      </Pastel>,
-    );
-    Lwt.return_error(1);
-  | Versions.Version_not_found(version) =>
-    Logger.error(
-      <Pastel>
-        "Version "
-        <Pastel color=Pastel.Cyan> version </Pastel>
-        " not found!"
-      </Pastel>,
-    );
-    Lwt.return_error(1);
-  | VersionListingLts.Problem_with_finding_latest_lts(
-      VersionListingLts.Cant_find_latest_lts,
-    ) =>
-    Logger.error(<Pastel color=Pastel.Red> "Can't find latest LTS" </Pastel>);
-    exit(1);
-  | VersionListingLts.Problem_with_finding_latest_lts(
-      VersionListingLts.Cant_parse_remote_version_listing(reason),
-    ) =>
-    Logger.error(
-      <Pastel color=Pastel.Red>
-        "Can't parse json of the response:\n"
-        reason
-      </Pastel>,
-    );
-    Lwt.return_error(1);
-  };
diff --git a/executable/ListLocal.re b/executable/ListLocal.re
deleted file mode 100644
index e0b9b30..0000000
--- a/executable/ListLocal.re
+++ /dev/null
@@ -1,43 +0,0 @@
-open Fnm;
-
-exception Cant_read_local_versions;
-
-let main = () =>
-  Versions.Local.(
-    {
-      let%lwt versions =
-        try%lwt(Versions.getInstalledVersions()) {
-        | _ => Lwt.fail(Cant_read_local_versions)
-        }
-      and currentVersion = Versions.getCurrentVersion();
-
-      Console.log("The following versions are installed:");
-
-      versions
-      |> List.iter(version => {
-           let color =
-             switch (currentVersion) {
-             | None => None
-             | Some(x) when x.name == version.name => Some(Pastel.Cyan)
-             | Some(_) => None
-             };
-           let aliases =
-             List.length(version.aliases) === 0
-               ? ""
-               : Printf.sprintf(
-                   " (%s)",
-                   version.aliases |> String.concat(", "),
-                 );
-           Console.log(<Pastel ?color> "* " {version.name} aliases </Pastel>);
-         });
-
-      Lwt.return_ok();
-    }
-  );
-
-let run = () =>
-  try%lwt(main()) {
-  | Cant_read_local_versions =>
-    Console.log("No versions installed!");
-    Lwt.return_ok();
-  };
diff --git a/executable/ListRemote.re b/executable/ListRemote.re
deleted file mode 100644
index 4b989ac..0000000
--- a/executable/ListRemote.re
+++ /dev/null
@@ -1,50 +0,0 @@
-open Fnm;
-
-let run = (~version as maybeVersionName) => {
-  Console.log("Looking for some node versions upstream...");
-
-  let%lwt versions = Versions.getRemoteVersions()
-  and currentVersion = Versions.getCurrentVersion();
-
-  let versions =
-    switch (maybeVersionName) {
-    | None => versions
-    | Some(versionName) =>
-      let formattedVersionName = Versions.format(versionName);
-      versions
-      |> Versions.(
-           List.filter(v =>
-             isVersionFitsPrefix(formattedVersionName, Remote.(v.name))
-             || v.name == formattedVersionName
-           )
-         );
-    };
-
-  switch (versions) {
-  | [] =>
-    Console.log(
-      <Pastel color=Pastel.Red>
-        "No versions found that match your criteria."
-      </Pastel>,
-    );
-    Lwt.return_error(1);
-
-  | _ =>
-    versions
-    |> List.iter(version => {
-         open Versions.Remote;
-         let str = "* " ++ version.name;
-         let color =
-           switch (currentVersion, version.installed) {
-           | (Some({name: currentVersionName, _}), _)
-               when currentVersionName == version.name =>
-             Some(Pastel.Cyan)
-           | (_, true) => Some(Pastel.Green)
-           | (_, false) => None
-           };
-         ();
-         Console.log(<Pastel ?color> str </Pastel>);
-       });
-    Lwt.return_ok();
-  };
-};
diff --git a/executable/Uninstall.re b/executable/Uninstall.re
deleted file mode 100644
index 75a8855..0000000
--- a/executable/Uninstall.re
+++ /dev/null
@@ -1,57 +0,0 @@
-open Fnm;
-open Lwt.Infix;
-
-let run = (~version) => {
-  let%lwt matchingLocalVersions =
-    LocalVersionResolver.getMatchingLocalVersions(version);
-
-  switch (matchingLocalVersions) {
-  | [] =>
-    Logger.error(
-      <Pastel>
-        "The version "
-        <Pastel color=Pastel.Cyan> version </Pastel>
-        " is not installed."
-      </Pastel>,
-    );
-    Lwt.return_error(1);
-  | [installedVersion] =>
-    Logger.debug(
-      <Pastel>
-        "Uninstalling node "
-        <Pastel color=Pastel.Cyan>
-          Versions.Local.(installedVersion.name)
-        </Pastel>
-      </Pastel>,
-    );
-    let%lwt _ = Versions.Local.remove(installedVersion);
-    Logger.info(
-      <Pastel>
-        "Node version "
-        <Pastel color=Pastel.Cyan>
-          Versions.Local.(installedVersion.name)
-        </Pastel>
-        " has correctly been removed."
-      </Pastel>,
-    );
-    Lwt.return_ok();
-  | _ =>
-    Logger.info(
-      <Pastel> "There are multiple versions matching your criteria:" </Pastel>,
-    );
-    matchingLocalVersions
-    |> List.iter(matchingVersion =>
-         Logger.info(
-           <Pastel color=Pastel.Cyan>
-             Versions.Local.(matchingVersion.name)
-           </Pastel>,
-         )
-       );
-    Logger.info(
-      <Pastel color=Pastel.Red>
-        "\nPlease run the command again with the correct version."
-      </Pastel>,
-    );
-    Lwt.return_error(1);
-  };
-};
diff --git a/executable/Use.re b/executable/Use.re
deleted file mode 100644
index a4c58c5..0000000
--- a/executable/Use.re
+++ /dev/null
@@ -1,142 +0,0 @@
-open Fnm;
-
-let lwtIgnore = lwt => Lwt.catch(() => lwt, _ => Lwt.return());
-
-let info = (~quiet, arg) =>
-  if (!quiet) {
-    Logger.info(arg);
-  };
-
-let debug = (~quiet, arg) =>
-  if (!quiet) {
-    Logger.debug(arg);
-  };
-
-let error = (~quiet, arg) =>
-  if (!quiet) {
-    Logger.error(arg);
-  };
-
-let switchVersion = (~version, ~quiet) => {
-  let info = info(~quiet);
-  let debug = debug(~quiet);
-  let%lwt parsedVersion = LocalVersionResolver.getVersion(version);
-
-  let%lwt versionPath =
-    switch (parsedVersion) {
-    | Local(version) => Versions.Local.toDirectory(version) |> Lwt.return
-    | Alias(alias) => Versions.Aliases.toDirectory(alias) |> Lwt.return
-    | System => Versions.Local.systemVersion.fullPath |> Lwt.return
-    };
-
-  let versionName =
-    switch (parsedVersion) {
-    | Local(v) => v
-    | Alias(v) => v
-    | System => "system"
-    };
-
-  let source = Directories.currentVersion;
-
-  debug(
-    <Pastel>
-      "Linking "
-      <Pastel color=Pastel.Cyan> source </Pastel>
-      " to "
-      <Pastel color=Pastel.Cyan> versionPath </Pastel>
-    </Pastel>,
-  );
-
-  let%lwt _ = Lwt_unix.unlink(Directories.currentVersion) |> lwtIgnore;
-  let%lwt _ = Lwt_unix.symlink(versionPath, Directories.currentVersion)
-  and defaultAliasExists = Lwt_unix.file_exists(Directories.defaultVersion);
-
-  let%lwt _ =
-    if (!defaultAliasExists) {
-      Versions.Aliases.set(~alias="default", ~versionPath);
-    } else {
-      Lwt.return();
-    };
-
-  info(
-    <Pastel>
-      "Using "
-      <Pastel color=Pastel.Cyan> versionName </Pastel>
-    </Pastel>,
-  );
-
-  Lwt.return();
-};
-
-let main = (~version as providedVersion, ~quiet) => {
-  let%lwt version =
-    switch (providedVersion) {
-    | Some(version) => Lwt.return(version)
-    | None => Dotfiles.getVersion()
-    };
-  let%lwt () = switchVersion(~version, ~quiet);
-  Lwt.return_ok();
-};
-
-let rec askIfInstall = (~version, ~quiet, retry) => {
-  let%lwt _ =
-    Lwt_io.write(
-      Lwt_io.stderr,
-      <Pastel color=Pastel.Red> "Do you want to install it? [y/n] " </Pastel>,
-    );
-  switch%lwt (Lwt_io.read_line(Lwt_io.stdin)) {
-  | "Y"
-  | "y" =>
-    let%lwt res = Install.run(~version);
-    switch (res) {
-    | Error(_) => Lwt.return_error(1)
-    | Ok(_) => retry(~version, ~quiet)
-    };
-  | "N"
-  | "n" =>
-    let%lwt () = Lwt_io.write_line(Lwt_io.stderr, "Not installing!");
-    Lwt.return_ok();
-  | _ =>
-    let%lwt _ =
-      Lwt_io.write_line(Lwt_io.stderr, "Invalid response. Please try again:");
-    askIfInstall(~version, ~quiet, retry);
-  };
-};
-
-let rec run = (~version, ~quiet) =>
-  try%lwt(main(~version, ~quiet)) {
-  | LocalVersionResolver.Version_Not_Installed(versionString) =>
-    error(
-      ~quiet,
-      <Pastel color=Pastel.Red>
-        "The following version is not installed: "
-        versionString
-      </Pastel>,
-    );
-    if (Fnm.Config.FNM_INTERACTIVE_CLI.get()) {
-      askIfInstall(~version, ~quiet, run);
-    } else {
-      Lwt.return_error(1);
-    };
-  | Dotfiles.Conflicting_Dotfiles_Found(v1, v2) =>
-    error(
-      ~quiet,
-      <Pastel color=Pastel.Red>
-        "Can't infer version from dotfiles: .node-version and .nvmrc have differing version strings:\n"
-        "  * "
-        v1
-        "\n"
-        "  * "
-        v2
-      </Pastel>,
-    );
-    Lwt.return_error(1);
-  | Dotfiles.Version_Not_Provided =>
-    error(
-      ~quiet,
-      <Pastel color=Pastel.Red>
-        "No .nvmrc or .node-version file was found in the current directory. Please provide a version number."
-      </Pastel>,
-    );
-    Lwt.return_error(1);
-  };
diff --git a/executable/dune b/executable/dune
deleted file mode 100644
index 439a9f4..0000000
--- a/executable/dune
+++ /dev/null
@@ -1,13 +0,0 @@
-
-; !!!! This dune file is generated from the package.json file by pesy. If you modify it by hand
-; !!!! your changes will be undone! Instead, edit the package.json and then rerun 'esy pesy' at the project root.
-; !!!! If you want to stop using pesy and manage this file by hand, change package.json's 'esy.build' command to: refmterr dune build -p  fnm
-(executable
-   ; The entrypoint module
-   (name FnmApp)  ;  From package.json main field
-   ; The name of the executable (runnable via esy x fnm.exe) 
-   (public_name fnm.exe)  ;  From package.json name field
-   (libraries  base cmdliner lwt lambdasoup console.lib pastel.lib fnm.lib ) ;  From package.json require field (array of strings)
-   (flags ( -ccopt -lgmp )) ;  From package.json flags field
-   (preprocess ( pps lwt_ppx ppx_let ))  ; From package.json preprocess field
-)
\ No newline at end of file
diff --git a/feature_tests/aliases/run.sh b/feature_tests/aliases/run.sh
deleted file mode 100644
index 09379a2..0000000
--- a/feature_tests/aliases/run.sh
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/bin/bash
-
-set -e
-
-fnm install 6.11.3
-fnm install 8.11.3
-
-fnm alias 8.11.3 oldie
-fnm alias 6.11.3 older
-fnm default 6.11.3 
-
-VERSIONS_INSTALLED=$(fnm ls)
-
-echo "$VERSIONS_INSTALLED" | grep 8.11.3 | grep oldie
-echo "$VERSIONS_INSTALLED" | grep 6.11.3 | grep older
-echo "$VERSIONS_INSTALLED" | grep 6.11.3 | grep default
diff --git a/feature_tests/almost-matching-dotfiles/.node-version b/feature_tests/almost-matching-dotfiles/.node-version
deleted file mode 100644
index 933dbb1..0000000
--- a/feature_tests/almost-matching-dotfiles/.node-version
+++ /dev/null
@@ -1 +0,0 @@
-11.10.0
diff --git a/feature_tests/almost-matching-dotfiles/.nvmrc b/feature_tests/almost-matching-dotfiles/.nvmrc
deleted file mode 100644
index 6af635d..0000000
--- a/feature_tests/almost-matching-dotfiles/.nvmrc
+++ /dev/null
@@ -1 +0,0 @@
-v11.10.0
diff --git a/feature_tests/almost-matching-dotfiles/run.sh b/feature_tests/almost-matching-dotfiles/run.sh
deleted file mode 100755
index b5850c2..0000000
--- a/feature_tests/almost-matching-dotfiles/run.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/bash
-
-#set -e
-
-eval $(fnm env)
-fnm install
-fnm use
-
-echo node --version
-if [ "$(node --version)" != "v11.10.0" ]; then
-  echo "Expected Node version is not v11.10.0!"
-  exit 1
-fi
diff --git a/feature_tests/basic/run.sh b/feature_tests/basic/run.sh
deleted file mode 100644
index 737f669..0000000
--- a/feature_tests/basic/run.sh
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/bin/bash
-
-set -e
-
-eval $(fnm env)
-fnm install v8.11.3
-fnm use v8.11.3
-
-if [ "$(node --version)" != "v8.11.3" ]; then
-  echo "Node version is not v8.11.3!"
-  exit 1
-fi
diff --git a/feature_tests/current/run.sh b/feature_tests/current/run.sh
deleted file mode 100755
index d94722c..0000000
--- a/feature_tests/current/run.sh
+++ /dev/null
@@ -1,35 +0,0 @@
-#!/bin/bash
-
-set -e
-
-PATH="$(pwd)":$PATH # simulating a custom `node`
-
-eval "$(fnm env)"
-
-if [ "$(fnm current)" != "none" ]; then
-  echo "Expected currently activated version is not none!"
-  exit 1
-fi
-
-fnm install v8.11.3
-fnm install v10.10.0
-fnm use v8.11.3
-
-if [ "$(fnm current)" != "v8.11.3" ]; then
-  echo "Expected currently activated version is not v8.11.3!"
-  exit 1
-fi
-
-fnm use v10.10.0
-
-if [ "$(fnm current)" != "v10.10.0" ]; then
-  echo "Expected currently activated version is not v10.10.0!"
-  exit 1
-fi
-
-fnm use system
-
-if [ "$(fnm current)" != "system" ]; then
-  echo "Expected currently activated version is not system!"
-  exit 1
-fi
diff --git a/feature_tests/exec/run.sh b/feature_tests/exec/run.sh
deleted file mode 100755
index f5a3888..0000000
--- a/feature_tests/exec/run.sh
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/bin/bash
-
-set -e
-
-fnm install v6.10.0
-fnm install v8.10.0
-fnm install v10.10.0
-fnm use v8.10.0
-
-fnm exec -- node -v | grep "v8.10.0"
-fnm exec --using 6 -- node -v | grep "v6.10.0"
-fnm exec --using 10 -- node -v | grep "v10.10.0"
diff --git a/feature_tests/existing_installation/run.sh b/feature_tests/existing_installation/run.sh
deleted file mode 100644
index 9789ee5..0000000
--- a/feature_tests/existing_installation/run.sh
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/bash
-
-set -e
-
-eval `fnm env`
-
-echo "> Installing for the first time..."
-fnm install v8.11.3
-echo "> Installing the second time..."
-fnm install v8.11.3 2>&1 >/dev/null | grep "already installed"
-
-if [ "$?" != "0" ]; then
-  echo "The second installation should say it is already installed"
-  exit 1
-fi
diff --git a/feature_tests/fish/run.fish b/feature_tests/fish/run.fish
deleted file mode 100644
index 8234133..0000000
--- a/feature_tests/fish/run.fish
+++ /dev/null
@@ -1,11 +0,0 @@
-#!/usr/bin/env fish
-
-fnm env --fish | source
-
-fnm install v8.11.3
-fnm use v8.11.3
-
-if test (node --version) != "v8.11.3"
-  echo "Node version is not v8.11.3!"
-  exit 1
-end
diff --git a/feature_tests/fish/run.sh b/feature_tests/fish/run.sh
deleted file mode 100755
index df4a3ec..0000000
--- a/feature_tests/fish/run.sh
+++ /dev/null
@@ -1,11 +0,0 @@
-#!/bin/bash
-
-set -e
-
-DIRECTORY=`dirname $0`
-
-if hash fish 2>/dev/null; then
-  fish $DIRECTORY/run.fish
-else
-  echo "Skipping: \`fish\` is not installed"
-fi
diff --git a/feature_tests/latest-lts/.nvmrc b/feature_tests/latest-lts/.nvmrc
deleted file mode 100644
index b009dfb..0000000
--- a/feature_tests/latest-lts/.nvmrc
+++ /dev/null
@@ -1 +0,0 @@
-lts/*
diff --git a/feature_tests/latest-lts/run.sh b/feature_tests/latest-lts/run.sh
deleted file mode 100755
index f47e0f7..0000000
--- a/feature_tests/latest-lts/run.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/bin/bash
-
-set -e
-
-eval "$(fnm env --multi)"
-
-fnm install
-fnm use
-
-fnm ls | grep latest-
diff --git a/feature_tests/list_local_with_nothing_installed/run.sh b/feature_tests/list_local_with_nothing_installed/run.sh
deleted file mode 100644
index dcd9deb..0000000
--- a/feature_tests/list_local_with_nothing_installed/run.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-#!/bin/bash
-
-set -e
-
-eval $(fnm env)
-fnm ls
diff --git a/feature_tests/log-level-error/run.sh b/feature_tests/log-level-error/run.sh
deleted file mode 100644
index cdcd053..0000000
--- a/feature_tests/log-level-error/run.sh
+++ /dev/null
@@ -1,11 +0,0 @@
-#!/bin/bash
-
-set -e
-
-eval $(fnm env --log-level=error)
-ALIAS="$(fnm install 8.11.3 && (fnm alias 123 abc 2>&1 || true))"
-
-if [ "$ALIAS" == "" ]; then
-  echo "Expected the output to contain errors"
-  exit 1
-fi
diff --git a/feature_tests/log-level-quiet/run.sh b/feature_tests/log-level-quiet/run.sh
deleted file mode 100644
index 4a541b2..0000000
--- a/feature_tests/log-level-quiet/run.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/bash
-
-set -e
-
-eval $(fnm env --log-level=quiet)
-INSTALL="$(fnm install v8.11.3 && fnm use v8.11.3 && fnm alias v8.11.3 something)"
-
-OUTPUT="$INSTALL"
-if [ "$OUTPUT" != "" ]; then
-  echo "Expected the output to be empty, instead got:"
-  echo $OUTPUT
-  exit 1
-fi
diff --git a/feature_tests/matching-dotfiles/.node-version b/feature_tests/matching-dotfiles/.node-version
deleted file mode 100644
index 933dbb1..0000000
--- a/feature_tests/matching-dotfiles/.node-version
+++ /dev/null
@@ -1 +0,0 @@
-11.10.0
diff --git a/feature_tests/matching-dotfiles/.nvmrc b/feature_tests/matching-dotfiles/.nvmrc
deleted file mode 100644
index 933dbb1..0000000
--- a/feature_tests/matching-dotfiles/.nvmrc
+++ /dev/null
@@ -1 +0,0 @@
-11.10.0
diff --git a/feature_tests/matching-dotfiles/run.sh b/feature_tests/matching-dotfiles/run.sh
deleted file mode 100755
index fa58c8a..0000000
--- a/feature_tests/matching-dotfiles/run.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/bash
-
-set -e
-
-eval $(fnm env)
-fnm install
-fnm use
-
-echo node --version
-if [ "$(node --version)" != "v11.10.0" ]; then
-  echo "Expected Node version is not v11.10.0!"
-  exit 1
-fi
diff --git a/feature_tests/multishell/run.sh b/feature_tests/multishell/run.sh
deleted file mode 100644
index b7efcf6..0000000
--- a/feature_tests/multishell/run.sh
+++ /dev/null
@@ -1,31 +0,0 @@
-#!/bin/bash
-
-set -e
-
-eval $(fnm env)
-
-fnm install v8.11.3
-fnm install v11.9.0
-
-fnm use v8.11.3
-
-bash -c '
-  set -e
-  eval $(fnm env --multi)
-  fnm use v11.9.0
-  echo "> verifying version v11.9.0 for child bash"
-  if [ "$(node -v)" == "v11.9.0" ]; then
-    echo "Okay!"
-  else
-    echo "Node version should be v11.9.0 in the bash fork"
-    exit 1
-  fi
-'
-
-echo "> verifying version v8.11.3 for parent bash"
-if [ "$(node -v)" == "v8.11.3" ]; then
-  echo "Okay!"
-else
-  echo "Node version should be v8.11.3 in the base bash"
-  exit 1
-fi
diff --git a/feature_tests/node-version/.node-version b/feature_tests/node-version/.node-version
deleted file mode 100644
index 933dbb1..0000000
--- a/feature_tests/node-version/.node-version
+++ /dev/null
@@ -1 +0,0 @@
-11.10.0
diff --git a/feature_tests/node-version/run.sh b/feature_tests/node-version/run.sh
deleted file mode 100644
index 6c017ea..0000000
--- a/feature_tests/node-version/run.sh
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/bin/bash
-
-set -e
-
-eval $(fnm env)
-fnm install
-fnm use
-
-if [ "$(node --version)" != "v11.10.0" ]; then
-  echo "Node version is not v11.10.0!"
-  exit 1
-fi
diff --git a/feature_tests/node_mirror_installation/run.sh b/feature_tests/node_mirror_installation/run.sh
deleted file mode 100644
index b2afdf9..0000000
--- a/feature_tests/node_mirror_installation/run.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/bash
-
-set -e
-
-eval `fnm env --node-dist-mirror="https://cnpmjs.org/dist"`
-
-fnm install v8.11.3
-fnm use v8.11.3
-
-if [ "$(node -v)" != "v8.11.3" ]; then
-  echo "Node version is not v8.11.3!"
-  exit 1
-fi
diff --git a/feature_tests/nvmrc/.nvmrc b/feature_tests/nvmrc/.nvmrc
deleted file mode 100644
index fe6d2ac..0000000
--- a/feature_tests/nvmrc/.nvmrc
+++ /dev/null
@@ -1 +0,0 @@
-10.9.0
diff --git a/feature_tests/nvmrc/run.sh b/feature_tests/nvmrc/run.sh
deleted file mode 100644
index a4941a9..0000000
--- a/feature_tests/nvmrc/run.sh
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/bin/bash
-
-set -e
-
-eval $(fnm env)
-fnm install
-fnm use
-
-if [ "$(node --version)" != "v10.9.0" ]; then
-  echo "Node version is not v10.9.0!"
-  exit 1
-fi
diff --git a/feature_tests/partial_semver/run.sh b/feature_tests/partial_semver/run.sh
deleted file mode 100644
index 9be109a..0000000
--- a/feature_tests/partial_semver/run.sh
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/bin/bash
-
-set -e
-
-eval `fnm env --multi`
-
-fnm install 6 # no new versions would be issued for this unsupported version
-fnm install 8.11.3
-
-fnm use 6
-if [ "$(node -v)" != "v6.17.1" ]; then
-  echo "Node version mismatch: $(node -v). Expected: v6.17.1"
-  exit 1
-fi
-
-fnm use 8
-if [ "$(node -v)" != "v8.11.3" ]; then
-  echo "Node version mismatch: $(node -v). Expected: v8.11.3"
-  exit 1
-fi
diff --git a/feature_tests/run.sh b/feature_tests/run.sh
deleted file mode 100755
index 2aef50a..0000000
--- a/feature_tests/run.sh
+++ /dev/null
@@ -1,45 +0,0 @@
-#!/bin/bash
-
-set -e
-
-DIRECTORY="$(dirname "$0")"
-BINARY="$1"
-SPECIFIC_TEST="$2"
-TEMP_DIR_BASE=$(pwd)/$DIRECTORY/.tmp
-TEMP_BINARY_PATH=$TEMP_DIR_BASE/bin
-TEMP_FNM_DIR=$TEMP_DIR_BASE/.fnm
-
-if [ "$BINARY" == "" ]; then
-  echo "No binary supplied!"
-  exit 1
-fi
-
-echo "using fnm=$BINARY"
-
-rm -rf "$TEMP_DIR_BASE"
-mkdir "$TEMP_DIR_BASE" "$TEMP_BINARY_PATH"
-cp "$BINARY" "$TEMP_BINARY_PATH/fnm"
-
-run_test() {
-  test_file="$1"
-  rm -rf "$TEMP_FNM_DIR"
-
-  TEST_BASENAME="$(basename "$test_file")"
-  TEST_DIRNAME="$(dirname "$test_file")"
-
-  echo "Running test in $test_file"
-  echo "Running test in $test_file" | sed "s/./-/g"
-  (cd "$TEST_DIRNAME" && FNM_DIR="$TEMP_FNM_DIR" PATH="$TEMP_BINARY_PATH:$PATH" bash "$TEST_BASENAME")
-  echo ""
-  echo " -> Finished!"
-
-  rm -rf "$TEMP_FNM_DIR"
-}
-
-if [ "$SPECIFIC_TEST" == "" ]; then
-  for test_file in "$DIRECTORY"/*/run.sh; do
-    run_test "$test_file"
-  done
-else
-  run_test "$SPECIFIC_TEST"
-fi
diff --git a/feature_tests/system_node/node b/feature_tests/system_node/node
deleted file mode 100755
index 08ad704..0000000
--- a/feature_tests/system_node/node
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/bash
-
-echo "custom build"
diff --git a/feature_tests/system_node/run.sh b/feature_tests/system_node/run.sh
deleted file mode 100755
index 32d3140..0000000
--- a/feature_tests/system_node/run.sh
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/bin/bash
-
-set -e
-
-PATH="$(pwd)":$PATH # simulating a custom `node`
-
-eval "$(fnm env --multi)"
-fnm install 10
-fnm use 10
-fnm use system
-
-NVER="$(node -v)"
-if [ "$NVER" != "custom build" ]; then
-  echo "Expected \`node -v\` to be resolved to the system Node.js, but got $NVER"
-  exit 1
-fi
diff --git a/feature_tests/use_nvmrc_lts/.nvmrc b/feature_tests/use_nvmrc_lts/.nvmrc
deleted file mode 100644
index 0312896..0000000
--- a/feature_tests/use_nvmrc_lts/.nvmrc
+++ /dev/null
@@ -1 +0,0 @@
-lts/dubnium
diff --git a/feature_tests/use_nvmrc_lts/run.sh b/feature_tests/use_nvmrc_lts/run.sh
deleted file mode 100644
index bace121..0000000
--- a/feature_tests/use_nvmrc_lts/run.sh
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/bin/bash
-
-set -e
-
-eval "$(fnm env)"
-fnm install
-fnm use
-
-fnm ls | grep latest-dubnium
diff --git a/feature_tests/use_on_cd/dot node version/.node-version b/feature_tests/use_on_cd/dot node version/.node-version
deleted file mode 100644
index dba04c1..0000000
--- a/feature_tests/use_on_cd/dot node version/.node-version	
+++ /dev/null
@@ -1 +0,0 @@
-8.11.3
diff --git a/feature_tests/use_on_cd/nvmrc/.nvmrc b/feature_tests/use_on_cd/nvmrc/.nvmrc
deleted file mode 100644
index dba04c1..0000000
--- a/feature_tests/use_on_cd/nvmrc/.nvmrc
+++ /dev/null
@@ -1 +0,0 @@
-8.11.3
diff --git a/feature_tests/use_on_cd/run.sh b/feature_tests/use_on_cd/run.sh
deleted file mode 100644
index d89db2d..0000000
--- a/feature_tests/use_on_cd/run.sh
+++ /dev/null
@@ -1,106 +0,0 @@
-#!/bin/bash
-
-set -e
-
-eval "$(fnm env --multi)"
-fnm install 6.11.3
-fnm install 8.11.3
-fnm use 6.11.3
-
-if hash zsh 2>/dev/null; then
-  echo ' > Running test on Zsh'
-
-  zsh -c '
-    set -e
-
-    eval "`fnm env --multi --use-on-cd`"
-
-    fnm use 6.11.3
-
-    NODE_VERSION=$(node -v)
-    if [ "$NODE_VERSION" != "v6.11.3" ]; then
-      echo "Failed: Node version ($NODE_VERSION) is not v6.11.3"
-      exit 1
-    fi
-
-    cd nvmrc
-
-    NODE_VERSION=$(node -v)
-    if [ "$NODE_VERSION" != "v8.11.3" ]; then
-      echo "Failed: Node version ($NODE_VERSION) is not v8.11.3"
-      exit 1
-    fi
-
-    fnm use 6.11.3
-    cd ../dot\ node\ version
-
-    NODE_VERSION=$(node -v)
-    if [ "$NODE_VERSION" != "v8.11.3" ]; then
-      echo "Failed: Node version ($NODE_VERSION) is not v8.11.3"
-      exit 1
-    fi
-  '
-else
-  echo "Skipping zsh test: \`zsh\` is not installed"
-fi
-
-if hash fish 2>/dev/null; then
-  echo ' > Running test on Fish'
-
-  fish -c '
-    fnm env --multi --use-on-cd | source
-
-    fnm use 6.11.3
-
-    set NODE_VERSION (node -v)
-    if test "$NODE_VERSION" != "v6.11.3"
-      echo "Failed: Node version ($NODE_VERSION) is not v6.11.3"
-      exit 1
-    end
-
-    cd nvmrc
-
-    set NODE_VERSION (node -v)
-    if test "$NODE_VERSION" != "v8.11.3"
-      echo "Failed: Node version ($NODE_VERSION) is not v8.11.3"
-      exit 1
-    end
-
-    fnm use 6.11.3
-    cd ../dot\ node\ version
-
-    set NODE_VERSION (node -v)
-    if test "$NODE_VERSION" != "v8.11.3"
-      echo "Failed: Node version ($NODE_VERSION) is not v8.11.3"
-      exit 1
-    end
-  '
-else
-  echo "Skipping fish test: \`zsh\` is not installed"
-fi
-
-echo " > Running test on Bash..."
-bash -c '
-  set -e
-  shopt -s expand_aliases
-  eval "`fnm env --multi --use-on-cd`"
-  fnm use 6.11.3
-  NODE_VERSION=$(node -v)
-  if [ "$NODE_VERSION" != "v6.11.3" ]; then
-    echo "Failed: Node version ($NODE_VERSION) is not v6.11.3"
-    exit 1
-  fi
-  cd nvmrc
-  NODE_VERSION=$(node -v)
-  if [ "$NODE_VERSION" != "v8.11.3" ]; then
-    echo "Failed: Node version ($NODE_VERSION) is not v8.11.3"
-    exit 1
-  fi
-  fnm use 6.11.3
-  cd ../dot\ node\ version
-  NODE_VERSION=$(node -v)
-  if [ "$NODE_VERSION" != "v8.11.3" ]; then
-    echo "Failed: Node version ($NODE_VERSION) is not v8.11.3"
-    exit 1
-  fi
-'
diff --git a/fmt.esy.lock/.gitattributes b/fmt.esy.lock/.gitattributes
deleted file mode 100644
index 25366ae..0000000
--- a/fmt.esy.lock/.gitattributes
+++ /dev/null
@@ -1,3 +0,0 @@
-
-# Set eol to LF so files aren't converted to CRLF-eol on Windows.
-* text eol=lf
diff --git a/fmt.esy.lock/.gitignore b/fmt.esy.lock/.gitignore
deleted file mode 100644
index a221be2..0000000
--- a/fmt.esy.lock/.gitignore
+++ /dev/null
@@ -1,3 +0,0 @@
-
-# Reset any possible .gitignore, we want all esy.lock to be un-ignored.
-!*
diff --git a/fmt.esy.lock/index.json b/fmt.esy.lock/index.json
deleted file mode 100644
index 012ddea..0000000
--- a/fmt.esy.lock/index.json
+++ /dev/null
@@ -1,359 +0,0 @@
-{
-  "checksum": "86b3a839605635d3ce86e1467d798857",
-  "root": "fmt@link-dev:./fmt.json",
-  "node": {
-    "ocaml@4.6.1000@d41d8cd9": {
-      "id": "ocaml@4.6.1000@d41d8cd9",
-      "name": "ocaml",
-      "version": "4.6.1000",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/ocaml/-/ocaml-4.6.1000.tgz#sha1:99525ef559353481396454f9a072dedc96b52f44"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [],
-      "devDependencies": []
-    },
-    "fmt@link-dev:./fmt.json": {
-      "id": "fmt@link-dev:./fmt.json",
-      "name": "fmt",
-      "version": "link-dev:./fmt.json",
-      "source": { "type": "link-dev", "path": ".", "manifest": "fmt.json" },
-      "overrides": [],
-      "dependencies": [],
-      "devDependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@esy-ocaml/reason@3.5.2@d41d8cd9"
-      ]
-    },
-    "@opam/result@opam:1.4@dc720aef": {
-      "id": "@opam/result@opam:1.4@dc720aef",
-      "name": "@opam/result",
-      "version": "opam:1.4",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://opam.ocaml.org/cache/md5/d3/d3162dbc501a2af65c8c71e0866541da#md5:d3162dbc501a2af65c8c71e0866541da",
-          "archive:https://github.com/janestreet/result/archive/1.4.tar.gz#md5:d3162dbc501a2af65c8c71e0866541da"
-        ],
-        "opam": {
-          "name": "result",
-          "version": "1.4",
-          "path": "fmt.esy.lock/opam/result.1.4"
-        }
-      },
-      "overrides": [],
-      "dependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@opam/dune@opam:1.11.3@9894df55",
-        "@esy-ocaml/substs@0.0.1@d41d8cd9"
-      ],
-      "devDependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@opam/dune@opam:1.11.3@9894df55"
-      ]
-    },
-    "@opam/ppx_derivers@opam:1.2.1@ecf0aa45": {
-      "id": "@opam/ppx_derivers@opam:1.2.1@ecf0aa45",
-      "name": "@opam/ppx_derivers",
-      "version": "opam:1.2.1",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://opam.ocaml.org/cache/md5/5d/5dc2bf130c1db3c731fe0fffc5648b41#md5:5dc2bf130c1db3c731fe0fffc5648b41",
-          "archive:https://github.com/ocaml-ppx/ppx_derivers/archive/1.2.1.tar.gz#md5:5dc2bf130c1db3c731fe0fffc5648b41"
-        ],
-        "opam": {
-          "name": "ppx_derivers",
-          "version": "1.2.1",
-          "path": "fmt.esy.lock/opam/ppx_derivers.1.2.1"
-        }
-      },
-      "overrides": [],
-      "dependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@opam/dune@opam:1.11.3@9894df55",
-        "@esy-ocaml/substs@0.0.1@d41d8cd9"
-      ],
-      "devDependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@opam/dune@opam:1.11.3@9894df55"
-      ]
-    },
-    "@opam/ocamlfind@opam:1.8.1@ff07b0f9": {
-      "id": "@opam/ocamlfind@opam:1.8.1@ff07b0f9",
-      "name": "@opam/ocamlfind",
-      "version": "opam:1.8.1",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://opam.ocaml.org/cache/md5/18/18ca650982c15536616dea0e422cbd8c#md5:18ca650982c15536616dea0e422cbd8c",
-          "archive:http://download2.camlcity.org/download/findlib-1.8.1.tar.gz#md5:18ca650982c15536616dea0e422cbd8c",
-          "archive:http://download.camlcity.org/download/findlib-1.8.1.tar.gz#md5:18ca650982c15536616dea0e422cbd8c"
-        ],
-        "opam": {
-          "name": "ocamlfind",
-          "version": "1.8.1",
-          "path": "fmt.esy.lock/opam/ocamlfind.1.8.1"
-        }
-      },
-      "overrides": [
-        {
-          "opamoverride":
-            "fmt.esy.lock/overrides/opam__s__ocamlfind_opam__c__1.8.1_opam_override"
-        }
-      ],
-      "dependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@opam/conf-m4@opam:1@3b2b148a",
-        "@esy-ocaml/substs@0.0.1@d41d8cd9"
-      ],
-      "devDependencies": [ "ocaml@4.6.1000@d41d8cd9" ]
-    },
-    "@opam/ocamlbuild@opam:0.14.0@6ac75d03": {
-      "id": "@opam/ocamlbuild@opam:0.14.0@6ac75d03",
-      "name": "@opam/ocamlbuild",
-      "version": "opam:0.14.0",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://opam.ocaml.org/cache/sha256/87/87b29ce96958096c0a1a8eeafeb6268077b2d11e1bf2b3de0f5ebc9cf8d42e78#sha256:87b29ce96958096c0a1a8eeafeb6268077b2d11e1bf2b3de0f5ebc9cf8d42e78",
-          "archive:https://github.com/ocaml/ocamlbuild/archive/0.14.0.tar.gz#sha256:87b29ce96958096c0a1a8eeafeb6268077b2d11e1bf2b3de0f5ebc9cf8d42e78"
-        ],
-        "opam": {
-          "name": "ocamlbuild",
-          "version": "0.14.0",
-          "path": "fmt.esy.lock/opam/ocamlbuild.0.14.0"
-        }
-      },
-      "overrides": [
-        {
-          "opamoverride":
-            "fmt.esy.lock/overrides/opam__s__ocamlbuild_opam__c__0.14.0_opam_override"
-        }
-      ],
-      "dependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@esy-ocaml/substs@0.0.1@d41d8cd9"
-      ],
-      "devDependencies": [ "ocaml@4.6.1000@d41d8cd9" ]
-    },
-    "@opam/ocaml-migrate-parsetree@opam:1.4.0@0c4ec62d": {
-      "id": "@opam/ocaml-migrate-parsetree@opam:1.4.0@0c4ec62d",
-      "name": "@opam/ocaml-migrate-parsetree",
-      "version": "opam:1.4.0",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://opam.ocaml.org/cache/sha256/23/231fbdc205187b3ee266b535d9cfe44b599067b2f6e97883c782ea7bb577d3b8#sha256:231fbdc205187b3ee266b535d9cfe44b599067b2f6e97883c782ea7bb577d3b8",
-          "archive:https://github.com/ocaml-ppx/ocaml-migrate-parsetree/releases/download/v1.4.0/ocaml-migrate-parsetree-v1.4.0.tbz#sha256:231fbdc205187b3ee266b535d9cfe44b599067b2f6e97883c782ea7bb577d3b8"
-        ],
-        "opam": {
-          "name": "ocaml-migrate-parsetree",
-          "version": "1.4.0",
-          "path": "fmt.esy.lock/opam/ocaml-migrate-parsetree.1.4.0"
-        }
-      },
-      "overrides": [],
-      "dependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@opam/result@opam:1.4@dc720aef",
-        "@opam/ppx_derivers@opam:1.2.1@ecf0aa45",
-        "@opam/dune@opam:1.11.3@9894df55", "@esy-ocaml/substs@0.0.1@d41d8cd9"
-      ],
-      "devDependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@opam/result@opam:1.4@dc720aef",
-        "@opam/ppx_derivers@opam:1.2.1@ecf0aa45",
-        "@opam/dune@opam:1.11.3@9894df55"
-      ]
-    },
-    "@opam/merlin-extend@opam:0.5@a5dd7d4b": {
-      "id": "@opam/merlin-extend@opam:0.5@a5dd7d4b",
-      "name": "@opam/merlin-extend",
-      "version": "opam:0.5",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://opam.ocaml.org/cache/sha256/ca/ca3a38c360c7d4827eb4789abf7a6aa4b6e3b4e3c3ef69a5be64dce4601ec227#sha256:ca3a38c360c7d4827eb4789abf7a6aa4b6e3b4e3c3ef69a5be64dce4601ec227",
-          "archive:https://github.com/let-def/merlin-extend/releases/download/v0.5/merlin-extend-v0.5.tbz#sha256:ca3a38c360c7d4827eb4789abf7a6aa4b6e3b4e3c3ef69a5be64dce4601ec227"
-        ],
-        "opam": {
-          "name": "merlin-extend",
-          "version": "0.5",
-          "path": "fmt.esy.lock/opam/merlin-extend.0.5"
-        }
-      },
-      "overrides": [],
-      "dependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@opam/dune@opam:1.11.3@9894df55",
-        "@opam/cppo@opam:1.6.6@f4f83858", "@esy-ocaml/substs@0.0.1@d41d8cd9"
-      ],
-      "devDependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@opam/dune@opam:1.11.3@9894df55"
-      ]
-    },
-    "@opam/menhir@opam:20190924@004407ff": {
-      "id": "@opam/menhir@opam:20190924@004407ff",
-      "name": "@opam/menhir",
-      "version": "opam:20190924",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://opam.ocaml.org/cache/md5/67/677f1997fb73177d5a00fa1b8d61c3ef#md5:677f1997fb73177d5a00fa1b8d61c3ef",
-          "archive:https://gitlab.inria.fr/fpottier/menhir/repository/20190924/archive.tar.gz#md5:677f1997fb73177d5a00fa1b8d61c3ef"
-        ],
-        "opam": {
-          "name": "menhir",
-          "version": "20190924",
-          "path": "fmt.esy.lock/opam/menhir.20190924"
-        }
-      },
-      "overrides": [],
-      "dependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@opam/ocamlfind@opam:1.8.1@ff07b0f9",
-        "@opam/ocamlbuild@opam:0.14.0@6ac75d03",
-        "@esy-ocaml/substs@0.0.1@d41d8cd9"
-      ],
-      "devDependencies": [ "ocaml@4.6.1000@d41d8cd9" ]
-    },
-    "@opam/dune@opam:1.11.3@9894df55": {
-      "id": "@opam/dune@opam:1.11.3@9894df55",
-      "name": "@opam/dune",
-      "version": "opam:1.11.3",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://opam.ocaml.org/cache/sha256/c8/c83a63e7e8245611b0e11d6adea07c6484dc1b4efffacb176315cd6674d4bbd2#sha256:c83a63e7e8245611b0e11d6adea07c6484dc1b4efffacb176315cd6674d4bbd2",
-          "archive:https://github.com/ocaml/dune/releases/download/1.11.3/dune-build-info-1.11.3.tbz#sha256:c83a63e7e8245611b0e11d6adea07c6484dc1b4efffacb176315cd6674d4bbd2"
-        ],
-        "opam": {
-          "name": "dune",
-          "version": "1.11.3",
-          "path": "fmt.esy.lock/opam/dune.1.11.3"
-        }
-      },
-      "overrides": [
-        {
-          "opamoverride":
-            "fmt.esy.lock/overrides/opam__s__dune_opam__c__1.11.3_opam_override"
-        }
-      ],
-      "dependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@opam/base-unix@opam:base@87d0b2eb",
-        "@opam/base-threads@opam:base@36803084",
-        "@esy-ocaml/substs@0.0.1@d41d8cd9"
-      ],
-      "devDependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@opam/base-unix@opam:base@87d0b2eb",
-        "@opam/base-threads@opam:base@36803084"
-      ]
-    },
-    "@opam/cppo@opam:1.6.6@f4f83858": {
-      "id": "@opam/cppo@opam:1.6.6@f4f83858",
-      "name": "@opam/cppo",
-      "version": "opam:1.6.6",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://opam.ocaml.org/cache/sha256/e7/e7272996a7789175b87bb998efd079794a8db6625aae990d73f7b4484a07b8a0#sha256:e7272996a7789175b87bb998efd079794a8db6625aae990d73f7b4484a07b8a0",
-          "archive:https://github.com/ocaml-community/cppo/releases/download/v1.6.6/cppo-v1.6.6.tbz#sha256:e7272996a7789175b87bb998efd079794a8db6625aae990d73f7b4484a07b8a0"
-        ],
-        "opam": {
-          "name": "cppo",
-          "version": "1.6.6",
-          "path": "fmt.esy.lock/opam/cppo.1.6.6"
-        }
-      },
-      "overrides": [],
-      "dependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@opam/dune@opam:1.11.3@9894df55",
-        "@opam/base-unix@opam:base@87d0b2eb",
-        "@esy-ocaml/substs@0.0.1@d41d8cd9"
-      ],
-      "devDependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@opam/dune@opam:1.11.3@9894df55",
-        "@opam/base-unix@opam:base@87d0b2eb"
-      ]
-    },
-    "@opam/conf-m4@opam:1@3b2b148a": {
-      "id": "@opam/conf-m4@opam:1@3b2b148a",
-      "name": "@opam/conf-m4",
-      "version": "opam:1",
-      "source": {
-        "type": "install",
-        "source": [ "no-source:" ],
-        "opam": {
-          "name": "conf-m4",
-          "version": "1",
-          "path": "fmt.esy.lock/opam/conf-m4.1"
-        }
-      },
-      "overrides": [],
-      "dependencies": [ "@esy-ocaml/substs@0.0.1@d41d8cd9" ],
-      "devDependencies": []
-    },
-    "@opam/base-unix@opam:base@87d0b2eb": {
-      "id": "@opam/base-unix@opam:base@87d0b2eb",
-      "name": "@opam/base-unix",
-      "version": "opam:base",
-      "source": {
-        "type": "install",
-        "source": [ "no-source:" ],
-        "opam": {
-          "name": "base-unix",
-          "version": "base",
-          "path": "fmt.esy.lock/opam/base-unix.base"
-        }
-      },
-      "overrides": [],
-      "dependencies": [ "@esy-ocaml/substs@0.0.1@d41d8cd9" ],
-      "devDependencies": []
-    },
-    "@opam/base-threads@opam:base@36803084": {
-      "id": "@opam/base-threads@opam:base@36803084",
-      "name": "@opam/base-threads",
-      "version": "opam:base",
-      "source": {
-        "type": "install",
-        "source": [ "no-source:" ],
-        "opam": {
-          "name": "base-threads",
-          "version": "base",
-          "path": "fmt.esy.lock/opam/base-threads.base"
-        }
-      },
-      "overrides": [],
-      "dependencies": [ "@esy-ocaml/substs@0.0.1@d41d8cd9" ],
-      "devDependencies": []
-    },
-    "@esy-ocaml/substs@0.0.1@d41d8cd9": {
-      "id": "@esy-ocaml/substs@0.0.1@d41d8cd9",
-      "name": "@esy-ocaml/substs",
-      "version": "0.0.1",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/@esy-ocaml/substs/-/substs-0.0.1.tgz#sha1:59ebdbbaedcda123fc7ed8fb2b302b7d819e9a46"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [],
-      "devDependencies": []
-    },
-    "@esy-ocaml/reason@3.5.2@d41d8cd9": {
-      "id": "@esy-ocaml/reason@3.5.2@d41d8cd9",
-      "name": "@esy-ocaml/reason",
-      "version": "3.5.2",
-      "source": {
-        "type": "install",
-        "source": [
-          "archive:https://registry.npmjs.org/@esy-ocaml/reason/-/reason-3.5.2.tgz#sha1:ac48b63fd66fbbc1d77ab6a2b7e3a1ba21a8f40b"
-        ]
-      },
-      "overrides": [],
-      "dependencies": [
-        "ocaml@4.6.1000@d41d8cd9", "@opam/result@opam:1.4@dc720aef",
-        "@opam/ocamlfind@opam:1.8.1@ff07b0f9",
-        "@opam/ocaml-migrate-parsetree@opam:1.4.0@0c4ec62d",
-        "@opam/merlin-extend@opam:0.5@a5dd7d4b",
-        "@opam/menhir@opam:20190924@004407ff",
-        "@opam/dune@opam:1.11.3@9894df55"
-      ],
-      "devDependencies": []
-    }
-  }
-}
\ No newline at end of file
diff --git a/fmt.esy.lock/opam/base-threads.base/opam b/fmt.esy.lock/opam/base-threads.base/opam
deleted file mode 100644
index 914ff50..0000000
--- a/fmt.esy.lock/opam/base-threads.base/opam
+++ /dev/null
@@ -1,6 +0,0 @@
-opam-version: "2.0"
-maintainer: "https://github.com/ocaml/opam-repository/issues"
-description: """
-Threads library distributed with the OCaml compiler
-"""
-
diff --git a/fmt.esy.lock/opam/base-unix.base/opam b/fmt.esy.lock/opam/base-unix.base/opam
deleted file mode 100644
index b973540..0000000
--- a/fmt.esy.lock/opam/base-unix.base/opam
+++ /dev/null
@@ -1,6 +0,0 @@
-opam-version: "2.0"
-maintainer: "https://github.com/ocaml/opam-repository/issues"
-description: """
-Unix library distributed with the OCaml compiler
-"""
-
diff --git a/fmt.esy.lock/opam/conf-m4.1/opam b/fmt.esy.lock/opam/conf-m4.1/opam
deleted file mode 100644
index c6feb2a..0000000
--- a/fmt.esy.lock/opam/conf-m4.1/opam
+++ /dev/null
@@ -1,22 +0,0 @@
-opam-version: "2.0"
-maintainer: "tim@gfxmonk.net"
-homepage: "http://www.gnu.org/software/m4/m4.html"
-bug-reports: "https://github.com/ocaml/opam-repository/issues"
-authors: "GNU Project"
-license: "GPL-3.0-only"
-build: [["sh" "-exc" "echo | m4"]]
-depexts: [
-  ["m4"] {os-family = "debian"}
-  ["m4"] {os-distribution = "fedora"}
-  ["m4"] {os-distribution = "rhel"}
-  ["m4"] {os-distribution = "centos"}
-  ["m4"] {os-distribution = "alpine"}
-  ["m4"] {os-distribution = "nixos"}
-  ["m4"] {os-family = "suse"}
-  ["m4"] {os-distribution = "ol"}
-  ["m4"] {os-distribution = "arch"}
-]
-synopsis: "Virtual package relying on m4"
-description:
-  "This package can only install if the m4 binary is installed on the system."
-flags: conf
diff --git a/fmt.esy.lock/opam/cppo.1.6.6/opam b/fmt.esy.lock/opam/cppo.1.6.6/opam
deleted file mode 100644
index f683f8b..0000000
--- a/fmt.esy.lock/opam/cppo.1.6.6/opam
+++ /dev/null
@@ -1,37 +0,0 @@
-opam-version: "2.0"
-maintainer: "martin@mjambon.com"
-authors: "Martin Jambon"
-license: "BSD-3-Clause"
-homepage: "http://mjambon.com/cppo.html"
-doc: "https://ocaml-community.github.io/cppo/"
-bug-reports: "https://github.com/ocaml-community/cppo/issues"
-depends: [
-  "ocaml" {>= "4.03"}
-  "dune" {>= "1.0"}
-  "base-unix"
-]
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  ["dune" "runtest" "-p" name "-j" jobs] {with-test}
-]
-dev-repo: "git+https://github.com/ocaml-community/cppo.git"
-synopsis: "Code preprocessor like cpp for OCaml"
-description: """
-Cppo is an equivalent of the C preprocessor for OCaml programs.
-It allows the definition of simple macros and file inclusion.
-
-Cppo is:
-
-* more OCaml-friendly than cpp
-* easy to learn without consulting a manual
-* reasonably fast
-* simple to install and to maintain
-"""
-url {
-  src: "https://github.com/ocaml-community/cppo/releases/download/v1.6.6/cppo-v1.6.6.tbz"
-  checksum: [
-    "sha256=e7272996a7789175b87bb998efd079794a8db6625aae990d73f7b4484a07b8a0"
-    "sha512=44ecf9d225d9e45490a2feac0bde04865ca398dba6c3579e3370fcd1ea255707b8883590852af8b2df87123801062b9f3acce2455c092deabf431f9c4fb8d8eb"
-  ]
-}
diff --git a/fmt.esy.lock/opam/dune.1.11.3/opam b/fmt.esy.lock/opam/dune.1.11.3/opam
deleted file mode 100644
index af3286b..0000000
--- a/fmt.esy.lock/opam/dune.1.11.3/opam
+++ /dev/null
@@ -1,53 +0,0 @@
-opam-version: "2.0"
-synopsis: "Fast, portable and opinionated build system"
-description: """
-
-dune is a build system that was designed to simplify the release of
-Jane Street packages. It reads metadata from "dune" files following a
-very simple s-expression syntax.
-
-dune is fast, it has very low-overhead and support parallel builds on
-all platforms. It has no system dependencies, all you need to build
-dune and packages using dune is OCaml. You don't need or make or bash
-as long as the packages themselves don't use bash explicitly.
-
-dune supports multi-package development by simply dropping multiple
-repositories into the same directory.
-
-It also supports multi-context builds, such as building against
-several opam roots/switches simultaneously. This helps maintaining
-packages across several versions of OCaml and gives cross-compilation
-for free.
-"""
-maintainer: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-license: "MIT"
-homepage: "https://github.com/ocaml/dune"
-doc: "https://dune.readthedocs.io/"
-bug-reports: "https://github.com/ocaml/dune/issues"
-depends: [
-  "ocaml" {>= "4.02"}
-  "base-unix"
-  "base-threads"
-]
-conflicts: [
-  "jbuilder" {!= "transition"}
-  "odoc" {< "1.3.0"}
-  "dune-release" {< "1.3.0"}
-]
-dev-repo: "git+https://github.com/ocaml/dune.git"
-build: [
-  # opam 2 sets OPAM_SWITCH_PREFIX, so we don't need a hardcoded path
-  ["ocaml" "configure.ml" "--libdir" lib] {opam-version < "2"}
-  ["ocaml" "bootstrap.ml"]
-  ["./boot.exe" "--release" "--subst"] {pinned}
-  ["./boot.exe" "--release" "-j" jobs]
-]
-url {
-  src:
-    "https://github.com/ocaml/dune/releases/download/1.11.3/dune-build-info-1.11.3.tbz"
-  checksum: [
-    "sha256=c83a63e7e8245611b0e11d6adea07c6484dc1b4efffacb176315cd6674d4bbd2"
-    "sha512=2c1532b91d223e6ea0628c5f5174792c1bb4113a464f6d8b878b3c58be1136beb84ba2d9883a330fa20e550367588aa923ba06ffb9b615a098a21374a9377e81"
-  ]
-}
diff --git a/fmt.esy.lock/opam/menhir.20190924/opam b/fmt.esy.lock/opam/menhir.20190924/opam
deleted file mode 100644
index 348967a..0000000
--- a/fmt.esy.lock/opam/menhir.20190924/opam
+++ /dev/null
@@ -1,29 +0,0 @@
-opam-version: "2.0"
-maintainer: "francois.pottier@inria.fr"
-authors: [
-  "François Pottier <francois.pottier@inria.fr>"
-  "Yann Régis-Gianas <yrg@pps.univ-paris-diderot.fr>"
-]
-homepage: "http://gitlab.inria.fr/fpottier/menhir"
-dev-repo: "git+https://gitlab.inria.fr/fpottier/menhir.git"
-bug-reports: "menhir@inria.fr"
-build: [
-  [make "-f" "Makefile" "PREFIX=%{prefix}%" "USE_OCAMLFIND=true" "docdir=%{doc}%/menhir" "libdir=%{lib}%/menhir" "mandir=%{man}%/man1"]
-]
-install: [
-  [make "-f" "Makefile" "install" "PREFIX=%{prefix}%" "docdir=%{doc}%/menhir" "libdir=%{lib}%/menhir" "mandir=%{man}%/man1"]
-]
-depends: [
-  "ocaml" {>= "4.02"}
-  "ocamlfind" {build}
-  "ocamlbuild" {build}
-]
-synopsis: "An LR(1) parser generator"
-url {
-  src:
-    "https://gitlab.inria.fr/fpottier/menhir/repository/20190924/archive.tar.gz"
-  checksum: [
-    "md5=677f1997fb73177d5a00fa1b8d61c3ef"
-    "sha512=ea8a9a6d773529cf6ac05e4c6c4532770fbb8e574c9b646efcefe90d9f24544741e3e8cfd94c8afea0447e34059a8c79c2829b46764ce3a3d6dcb3e7f75980fc"
-  ]
-}
diff --git a/fmt.esy.lock/opam/merlin-extend.0.5/opam b/fmt.esy.lock/opam/merlin-extend.0.5/opam
deleted file mode 100644
index a3ae0d3..0000000
--- a/fmt.esy.lock/opam/merlin-extend.0.5/opam
+++ /dev/null
@@ -1,29 +0,0 @@
-opam-version: "2.0"
-maintainer: "Frederic Bour <frederic.bour@lakaban.net>"
-authors: "Frederic Bour <frederic.bour@lakaban.net>"
-homepage: "https://github.com/let-def/merlin-extend"
-bug-reports: "https://github.com/let-def/merlin-extend"
-license: "MIT"
-dev-repo: "git+https://github.com/let-def/merlin-extend.git"
-build: [
-  ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "dune" {>= "1.0"}
-  "cppo" {build}
-  "ocaml" {>= "4.02.3"}
-]
-synopsis: "A protocol to provide custom frontend to Merlin"
-description: """
-This protocol allows to replace the OCaml frontend of Merlin.
-It extends what used to be done with the `-pp' flag to handle a few more cases."""
-doc: "https://let-def.github.io/merlin-extend"
-url {
-  src:
-    "https://github.com/let-def/merlin-extend/releases/download/v0.5/merlin-extend-v0.5.tbz"
-  checksum: [
-    "sha256=ca3a38c360c7d4827eb4789abf7a6aa4b6e3b4e3c3ef69a5be64dce4601ec227"
-    "sha512=55c5a3637337abb8ca8db679128a81ca8ccce567bc214d55b2e6444dc0e905b74c64d629bdea2457d0fe4be5306414feefcdbc4d4761fdafd59aa107550936b6"
-  ]
-}
diff --git a/fmt.esy.lock/opam/ocaml-migrate-parsetree.1.4.0/opam b/fmt.esy.lock/opam/ocaml-migrate-parsetree.1.4.0/opam
deleted file mode 100644
index 66d40ba..0000000
--- a/fmt.esy.lock/opam/ocaml-migrate-parsetree.1.4.0/opam
+++ /dev/null
@@ -1,37 +0,0 @@
-opam-version: "2.0"
-maintainer: "frederic.bour@lakaban.net"
-authors: [
-  "Frédéric Bour <frederic.bour@lakaban.net>"
-  "Jérémie Dimino <jeremie@dimino.org>"
-]
-license: "LGPL-2.1-only with OCaml-LGPL-linking-exception"
-homepage: "https://github.com/ocaml-ppx/ocaml-migrate-parsetree"
-bug-reports: "https://github.com/ocaml-ppx/ocaml-migrate-parsetree/issues"
-dev-repo: "git+https://github.com/ocaml-ppx/ocaml-migrate-parsetree.git"
-doc: "https://ocaml-ppx.github.io/ocaml-migrate-parsetree/"
-tags: [ "syntax" "org:ocamllabs" ]
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "result"
-  "ppx_derivers"
-  "dune" {>= "1.9.0"}
-  "ocaml" {>= "4.02.3"}
-]
-synopsis: "Convert OCaml parsetrees between different versions"
-description: """
-Convert OCaml parsetrees between different versions
-
-This library converts parsetrees, outcometree and ast mappers between
-different OCaml versions.  High-level functions help making PPX
-rewriters independent of a compiler version.
-"""
-url {
-  src:
-    "https://github.com/ocaml-ppx/ocaml-migrate-parsetree/releases/download/v1.4.0/ocaml-migrate-parsetree-v1.4.0.tbz"
-  checksum: [
-    "sha256=231fbdc205187b3ee266b535d9cfe44b599067b2f6e97883c782ea7bb577d3b8"
-    "sha512=61ee91d2d146cc2d2ff2d5dc4ef5dea4dc4d3c8dbd8b4c9586d64b6ad7302327ab35547aa0a5b0103c3f07b66b13d416a1bee6d4d117293cd3cabe44113ec6d4"
-  ]
-}
diff --git a/fmt.esy.lock/opam/ocamlbuild.0.14.0/opam b/fmt.esy.lock/opam/ocamlbuild.0.14.0/opam
deleted file mode 100644
index 8deabee..0000000
--- a/fmt.esy.lock/opam/ocamlbuild.0.14.0/opam
+++ /dev/null
@@ -1,36 +0,0 @@
-opam-version: "2.0"
-maintainer: "Gabriel Scherer <gabriel.scherer@gmail.com>"
-authors: ["Nicolas Pouillard" "Berke Durak"]
-homepage: "https://github.com/ocaml/ocamlbuild/"
-bug-reports: "https://github.com/ocaml/ocamlbuild/issues"
-license: "LGPL-2.1-only with OCaml-LGPL-linking-exception"
-doc: "https://github.com/ocaml/ocamlbuild/blob/master/manual/manual.adoc"
-dev-repo: "git+https://github.com/ocaml/ocamlbuild.git"
-build: [
-  [
-    make
-    "-f"
-    "configure.make"
-    "all"
-    "OCAMLBUILD_PREFIX=%{prefix}%"
-    "OCAMLBUILD_BINDIR=%{bin}%"
-    "OCAMLBUILD_LIBDIR=%{lib}%"
-    "OCAMLBUILD_MANDIR=%{man}%"
-    "OCAML_NATIVE=%{ocaml:native}%"
-    "OCAML_NATIVE_TOOLS=%{ocaml:native}%"
-  ]
-  [make "check-if-preinstalled" "all" "opam-install"]
-]
-conflicts: [
-  "base-ocamlbuild"
-  "ocamlfind" {< "1.6.2"}
-]
-synopsis:
-  "OCamlbuild is a build system with builtin rules to easily build most OCaml projects."
-depends: [
-  "ocaml" {>= "4.03"}
-]
-url {
-  src: "https://github.com/ocaml/ocamlbuild/archive/0.14.0.tar.gz"
-  checksum: "sha256=87b29ce96958096c0a1a8eeafeb6268077b2d11e1bf2b3de0f5ebc9cf8d42e78"
-}
diff --git a/fmt.esy.lock/opam/ocamlfind.1.8.1/files/ocaml-stub b/fmt.esy.lock/opam/ocamlfind.1.8.1/files/ocaml-stub
deleted file mode 100644
index e5ad990..0000000
--- a/fmt.esy.lock/opam/ocamlfind.1.8.1/files/ocaml-stub
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/sh
-
-BINDIR=$(dirname "$(command -v ocamlc)")
-"$BINDIR/ocaml" -I "$OCAML_TOPLEVEL_PATH" "$@"
diff --git a/fmt.esy.lock/opam/ocamlfind.1.8.1/files/ocamlfind.install b/fmt.esy.lock/opam/ocamlfind.1.8.1/files/ocamlfind.install
deleted file mode 100644
index 295c625..0000000
--- a/fmt.esy.lock/opam/ocamlfind.1.8.1/files/ocamlfind.install
+++ /dev/null
@@ -1,6 +0,0 @@
-bin: [
-  "src/findlib/ocamlfind" {"ocamlfind"}
-  "?src/findlib/ocamlfind_opt" {"ocamlfind"}
-  "?tools/safe_camlp4"
-]
-toplevel: ["src/findlib/topfind"]
diff --git a/fmt.esy.lock/opam/ocamlfind.1.8.1/opam b/fmt.esy.lock/opam/ocamlfind.1.8.1/opam
deleted file mode 100644
index d757d66..0000000
--- a/fmt.esy.lock/opam/ocamlfind.1.8.1/opam
+++ /dev/null
@@ -1,50 +0,0 @@
-opam-version: "2.0"
-synopsis: "A library manager for OCaml"
-maintainer: "Thomas Gazagnaire <thomas@gazagnaire.org>"
-authors: "Gerd Stolpmann <gerd@gerd-stolpmann.de>"
-homepage: "http://projects.camlcity.org/projects/findlib.html"
-bug-reports: "https://gitlab.camlcity.org/gerd/lib-findlib/issues"
-dev-repo: "git+https://gitlab.camlcity.org/gerd/lib-findlib.git"
-description: """
-Findlib is a library manager for OCaml. It provides a convention how
-to store libraries, and a file format ("META") to describe the
-properties of libraries. There is also a tool (ocamlfind) for
-interpreting the META files, so that it is very easy to use libraries
-in programs and scripts.
-"""
-build: [
-  [
-    "./configure"
-    "-bindir"
-    bin
-    "-sitelib"
-    lib
-    "-mandir"
-    man
-    "-config"
-    "%{lib}%/findlib.conf"
-    "-no-custom"
-    "-no-camlp4" {!ocaml:preinstalled & ocaml:version >= "4.02.0"}
-    "-no-topfind" {ocaml:preinstalled}
-  ]
-  [make "all"]
-  [make "opt"] {ocaml:native}
-]
-install: [
-  [make "install"]
-  ["install" "-m" "0755" "ocaml-stub" "%{bin}%/ocaml"] {ocaml:preinstalled}
-]
-depends: [
-  "ocaml" {>= "4.00.0"}
-  "conf-m4" {build}
-]
-extra-files: [
-  ["ocamlfind.install" "md5=06f2c282ab52d93aa6adeeadd82a2543"]
-  ["ocaml-stub" "md5=181f259c9e0bad9ef523e7d4abfdf87a"]
-]
-url {
-  src: "http://download.camlcity.org/download/findlib-1.8.1.tar.gz"
-  checksum: "md5=18ca650982c15536616dea0e422cbd8c"
-  mirrors: "http://download2.camlcity.org/download/findlib-1.8.1.tar.gz"
-}
-depopts: ["graphics"]
diff --git a/fmt.esy.lock/opam/ppx_derivers.1.2.1/opam b/fmt.esy.lock/opam/ppx_derivers.1.2.1/opam
deleted file mode 100644
index 3d10814..0000000
--- a/fmt.esy.lock/opam/ppx_derivers.1.2.1/opam
+++ /dev/null
@@ -1,23 +0,0 @@
-opam-version: "2.0"
-maintainer: "jeremie@dimino.org"
-authors: ["Jérémie Dimino"]
-license: "BSD-3-Clause"
-homepage: "https://github.com/ocaml-ppx/ppx_derivers"
-bug-reports: "https://github.com/ocaml-ppx/ppx_derivers/issues"
-dev-repo: "git://github.com/ocaml-ppx/ppx_derivers.git"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml"
-  "dune"
-]
-synopsis: "Shared [@@deriving] plugin registry"
-description: """
-Ppx_derivers is a tiny package whose sole purpose is to allow
-ppx_deriving and ppx_type_conv to inter-operate gracefully when linked
-as part of the same ocaml-migrate-parsetree driver."""
-url {
-  src: "https://github.com/ocaml-ppx/ppx_derivers/archive/1.2.1.tar.gz"
-  checksum: "md5=5dc2bf130c1db3c731fe0fffc5648b41"
-}
diff --git a/fmt.esy.lock/opam/result.1.4/opam b/fmt.esy.lock/opam/result.1.4/opam
deleted file mode 100644
index b44aeea..0000000
--- a/fmt.esy.lock/opam/result.1.4/opam
+++ /dev/null
@@ -1,22 +0,0 @@
-opam-version: "2.0"
-maintainer: "opensource@janestreet.com"
-authors: ["Jane Street Group, LLC <opensource@janestreet.com>"]
-homepage: "https://github.com/janestreet/result"
-dev-repo: "git+https://github.com/janestreet/result.git"
-bug-reports: "https://github.com/janestreet/result/issues"
-license: "BSD-3-Clause"
-build: [["dune" "build" "-p" name "-j" jobs]]
-depends: [
-  "ocaml"
-  "dune" {>= "1.0"}
-]
-synopsis: "Compatibility Result module"
-description: """
-Projects that want to use the new result type defined in OCaml >= 4.03
-while staying compatible with older version of OCaml should use the
-Result module defined in this library."""
-url {
-  src:
-    "https://github.com/janestreet/result/archive/1.4.tar.gz"
-  checksum: "md5=d3162dbc501a2af65c8c71e0866541da"
-}
diff --git a/fmt.esy.lock/overrides/opam__s__dune_opam__c__1.11.3_opam_override/package.json b/fmt.esy.lock/overrides/opam__s__dune_opam__c__1.11.3_opam_override/package.json
deleted file mode 100644
index 064c7e3..0000000
--- a/fmt.esy.lock/overrides/opam__s__dune_opam__c__1.11.3_opam_override/package.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "build": [
-    [
-      "ocaml",
-      "bootstrap.ml"
-    ],
-    [
-      "./boot.exe",
-      "--release",
-      "-j",
-      "4"
-    ]
-  ]
-}
diff --git a/fmt.esy.lock/overrides/opam__s__ocamlbuild_opam__c__0.14.0_opam_override/files/ocamlbuild-0.14.0.patch b/fmt.esy.lock/overrides/opam__s__ocamlbuild_opam__c__0.14.0_opam_override/files/ocamlbuild-0.14.0.patch
deleted file mode 100644
index 4d5bea0..0000000
--- a/fmt.esy.lock/overrides/opam__s__ocamlbuild_opam__c__0.14.0_opam_override/files/ocamlbuild-0.14.0.patch
+++ /dev/null
@@ -1,463 +0,0 @@
---- ./Makefile
-+++ ./Makefile
-@@ -213,7 +213,7 @@
- 	rm -f man/ocamlbuild.1
- 
- man/options_man.byte: src/ocamlbuild_pack.cmo
--	$(OCAMLC) $^ -I src man/options_man.ml -o man/options_man.byte
-+	$(OCAMLC) -I +unix unix.cma $^ -I src man/options_man.ml -o man/options_man.byte
- 
- clean::
- 	rm -f man/options_man.cm*
---- ./src/command.ml
-+++ ./src/command.ml
-@@ -148,9 +148,10 @@
-   let self = string_of_command_spec_with_calls call_with_tags call_with_target resolve_virtuals in
-   let b = Buffer.create 256 in
-   (* The best way to prevent bash from switching to its windows-style
--   * quote-handling is to prepend an empty string before the command name. *)
-+   * quote-handling is to prepend an empty string before the command name.
-+   * space seems to work, too - and the ouput is nicer *)
-   if Sys.os_type = "Win32" then
--    Buffer.add_string b "''";
-+    Buffer.add_char b ' ';
-   let first = ref true in
-   let put_space () =
-     if !first then
-@@ -260,7 +261,7 @@
- 
- let execute_many ?(quiet=false) ?(pretend=false) cmds =
-   add_parallel_stat (List.length cmds);
--  let degraded = !*My_unix.is_degraded || Sys.os_type = "Win32" in
-+  let degraded = !*My_unix.is_degraded in
-   let jobs = !jobs in
-   if jobs < 0 then invalid_arg "jobs < 0";
-   let max_jobs = if jobs = 0 then None else Some jobs in
---- ./src/findlib.ml
-+++ ./src/findlib.ml
-@@ -66,9 +66,6 @@
-     (fun command -> lexer & Lexing.from_string & run_and_read command)
-     command
- 
--let run_and_read command =
--  Printf.ksprintf run_and_read command
--
- let rec query name =
-   try
-     Hashtbl.find packages name
-@@ -135,7 +132,8 @@
-   with Not_found -> s
- 
- let list () =
--  List.map before_space (split_nl & run_and_read "%s list" ocamlfind)
-+  let cmd = Shell.quote_filename_if_needed ocamlfind ^ " list" in
-+  List.map before_space (split_nl & run_and_read cmd)
- 
- (* The closure algorithm is easy because the dependencies are already closed
- and sorted for each package. We only have to make the union. We could also
---- ./src/main.ml
-+++ ./src/main.ml
-@@ -162,6 +162,9 @@
-               Tags.mem "traverse" tags
-               || List.exists (Pathname.is_prefix path_name) !Options.include_dirs
-               || List.exists (Pathname.is_prefix path_name) target_dirs)
-+            && ((* beware: !Options.build_dir is an absolute directory *)
-+              Pathname.normalize !Options.build_dir
-+              <> Pathname.normalize (Pathname.pwd/path_name))
-           end
-         end
-       end
---- ./src/my_std.ml
-+++ ./src/my_std.ml
-@@ -271,13 +271,107 @@
-       try Array.iter (fun x -> if x = basename then raise Exit) a; false
-       with Exit -> true
- 
-+let command_plain = function
-+| [| |] -> 0
-+| margv ->
-+  let rec waitpid a b =
-+    match Unix.waitpid a b with
-+    | exception (Unix.Unix_error(Unix.EINTR,_,_)) -> waitpid a b
-+    | x -> x
-+  in
-+  let pid = Unix.(create_process margv.(0) margv stdin stdout stderr) in
-+  let pid', process_status = waitpid [] pid in
-+  assert (pid = pid');
-+  match process_status with
-+  | Unix.WEXITED n -> n
-+  | Unix.WSIGNALED _ -> 2 (* like OCaml's uncaught exceptions *)
-+  | Unix.WSTOPPED _ -> 127
-+
-+(* can't use Lexers because of circular dependency *)
-+let split_path_win str =
-+  let rec aux pos =
-+    try
-+      let i = String.index_from str pos ';' in
-+      let len = i - pos in
-+      if len = 0 then
-+        aux (succ i)
-+      else
-+        String.sub str pos (i - pos) :: aux (succ i)
-+    with Not_found | Invalid_argument _ ->
-+      let len = String.length str - pos in
-+      if len = 0 then [] else [String.sub str pos len]
-+  in
-+  aux 0
-+
-+let windows_shell = lazy begin
-+  let rec iter = function
-+  | [] -> [| "bash.exe" ; "--norc" ; "--noprofile" |]
-+  | hd::tl ->
-+    let dash = Filename.concat hd "dash.exe" in
-+    if Sys.file_exists dash then [|dash|] else
-+    let bash = Filename.concat hd "bash.exe" in
-+    if Sys.file_exists bash = false then iter tl else
-+    (* if sh.exe and bash.exe exist in the same dir, choose sh.exe *)
-+    let sh = Filename.concat hd "sh.exe" in
-+    if Sys.file_exists sh then [|sh|] else [|bash ; "--norc" ; "--noprofile"|]
-+  in
-+  split_path_win (try Sys.getenv "PATH" with Not_found -> "") |> iter
-+end
-+
-+let prep_windows_cmd cmd =
-+  (* workaround known ocaml bug, remove later *)
-+  if String.contains cmd '\t' && String.contains cmd ' ' = false then
-+    " " ^ cmd
-+  else
-+    cmd
-+
-+let run_with_shell = function
-+| "" -> 0
-+| cmd ->
-+  let cmd = prep_windows_cmd cmd in
-+  let shell = Lazy.force windows_shell in
-+  let qlen = Filename.quote cmd |> String.length in
-+  (* old versions of dash had problems with bs *)
-+  try
-+    if qlen < 7_900 then
-+      command_plain (Array.append shell [| "-ec" ; cmd |])
-+    else begin
-+      (* it can still work, if the called command is a cygwin tool *)
-+      let ch_closed = ref false in
-+      let file_deleted = ref false in
-+      let fln,ch =
-+        Filename.open_temp_file
-+          ~mode:[Open_binary]
-+          "ocamlbuildtmp"
-+          ".sh"
-+      in
-+      try
-+        let f_slash = String.map ( fun x -> if x = '\\' then '/' else x ) fln in
-+        output_string ch cmd;
-+        ch_closed:= true;
-+        close_out ch;
-+        let ret = command_plain (Array.append shell [| "-e" ; f_slash |]) in
-+        file_deleted:= true;
-+        Sys.remove fln;
-+        ret
-+      with
-+      | x ->
-+        if !ch_closed = false then
-+          close_out_noerr ch;
-+        if !file_deleted = false then
-+          (try Sys.remove fln with _ -> ());
-+        raise x
-+    end
-+  with
-+  | (Unix.Unix_error _) as x ->
-+    (* Sys.command doesn't raise an exception, so run_with_shell also won't
-+       raise *)
-+    Printexc.to_string x ^ ":" ^ cmd |> prerr_endline;
-+    1
-+
- let sys_command =
--  match Sys.os_type with
--  | "Win32" -> fun cmd ->
--      if cmd = "" then 0 else
--      let cmd = "bash --norc -c " ^ Filename.quote cmd in
--      Sys.command cmd
--  | _ -> fun cmd -> if cmd = "" then 0 else Sys.command cmd
-+  if Sys.win32 then run_with_shell
-+  else fun cmd -> if cmd = "" then 0 else Sys.command cmd
- 
- (* FIXME warning fix and use Filename.concat *)
- let filename_concat x y =
---- ./src/my_std.mli
-+++ ./src/my_std.mli
-@@ -69,3 +69,6 @@
- 
- val split_ocaml_version : (int * int * int * string) option
- (** (major, minor, patchlevel, rest) *)
-+
-+val windows_shell : string array Lazy.t
-+val prep_windows_cmd : string -> string
---- ./src/ocamlbuild_executor.ml
-+++ ./src/ocamlbuild_executor.ml
-@@ -34,6 +34,8 @@
-   job_stdin   : out_channel;
-   job_stderr  : in_channel;
-   job_buffer  : Buffer.t;
-+  job_pid     : int;
-+  job_tmp_file: string option;
-   mutable job_dying : bool;
- };;
- 
-@@ -76,6 +78,61 @@
-   in
-   loop 0
- ;;
-+
-+let open_process_full_win cmd env =
-+  let (in_read, in_write) = Unix.pipe () in
-+  let (out_read, out_write) = Unix.pipe () in
-+  let (err_read, err_write) = Unix.pipe () in
-+  Unix.set_close_on_exec in_read;
-+  Unix.set_close_on_exec out_write;
-+  Unix.set_close_on_exec err_read;
-+  let inchan = Unix.in_channel_of_descr in_read in
-+  let outchan = Unix.out_channel_of_descr out_write in
-+  let errchan = Unix.in_channel_of_descr err_read in
-+  let shell = Lazy.force Ocamlbuild_pack.My_std.windows_shell in
-+  let test_cmd =
-+    String.concat " " (List.map Filename.quote (Array.to_list shell)) ^
-+    "-ec " ^
-+    Filename.quote (Ocamlbuild_pack.My_std.prep_windows_cmd cmd) in
-+  let argv,tmp_file =
-+    if String.length test_cmd < 7_900 then
-+      Array.append
-+        shell
-+        [| "-ec" ; Ocamlbuild_pack.My_std.prep_windows_cmd cmd |],None
-+    else
-+    let fln,ch = Filename.open_temp_file ~mode:[Open_binary] "ocamlbuild" ".sh" in
-+    output_string ch (Ocamlbuild_pack.My_std.prep_windows_cmd cmd);
-+    close_out ch;
-+    let fln' = String.map (function '\\' -> '/' | c -> c) fln in
-+    Array.append
-+      shell
-+      [| "-c" ; fln' |], Some fln in
-+  let pid =
-+    Unix.create_process_env argv.(0) argv env out_read in_write err_write in
-+  Unix.close out_read;
-+  Unix.close in_write;
-+  Unix.close err_write;
-+  (pid, inchan, outchan, errchan,tmp_file)
-+
-+let close_process_full_win (pid,inchan, outchan, errchan, tmp_file) =
-+  let delete tmp_file =
-+    match tmp_file with
-+    | None -> ()
-+    | Some x -> try Sys.remove x with Sys_error _ -> () in
-+  let tmp_file_deleted = ref false in
-+  try
-+    close_in inchan;
-+    close_out outchan;
-+    close_in errchan;
-+    let res = snd(Unix.waitpid [] pid) in
-+    tmp_file_deleted := true;
-+    delete tmp_file;
-+    res
-+  with
-+  | x when tmp_file <> None && !tmp_file_deleted = false ->
-+    delete tmp_file;
-+    raise x
-+
- (* ***)
- (*** execute *)
- (* XXX: Add test for non reentrancy *)
-@@ -130,10 +187,16 @@
-   (*** add_job *)
-   let add_job cmd rest result id =
-     (*display begin fun oc -> fp oc "Job %a is %s\n%!" print_job_id id cmd; end;*)
--    let (stdout', stdin', stderr') = open_process_full cmd env in
-+    let (pid,stdout', stdin', stderr', tmp_file) =
-+      if Sys.win32 then open_process_full_win cmd env else
-+      let a,b,c = open_process_full cmd env in
-+      -1,a,b,c,None
-+    in
-     incr jobs_active;
--    set_nonblock (doi stdout');
--    set_nonblock (doi stderr');
-+    if not Sys.win32 then (
-+      set_nonblock (doi stdout');
-+      set_nonblock (doi stderr');
-+    );
-     let job =
-       { job_id          = id;
-         job_command     = cmd;
-@@ -143,7 +206,9 @@
-         job_stdin       = stdin';
-         job_stderr      = stderr';
-         job_buffer      = Buffer.create 1024;
--        job_dying       = false }
-+        job_dying       = false;
-+        job_tmp_file    = tmp_file;
-+        job_pid         = pid }
-     in
-     outputs := FDM.add (doi stdout') job (FDM.add (doi stderr') job !outputs);
-     jobs := JS.add job !jobs;
-@@ -199,6 +264,7 @@
-               try
-                 read fd u 0 (Bytes.length u)
-               with
-+              | Unix.Unix_error(Unix.EPIPE,_,_) when Sys.win32 -> 0
-               | Unix.Unix_error(e,_,_)  ->
-                 let msg = error_message e in
-                 display (fun oc -> fp oc
-@@ -241,14 +307,19 @@
-       decr jobs_active;
- 
-       (* PR#5371: we would get EAGAIN below otherwise *)
--      clear_nonblock (doi job.job_stdout);
--      clear_nonblock (doi job.job_stderr);
--
-+      if not Sys.win32 then (
-+        clear_nonblock (doi job.job_stdout);
-+        clear_nonblock (doi job.job_stderr);
-+      );
-       do_read ~loop:true (doi job.job_stdout) job;
-       do_read ~loop:true (doi job.job_stderr) job;
-       outputs := FDM.remove (doi job.job_stdout) (FDM.remove (doi job.job_stderr) !outputs);
-       jobs := JS.remove job !jobs;
--      let status = close_process_full (job.job_stdout, job.job_stdin, job.job_stderr) in
-+      let status =
-+        if Sys.win32 then
-+          close_process_full_win (job.job_pid, job.job_stdout, job.job_stdin, job.job_stderr, job.job_tmp_file)
-+        else
-+          close_process_full (job.job_stdout, job.job_stdin, job.job_stderr) in
- 
-       let shown = ref false in
- 
---- ./src/ocamlbuild_unix_plugin.ml
-+++ ./src/ocamlbuild_unix_plugin.ml
-@@ -48,12 +48,22 @@
-   end
- 
- let run_and_open s kont =
-+  let s_orig = s in
-+  let s =
-+    (* Be consistent! My_unix.run_and_open uses My_std.sys_command and
-+       sys_command uses bash. *)
-+    if Sys.win32 = false then s else
-+    let l = match Lazy.force My_std.windows_shell |> Array.to_list with
-+    | hd::tl -> (Filename.quote hd)::tl
-+    | _ -> assert false in
-+    "\"" ^ (String.concat " " l) ^ " -ec " ^ Filename.quote (" " ^ s) ^ "\""
-+  in
-   let ic = Unix.open_process_in s in
-   let close () =
-     match Unix.close_process_in ic with
-     | Unix.WEXITED 0 -> ()
-     | Unix.WEXITED _ | Unix.WSIGNALED _ | Unix.WSTOPPED _ ->
--        failwith (Printf.sprintf "Error while running: %s" s) in
-+        failwith (Printf.sprintf "Error while running: %s" s_orig) in
-   let res = try
-       kont ic
-     with e -> (close (); raise e)
---- ./src/options.ml
-+++ ./src/options.ml
-@@ -174,11 +174,24 @@
-     build_dir := Filename.concat (Sys.getcwd ()) s
-   else
-     build_dir := s
-+
-+let slashify =
-+  if Sys.win32 then fun p -> String.map (function '\\' -> '/' | x -> x) p
-+  else fun p ->p
-+
-+let sb () =
-+  match Sys.os_type with
-+  | "Win32" ->
-+    (try set_binary_mode_out stdout true with _ -> ());
-+  | _ -> ()
-+
-+
- let spec = ref (
-     let print_version () =
-+      sb ();
-       Printf.printf "ocamlbuild %s\n%!" Ocamlbuild_config.version; raise Exit_OK
-     in
--    let print_vnum () = print_endline Ocamlbuild_config.version; raise Exit_OK in
-+    let print_vnum () = sb (); print_endline Ocamlbuild_config.version; raise Exit_OK in
-   Arg.align
-   [
-    "-version", Unit print_version , " Display the version";
-@@ -257,8 +270,8 @@
-    "-build-dir", String set_build_dir, "<path> Set build directory (implies no-links)";
-    "-install-lib-dir", Set_string Ocamlbuild_where.libdir, "<path> Set the install library directory";
-    "-install-bin-dir", Set_string Ocamlbuild_where.bindir, "<path> Set the install binary directory";
--   "-where", Unit (fun () -> print_endline !Ocamlbuild_where.libdir; raise Exit_OK), " Display the install library directory";
--   "-which", String (fun cmd -> print_endline (find_tool cmd); raise Exit_OK), "<command> Display path to the tool command";
-+   "-where", Unit (fun () -> sb (); print_endline (slashify !Ocamlbuild_where.libdir); raise Exit_OK), " Display the install library directory";
-+   "-which", String (fun cmd -> sb (); print_endline (slashify (find_tool cmd)); raise Exit_OK), "<command> Display path to the tool command";
-    "-ocamlc", set_cmd ocamlc, "<command> Set the OCaml bytecode compiler";
-    "-plugin-ocamlc", set_cmd plugin_ocamlc, "<command> Set the OCaml bytecode compiler \
-      used when building myocamlbuild.ml (only)";
---- ./src/pathname.ml
-+++ ./src/pathname.ml
-@@ -84,6 +84,26 @@
-   | x :: xs -> x :: normalize_list xs
- 
- let normalize x =
-+  let x =
-+    if Sys.win32 = false then
-+      x
-+    else
-+      let len = String.length x in
-+      let b = Bytes.create len in
-+      for i = 0 to pred len do
-+        match x.[i] with
-+        | '\\' -> Bytes.set b i '/'
-+        | c -> Bytes.set b i c
-+      done;
-+      if len > 1 then (
-+        let c1 = Bytes.get b 0 in
-+        let c2 = Bytes.get b 1 in
-+        if c2 = ':' && c1 >= 'a' && c1 <= 'z' &&
-+           ( len = 2 || Bytes.get b 2 = '/') then
-+          Bytes.set b 0 (Char.uppercase_ascii c1)
-+      );
-+      Bytes.unsafe_to_string b
-+  in
-   if Glob.eval not_normal_form_re x then
-     let root, paths = split x in
-     join root (normalize_list paths)
---- ./src/shell.ml
-+++ ./src/shell.ml
-@@ -24,12 +24,26 @@
-     | 'a'..'z' | 'A'..'Z' | '0'..'9' | '.' | '-' | '/' | '_' | ':' | '@' | '+' | ',' -> loop (pos + 1)
-     | _ -> false in
-   loop 0
-+
-+let generic_quote quotequote s =
-+  let l = String.length s in
-+  let b = Buffer.create (l + 20) in
-+  Buffer.add_char b '\'';
-+  for i = 0 to l - 1 do
-+    if s.[i] = '\''
-+    then Buffer.add_string b quotequote
-+    else Buffer.add_char b  s.[i]
-+  done;
-+  Buffer.add_char b '\'';
-+  Buffer.contents b
-+let unix_quote = generic_quote "'\\''"
-+
- let quote_filename_if_needed s =
-   if is_simple_filename s then s
-   (* We should probably be using [Filename.unix_quote] except that function
-    * isn't exported. Users on Windows will have to live with not being able to
-    * install OCaml into c:\o'caml. Too bad. *)
--  else if Sys.os_type = "Win32" then Printf.sprintf "'%s'" s
-+  else if Sys.os_type = "Win32" then unix_quote s
-   else Filename.quote s
- let chdir dir =
-   reset_filesys_cache ();
-@@ -37,7 +51,7 @@
- let run args target =
-   reset_readdir_cache ();
-   let cmd = String.concat " " (List.map quote_filename_if_needed args) in
--  if !*My_unix.is_degraded || Sys.os_type = "Win32" then
-+  if !*My_unix.is_degraded then
-     begin
-       Log.event cmd target Tags.empty;
-       let st = sys_command cmd in
diff --git a/fmt.esy.lock/overrides/opam__s__ocamlbuild_opam__c__0.14.0_opam_override/package.json b/fmt.esy.lock/overrides/opam__s__ocamlbuild_opam__c__0.14.0_opam_override/package.json
deleted file mode 100644
index b24be7b..0000000
--- a/fmt.esy.lock/overrides/opam__s__ocamlbuild_opam__c__0.14.0_opam_override/package.json
+++ /dev/null
@@ -1,27 +0,0 @@
-{
-  "build": [
-    [
-      "bash",
-      "-c",
-      "#{os == 'windows' ? 'patch -p1 < ocamlbuild-0.14.0.patch' : 'true'}"
-    ],
-    [
-      "make",
-      "-f",
-      "configure.make",
-      "all",
-      "OCAMLBUILD_PREFIX=#{self.install}",
-      "OCAMLBUILD_BINDIR=#{self.bin}",
-      "OCAMLBUILD_LIBDIR=#{self.lib}",
-      "OCAMLBUILD_MANDIR=#{self.man}",
-      "OCAMLBUILD_NATIVE=true",
-      "OCAMLBUILD_NATIVE_TOOLS=true"
-    ],
-    [
-      "make",
-      "check-if-preinstalled",
-      "all",
-      "#{os == 'windows' ? 'install' : 'opam-install'}"
-    ]
-  ]
-}
diff --git a/fmt.esy.lock/overrides/opam__s__ocamlfind_opam__c__1.8.1_opam_override/files/findlib-1.8.1.patch b/fmt.esy.lock/overrides/opam__s__ocamlfind_opam__c__1.8.1_opam_override/files/findlib-1.8.1.patch
deleted file mode 100644
index 3e3ee5a..0000000
--- a/fmt.esy.lock/overrides/opam__s__ocamlfind_opam__c__1.8.1_opam_override/files/findlib-1.8.1.patch
+++ /dev/null
@@ -1,471 +0,0 @@
---- ./Makefile
-+++ ./Makefile
-@@ -57,16 +57,16 @@
- 	cat findlib.conf.in | \
- 	    $(SH) tools/patch '@SITELIB@' '$(OCAML_SITELIB)' >findlib.conf
- 	if ./tools/cmd_from_same_dir ocamlc; then \
--		echo 'ocamlc="ocamlc.opt"' >>findlib.conf; \
-+		echo 'ocamlc="ocamlc.opt$(EXEC_SUFFIX)"' >>findlib.conf; \
- 	fi
- 	if ./tools/cmd_from_same_dir ocamlopt; then \
--		echo 'ocamlopt="ocamlopt.opt"' >>findlib.conf; \
-+		echo 'ocamlopt="ocamlopt.opt$(EXEC_SUFFIX)"' >>findlib.conf; \
- 	fi
- 	if ./tools/cmd_from_same_dir ocamldep; then \
--		echo 'ocamldep="ocamldep.opt"' >>findlib.conf; \
-+		echo 'ocamldep="ocamldep.opt$(EXEC_SUFFIX)"' >>findlib.conf; \
- 	fi
- 	if ./tools/cmd_from_same_dir ocamldoc; then \
--		echo 'ocamldoc="ocamldoc.opt"' >>findlib.conf; \
-+		echo 'ocamldoc="ocamldoc.opt$(EXEC_SUFFIX)"' >>findlib.conf; \
- 	fi
- 
- .PHONY: install-doc
---- ./src/findlib/findlib_config.mlp
-+++ ./src/findlib/findlib_config.mlp
-@@ -24,3 +24,5 @@
-     | "MacOS" -> ""        (* don't know *)
-     | _ -> failwith "Unknown Sys.os_type"
- ;;
-+
-+let exec_suffix = "@EXEC_SUFFIX@";;
---- ./src/findlib/findlib.ml
-+++ ./src/findlib/findlib.ml
-@@ -28,15 +28,20 @@
- let conf_ldconf = ref "";;
- let conf_ignore_dups_in = ref ([] : string list);;
- 
--let ocamlc_default = "ocamlc";;
--let ocamlopt_default = "ocamlopt";;
--let ocamlcp_default = "ocamlcp";;
--let ocamloptp_default = "ocamloptp";;
--let ocamlmklib_default = "ocamlmklib";;
--let ocamlmktop_default = "ocamlmktop";;
--let ocamldep_default = "ocamldep";;
--let ocamlbrowser_default = "ocamlbrowser";;
--let ocamldoc_default = "ocamldoc";;
-+let add_exec str =
-+  match Findlib_config.exec_suffix with
-+  | "" -> str
-+  | a  -> str ^ a ;;
-+let ocamlc_default = add_exec "ocamlc";;
-+let ocamlopt_default = add_exec "ocamlopt";;
-+let ocamlcp_default = add_exec "ocamlcp";;
-+let ocamloptp_default = add_exec "ocamloptp";;
-+let ocamlmklib_default = add_exec "ocamlmklib";;
-+let ocamlmktop_default = add_exec "ocamlmktop";;
-+let ocamldep_default = add_exec "ocamldep";;
-+let ocamlbrowser_default = add_exec "ocamlbrowser";;
-+let ocamldoc_default = add_exec "ocamldoc";;
-+
- 
- 
- let init_manually 
---- ./src/findlib/fl_package_base.ml
-+++ ./src/findlib/fl_package_base.ml
-@@ -133,7 +133,15 @@
- 	  List.find (fun def -> def.def_var = "exists_if") p.package_defs  in
- 	let files = Fl_split.in_words def.def_value in
- 	List.exists 
--	  (fun file -> Sys.file_exists (Filename.concat d' file))
-+	  (fun file ->
-+            let fln = Filename.concat d' file in
-+            let e = Sys.file_exists fln in
-+            (* necessary for ppx executables *)
-+            if e || Sys.os_type <> "Win32" || Filename.check_suffix fln ".exe" then
-+              e
-+            else
-+              Sys.file_exists (fln ^ ".exe")
-+          )
- 	  files
-       with Not_found -> true in
- 
---- ./src/findlib/fl_split.ml
-+++ ./src/findlib/fl_split.ml
-@@ -126,10 +126,17 @@
-     | '/' | '\\' -> true
-     | _ -> false in
-   let norm_dir_win() =
--    if l >= 1 && s.[0] = '/' then
--      Buffer.add_char b '\\' else Buffer.add_char b s.[0];
--    if l >= 2 && s.[1] = '/' then
--      Buffer.add_char b '\\' else Buffer.add_char b s.[1];
-+    if l >= 1 then (
-+      if s.[0] = '/' then
-+        Buffer.add_char b '\\'
-+      else
-+        Buffer.add_char b s.[0] ;
-+      if l >= 2 then
-+        if s.[1] = '/' then
-+          Buffer.add_char b '\\'
-+        else
-+          Buffer.add_char b s.[1];
-+    );
-     for k = 2 to l - 1 do
-       let c = s.[k] in
-       if is_slash c then (
---- ./src/findlib/frontend.ml
-+++ ./src/findlib/frontend.ml
-@@ -31,10 +31,18 @@
-   else
-     Sys_error (arg ^ ": " ^ Unix.error_message code)
- 
-+let is_win = Sys.os_type = "Win32"
-+
-+let () =
-+  match Findlib_config.system with
-+    | "win32" | "win64" | "mingw" | "cygwin" | "mingw64" | "cygwin64" ->
-+      (try set_binary_mode_out stdout true with _ -> ());
-+      (try set_binary_mode_out stderr true with _ -> ());
-+    | _ -> ()
- 
- let slashify s =
-   match Findlib_config.system with
--    | "mingw" | "mingw64" | "cygwin" ->
-+    | "win32" | "win64" | "mingw" | "cygwin" | "mingw64" | "cygwin64" ->
-         let b = Buffer.create 80 in
-         String.iter
-           (function
-@@ -49,7 +57,7 @@
- 
- let out_path ?(prefix="") s =
-   match Findlib_config.system with
--    | "mingw" | "mingw64" | "cygwin" ->
-+   | "win32" | "win64" | "mingw" | "mingw64" | "cygwin" ->
- 	let u = slashify s in
- 	prefix ^ 
- 	  (if String.contains u ' ' then
-@@ -273,11 +281,9 @@
- 
- 
- let identify_dir d =
--  match Sys.os_type with
--    | "Win32" ->
--	failwith "identify_dir"   (* not available *)
--    | _ ->
--	let s = Unix.stat d in
-+  if is_win then
-+    failwith "identify_dir";   (* not available *)
-+  let s = Unix.stat d in
- 	(s.Unix.st_dev, s.Unix.st_ino)
- ;;
- 
-@@ -459,6 +465,96 @@
-       )
-       packages
- 
-+let rewrite_cmd s =
-+  if s = "" || not is_win then
-+    s
-+  else
-+    let s =
-+      let l = String.length s in
-+      let b = Buffer.create l in
-+      for i = 0 to pred l do
-+        match s.[i] with
-+        | '/' -> Buffer.add_char b '\\'
-+        | x -> Buffer.add_char b x
-+      done;
-+      Buffer.contents b
-+    in
-+    if (Filename.is_implicit s && String.contains s '\\' = false) ||
-+      Filename.check_suffix (String.lowercase s) ".exe" then
-+      s
-+    else
-+      let s' = s ^ ".exe" in
-+      if Sys.file_exists s' then
-+        s'
-+      else
-+        s
-+
-+let rewrite_cmd s =
-+  if s = "" || not is_win then s else
-+  let s =
-+    let l = String.length s in
-+    let b = Buffer.create l in
-+    for i = 0 to pred l do
-+      match s.[i] with
-+      | '/' -> Buffer.add_char b '\\'
-+      | x -> Buffer.add_char b x
-+    done;
-+    Buffer.contents b
-+  in
-+  if (Filename.is_implicit s && String.contains s '\\' = false) ||
-+     Filename.check_suffix (String.lowercase s) ".exe" then
-+    s
-+  else
-+    let s' = s ^ ".exe" in
-+    if Sys.file_exists s' then
-+      s'
-+    else
-+      s
-+
-+let rewrite_pp cmd =
-+  if not is_win then cmd else
-+  let module T = struct exception Keep end in
-+  let is_whitespace = function
-+  | ' ' | '\011' | '\012' | '\n' | '\r' | '\t' -> true
-+  | _ -> false in
-+  (* characters that triggers special behaviour (cmd.exe, not unix shell) *)
-+  let is_unsafe_char = function
-+  | '(' | ')' | '%' | '!' | '^' | '<' | '>' | '&' -> true
-+  | _ -> false in
-+  let len = String.length cmd in
-+  let buf = Buffer.create (len + 4) in
-+  let buf_cmd = Buffer.create len in
-+  let rec iter_ws i =
-+    if i >= len then () else
-+    let cur = cmd.[i] in
-+    if is_whitespace cur then (
-+      Buffer.add_char buf cur;
-+      iter_ws (succ i)
-+    )
-+    else
-+      iter_cmd i
-+  and iter_cmd i =
-+    if i >= len then add_buf_cmd () else
-+    let cur = cmd.[i] in
-+    if is_unsafe_char cur || cur = '"' || cur = '\'' then
-+      raise T.Keep;
-+    if is_whitespace cur then (
-+      add_buf_cmd ();
-+      Buffer.add_substring buf cmd i (len - i)
-+    )
-+    else (
-+      Buffer.add_char buf_cmd cur;
-+      iter_cmd (succ i)
-+    )
-+  and add_buf_cmd () =
-+    if Buffer.length buf_cmd > 0 then
-+      Buffer.add_string buf (rewrite_cmd (Buffer.contents buf_cmd))
-+  in
-+  try
-+    iter_ws 0;
-+    Buffer.contents buf
-+  with
-+  | T.Keep -> cmd
- 
- let process_pp_spec syntax_preds packages pp_opts =
-   (* Returns: pp_command *)
-@@ -549,7 +645,7 @@
-       None -> []
-     | Some cmd ->
- 	["-pp";
--	 cmd ^ " " ^
-+	 (rewrite_cmd cmd) ^ " " ^
- 	 String.concat " " (List.map Filename.quote pp_i_options) ^ " " ^
- 	 String.concat " " (List.map Filename.quote pp_archives) ^ " " ^
- 	 String.concat " " (List.map Filename.quote pp_opts)]
-@@ -625,9 +721,11 @@
-           in
-           try
-             let preprocessor =
-+              rewrite_cmd (
-               resolve_path
-                 ~base ~explicit:true
--                (package_property predicates pname "ppx") in
-+                  (package_property predicates pname "ppx") )
-+            in
-             ["-ppx"; String.concat " " (preprocessor :: options)]
-           with Not_found -> []
-        )
-@@ -895,6 +993,14 @@
-        switch (e.g. -L<path> instead of -L <path>)
-      *)
- 
-+(* We may need to remove files on which we do not have complete control.
-+   On Windows, removing a read-only file fails so try to change the
-+   mode of the file first. *)
-+let remove_file fname =
-+  try Sys.remove fname
-+  with Sys_error _ when is_win ->
-+    (try Unix.chmod fname 0o666 with Unix.Unix_error _ -> ());
-+    Sys.remove fname
- 
- let ocamlc which () =
- 
-@@ -1022,9 +1128,12 @@
-               
- 	      "-intf", 
- 	      Arg.String (fun s -> pass_files := !pass_files @ [ Intf(slashify s) ]);
--              
-+
- 	      "-pp", 
--	      Arg.String (fun s -> pp_specified := true; add_spec_fn "-pp" s);
-+	      Arg.String (fun s -> pp_specified := true; add_spec_fn "-pp" (rewrite_pp s));
-+
-+              "-ppx",
-+              Arg.String (fun s -> add_spec_fn "-ppx" (rewrite_pp s));
- 	      
- 	      "-thread", 
- 	      Arg.Unit (fun _ -> threads := threads_default);
-@@ -1237,7 +1346,7 @@
-     with
-       any ->
- 	close_out initl;
--	Sys.remove initl_file_name;
-+	remove_file initl_file_name;
- 	raise any
-   end;
- 
-@@ -1245,9 +1354,9 @@
-     at_exit
-       (fun () ->
- 	let tr f x = try f x with _ -> () in
--	tr Sys.remove initl_file_name;
--	tr Sys.remove (Filename.chop_extension initl_file_name ^ ".cmi");
--	tr Sys.remove (Filename.chop_extension initl_file_name ^ ".cmo");
-+	tr remove_file initl_file_name;
-+	tr remove_file (Filename.chop_extension initl_file_name ^ ".cmi");
-+	tr remove_file (Filename.chop_extension initl_file_name ^ ".cmo");
-       );
- 
-   let exclude_list = [ stdlibdir; threads_dir; vmthreads_dir ] in
-@@ -1493,7 +1602,9 @@
- 	  [ "-v", Arg.Unit (fun () -> verbose := Verbose);
- 	    "-pp", Arg.String (fun s ->
- 				 pp_specified := true;
--				 options := !options @ ["-pp"; s]);
-+				 options := !options @ ["-pp"; rewrite_pp s]);
-+            "-ppx", Arg.String (fun s ->
-+				 options := !options @ ["-ppx"; rewrite_pp s]);
- 	  ]
-       )
-     )
-@@ -1672,7 +1783,9 @@
- 	      Arg.String (fun s -> add_spec_fn "-I" (slashify (resolve_path s)));
- 
- 	      "-pp", Arg.String (fun s -> pp_specified := true;
--		 	           add_spec_fn "-pp" s);
-+                           add_spec_fn "-pp" (rewrite_pp s));
-+              "-ppx", Arg.String (fun s -> add_spec_fn "-ppx" (rewrite_pp s));
-+
- 	    ]
- 	)
-     )
-@@ -1830,7 +1943,10 @@
-       output_string ch_out append;
-       close_out ch_out;
-       close_in ch_in;
--      Unix.utimes outpath s.Unix.st_mtime s.Unix.st_mtime;
-+      (try Unix.utimes outpath s.Unix.st_mtime s.Unix.st_mtime
-+       with Unix.Unix_error(e,_,_) ->
-+         prerr_endline("Warning: setting utimes for " ^ outpath
-+                       ^ ": " ^ Unix.error_message e));
- 
-       prerr_endline("Installed " ^ outpath);
-     with
-@@ -1882,6 +1998,8 @@
-              Unix.openfile (Filename.concat dir owner_file) [Unix.O_RDONLY] 0 in
-            let f =
-              Unix.in_channel_of_descr fd in
-+           if is_win then
-+             set_binary_mode_in f false;
-            try
-              let line = input_line f in
-              let is_my_file = (line = pkg) in
-@@ -2208,7 +2326,7 @@
-     let lines = read_ldconf !ldconf in
-     let dlldir_norm = Fl_split.norm_dir dlldir in
-     let dlldir_norm_lc = string_lowercase_ascii dlldir_norm in
--    let ci_filesys = (Sys.os_type = "Win32") in
-+    let ci_filesys = is_win in
-     let check_dir d =
-       let d' = Fl_split.norm_dir d in
-       (d' = dlldir_norm) || 
-@@ -2356,7 +2474,7 @@
-       List.iter
-         (fun file ->
-            let absfile = Filename.concat dlldir file in
--           Sys.remove absfile;
-+           remove_file absfile;
-            prerr_endline ("Removed " ^ absfile)
-         )
-         dll_files
-@@ -2365,7 +2483,7 @@
-     (* Remove the files from the package directory: *)
-     if Sys.file_exists pkgdir then begin
-       let files = Sys.readdir pkgdir in
--      Array.iter (fun f -> Sys.remove (Filename.concat pkgdir f)) files;
-+      Array.iter (fun f -> remove_file (Filename.concat pkgdir f)) files;
-       Unix.rmdir pkgdir;
-       prerr_endline ("Removed " ^ pkgdir)
-     end
-@@ -2415,7 +2533,9 @@
- 
- 
- let print_configuration() =
-+  let sl = slashify in
-   let dir s =
-+    let s = sl s in
-     if Sys.file_exists s then
-       s
-     else
-@@ -2453,27 +2573,27 @@
- 	   if md = "" then "the corresponding package directories" else dir md
- 	  );
- 	Printf.printf "The standard library is assumed to reside in:\n    %s\n"
--	  (Findlib.ocaml_stdlib());
-+    (sl (Findlib.ocaml_stdlib()));
- 	Printf.printf "The ld.conf file can be found here:\n    %s\n"
--	  (Findlib.ocaml_ldconf());
-+    (sl (Findlib.ocaml_ldconf()));
- 	flush stdout
-     | Some "conf" ->
--	print_endline (Findlib.config_file())
-+  print_endline (sl (Findlib.config_file()))
-     | Some "path" ->
--	List.iter print_endline (Findlib.search_path())
-+  List.iter ( fun x -> print_endline (sl x)) (Findlib.search_path())
-     | Some "destdir" ->
--	print_endline (Findlib.default_location())
-+  print_endline ( sl (Findlib.default_location()))
-     | Some "metadir" ->
--	print_endline (Findlib.meta_directory())
-+  print_endline ( sl (Findlib.meta_directory()))
-     | Some "metapath" ->
-         let mdir = Findlib.meta_directory() in
-         let ddir = Findlib.default_location() in
--	print_endline 
--          (if mdir <> "" then mdir ^ "/META.%s" else ddir ^ "/%s/META")
-+  print_endline ( sl
-+          (if mdir <> "" then mdir ^ "/META.%s" else ddir ^ "/%s/META"))
-     | Some "stdlib" ->
--	print_endline (Findlib.ocaml_stdlib())
-+  print_endline ( sl (Findlib.ocaml_stdlib()))
-     | Some "ldconf" ->
--	print_endline (Findlib.ocaml_ldconf())
-+  print_endline ( sl (Findlib.ocaml_ldconf()))
-     | _ ->
- 	assert false
- ;;
-@@ -2481,7 +2601,7 @@
- 
- let ocamlcall pkg cmd =
-   let dir = package_directory pkg in
--  let path = Filename.concat dir cmd in
-+  let path = rewrite_cmd (Filename.concat dir cmd) in
-   begin
-     try Unix.access path [ Unix.X_OK ]
-     with
-@@ -2647,6 +2767,10 @@
-   | Sys_error f ->
-       prerr_endline ("ocamlfind: " ^ f);
-       exit 2
-+  | Unix.Unix_error (e, fn, f) ->
-+      prerr_endline ("ocamlfind: " ^ fn ^ " " ^ f
-+                     ^ ": " ^ Unix.error_message e);
-+      exit 2
-   | Findlib.No_such_package(pkg,info) ->
-       prerr_endline ("ocamlfind: Package `" ^ pkg ^ "' not found" ^
- 		     (if info <> "" then " - " ^ info else ""));
---- ./src/findlib/Makefile
-+++ ./src/findlib/Makefile
-@@ -90,6 +90,7 @@
- 	cat findlib_config.mlp | \
- 	        $(SH) $(TOP)/tools/patch '@CONFIGFILE@' '$(OCAMLFIND_CONF)' | \
- 	        $(SH) $(TOP)/tools/patch '@STDLIB@' '$(OCAML_CORE_STDLIB)' | \
-+			$(SH) $(TOP)/tools/patch '@EXEC_SUFFIX@' '$(EXEC_SUFFIX)' | \
- 		sed -e 's;@AUTOLINK@;$(OCAML_AUTOLINK);g' \
- 		    -e 's;@SYSTEM@;$(SYSTEM);g' \
- 		     >findlib_config.ml
diff --git a/fmt.esy.lock/overrides/opam__s__ocamlfind_opam__c__1.8.1_opam_override/package.json b/fmt.esy.lock/overrides/opam__s__ocamlfind_opam__c__1.8.1_opam_override/package.json
deleted file mode 100644
index 9314f87..0000000
--- a/fmt.esy.lock/overrides/opam__s__ocamlfind_opam__c__1.8.1_opam_override/package.json
+++ /dev/null
@@ -1,61 +0,0 @@
-{
-  "build": [
-    [
-      "bash",
-      "-c",
-      "#{os == 'windows' ? 'patch -p1 < findlib-1.8.1.patch' : 'true'}"
-    ],
-    [
-      "./configure",
-      "-bindir",
-      "#{self.bin}",
-      "-sitelib",
-      "#{self.lib}",
-      "-mandir",
-      "#{self.man}",
-      "-config",
-      "#{self.lib}/findlib.conf",
-      "-no-custom",
-      "-no-topfind"
-    ],
-    [
-      "make",
-      "all"
-    ],
-    [
-      "make",
-      "opt"
-    ]
-  ],
-  "install": [
-    [
-      "make",
-      "install"
-    ],
-    [
-      "install",
-      "-m",
-      "0755",
-      "ocaml-stub",
-      "#{self.bin}/ocaml"
-    ],
-    [
-      "mkdir",
-      "-p",
-      "#{self.toplevel}"
-    ],
-    [
-      "install",
-      "-m",
-      "0644",
-      "src/findlib/topfind",
-      "#{self.toplevel}/topfind"
-    ]
-  ],
-  "exportedEnv": {
-    "OCAML_TOPLEVEL_PATH": {
-      "val": "#{self.toplevel}",
-      "scope": "global"
-    }
-  }
-}
diff --git a/fmt.json b/fmt.json
deleted file mode 100644
index d09ac7a..0000000
--- a/fmt.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-  "devDependencies": {
-    "ocaml": "~4.6.0",
-    "@esy-ocaml/reason": "*"
-  }
-}
diff --git a/fnm-manifest.rc b/fnm-manifest.rc
new file mode 100644
index 0000000..cb2a2e6
--- /dev/null
+++ b/fnm-manifest.rc
@@ -0,0 +1,2 @@
+#define RT_MANIFEST 24
+1 RT_MANIFEST "fnm.manifest"
\ No newline at end of file
diff --git a/fnm.manifest b/fnm.manifest
new file mode 100644
index 0000000..4a2fe9d
--- /dev/null
+++ b/fnm.manifest
@@ -0,0 +1,11 @@
+<?xml version='1.0' encoding='utf-8' standalone='yes'?>
+<assembly
+    xmlns="urn:schemas-microsoft-com:asm.v1"
+    manifestVersion="1.0"
+    >
+  <application xmlns="urn:schemas-microsoft-com:asm.v3">
+    <windowsSettings>
+      <longPathAware xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">true</longPathAware>
+    </windowsSettings>
+  </application>
+</assembly>
diff --git a/fnm.opam b/fnm.opam
deleted file mode 100644
index e69de29..0000000
diff --git a/library/Compression.re b/library/Compression.re
deleted file mode 100644
index b999670..0000000
--- a/library/Compression.re
+++ /dev/null
@@ -1,15 +0,0 @@
-let extractFile = (~into as destination, filepath) => {
-  let%lwt _ = System.mkdirp(destination);
-  let%lwt _ =
-    System.unix_exec(
-      "tar",
-      ~args=[|"-xvf", filepath, "--directory", destination|],
-      ~stderr=`Dev_null,
-    );
-  let%lwt files = Fs.readdir(destination);
-  let filename = List.hd(files);
-  Lwt_unix.rename(
-    Filename.concat(destination, filename),
-    Filename.concat(destination, "installation"),
-  );
-};
diff --git a/library/Config.re b/library/Config.re
deleted file mode 100644
index 48a94a0..0000000
--- a/library/Config.re
+++ /dev/null
@@ -1,111 +0,0 @@
-type variable_doc('t) = {
-  name: string,
-  doc: string,
-  default: string,
-};
-
-module EnvVar =
-       (
-         M: {
-           type t;
-           let name: string;
-           let doc: string;
-           let default: t;
-           let parse: string => t;
-           let unparse: t => string;
-         },
-       ) => {
-  include M;
-  let optValue = Sys.getenv_opt(name) |> Opt.map(parse);
-  let getOpt = () => optValue;
-  let get = () => Opt.(getOpt() or default);
-  let docInfo = {name, doc, default: unparse(default)};
-};
-
-let ensureTrailingBackslash = str =>
-  switch (str.[String.length(str) - 1]) {
-  | '/' => str
-  | _ => str ++ "/"
-  };
-
-module FNM_NODE_DIST_MIRROR =
-  EnvVar({
-    type t = string;
-    let name = "FNM_NODE_DIST_MIRROR";
-    let doc = "https://nodejs.org/dist/ mirror";
-    let default = "https://nodejs.org/dist/";
-    let parse = ensureTrailingBackslash;
-    let unparse = ensureTrailingBackslash;
-  });
-
-module FNM_DIR =
-  EnvVar({
-    type t = string;
-    let parse = ensureTrailingBackslash;
-    let unparse = ensureTrailingBackslash;
-    let name = "FNM_DIR";
-    let doc = "The root directory of fnm installations.";
-    let default = {
-      let home =
-        Sys.getenv_opt("HOME")
-        |> Opt.orThrow("There isn't $HOME environment variable set.");
-      Filename.concat(home, ".fnm");
-    };
-  });
-
-module FNM_MULTISHELL_PATH =
-  EnvVar({
-    type t = string;
-    let parse = x => x;
-    let unparse = x => x;
-    let name = "FNM_MULTISHELL_PATH";
-    let doc = "Where the current node version link is stored";
-    let default = "";
-  });
-
-module FNM_LOGLEVEL =
-  EnvVar({
-    type t = LogLevel.t;
-    let parse = LogLevel.fromString;
-    let unparse = LogLevel.toString;
-    let name = "FNM_LOGLEVEL";
-    let doc = "The log level of fnm commands";
-    let default = LogLevel.Info;
-  });
-
-let parseBooleanOrDie = (~name, str) =>
-  switch (bool_of_string_opt(str)) {
-  | Some(boolean) => boolean
-  | None =>
-    let errorString =
-      <Pastel color=Pastel.Red>
-        <Pastel color=Pastel.Cyan> str </Pastel>
-        " isn't a valid option for "
-        <Pastel color=Pastel.Magenta> name </Pastel>
-        " which assumes a boolean value. Consider passing "
-        <Pastel color=Pastel.Cyan> "true" </Pastel>
-        " or "
-        <Pastel color=Pastel.Cyan> "false" </Pastel>
-        "."
-      </Pastel>;
-    Printf.eprintf("%s\n", errorString);
-    exit(1);
-  };
-
-module FNM_INTERACTIVE_CLI =
-  EnvVar({
-    type t = bool;
-    let default = Unix.(isatty(stdin) && isatty(stdout) && isatty(stderr));
-    let unparse = string_of_bool;
-    let name = "FNM_INTERACTIVE_CLI";
-    let doc = "Should the CLI be interactive? true/false";
-    let parse = parseBooleanOrDie(~name);
-  });
-
-let getDocs = () => [
-  FNM_DIR.docInfo,
-  FNM_NODE_DIST_MIRROR.docInfo,
-  FNM_MULTISHELL_PATH.docInfo,
-  FNM_INTERACTIVE_CLI.docInfo,
-  FNM_LOGLEVEL.docInfo,
-];
diff --git a/library/Directories.re b/library/Directories.re
deleted file mode 100644
index c96d8b1..0000000
--- a/library/Directories.re
+++ /dev/null
@@ -1,8 +0,0 @@
-let sfwRoot = Config.FNM_DIR.get();
-let nodeVersions = Filename.concat(sfwRoot, "node-versions");
-let globalCurrentVersion = Filename.concat(sfwRoot, "current");
-let currentVersion =
-  Opt.(Sys.getenv_opt("FNM_MULTISHELL_PATH") or globalCurrentVersion);
-let downloads = Filename.concat(sfwRoot, "downloads");
-let aliases = Filename.concat(sfwRoot, "aliases");
-let defaultVersion = Filename.concat(aliases, "default");
diff --git a/library/Dotfiles.re b/library/Dotfiles.re
deleted file mode 100644
index 75ebc82..0000000
--- a/library/Dotfiles.re
+++ /dev/null
@@ -1,29 +0,0 @@
-exception Version_Not_Provided;
-exception Conflicting_Dotfiles_Found(string, string);
-
-let versionString = fileName => {
-  try%lwt(
-    Lwt_io.lines_of_file(fileName)
-    |> Lwt_stream.to_list
-    |> Lwt.map(List.hd)
-    |> Lwt.map(String.trim)
-    |> Lwt.map(versionString => Some(versionString))
-  ) {
-  | Unix.Unix_error(Unix.ENOENT, _, _) => Lwt.return(None)
-  };
-};
-
-let getVersion = () => {
-  let%lwt cwd = Lwt_unix.getcwd();
-  let%lwt nodeVersion = versionString(Filename.concat(cwd, ".node-version"))
-  and nvmrc = versionString(Filename.concat(cwd, ".nvmrc"));
-
-  switch (nodeVersion, nvmrc) {
-  | (None, None) => Lwt.fail(Version_Not_Provided)
-  | (Some(v1), Some(v2)) when Versions.format(v1) != Versions.format(v2) =>
-    Lwt.fail(Conflicting_Dotfiles_Found(v1, v2))
-  | (Some(version), Some(_))
-  | (Some(version), None)
-  | (None, Some(version)) => Lwt.return(version)
-  };
-};
diff --git a/library/Fnm__Package.re b/library/Fnm__Package.re
deleted file mode 100644
index a9f7861..0000000
--- a/library/Fnm__Package.re
+++ /dev/null
@@ -1 +0,0 @@
-let version = "1.21.0";
diff --git a/library/Fs.re b/library/Fs.re
deleted file mode 100644
index cbd20e1..0000000
--- a/library/Fs.re
+++ /dev/null
@@ -1,94 +0,0 @@
-let readdir = dir => {
-  let items = ref([]);
-  let%lwt dir = Lwt_unix.opendir(dir);
-  let iterate = () => {
-    let%lwt _ =
-      while%lwt (true) {
-        let%lwt value = Lwt_unix.readdir(dir);
-        if (value.[0] != '.') {
-          items := [value, ...items^];
-        };
-        Lwt.return();
-      };
-
-    Lwt.return([]);
-  };
-
-  let%lwt items =
-    try%lwt(iterate()) {
-    | End_of_file => Lwt.return(items^)
-    };
-
-  let%lwt _ = Lwt_unix.closedir(dir);
-  Lwt.return(items);
-};
-
-let writeFile = (path, contents) => {
-  let%lwt targetFile = Lwt_io.open_file(~mode=Lwt_io.Output, path);
-
-  let%lwt () = Lwt_io.write(targetFile, contents);
-  let%lwt () = Lwt_io.close(targetFile);
-
-  Lwt.return();
-};
-
-let exists = path => {
-  try%lwt(Lwt_unix.file_exists(path)) {
-  | Unix.Unix_error(_, _, _) => Lwt.return(false)
-  };
-};
-
-let readlink = path =>
-  try%lwt(Lwt_unix.readlink(path) |> Lwt.map(x => Ok(x))) {
-  | err => Lwt.return_error(err)
-  };
-
-[@deriving show]
-type file_type =
-  | File(string)
-  | Dir(string);
-
-// Based on: https://github.com/fastpack/fastpack/blob/9f6aa7d5b83ffef03e73a15679200576ff9dbcb7/FastpackUtil/FS.re#L94
-let rec listDirRecursively = dir => {
-  switch%lwt (Lwt_unix.lstat(dir)) {
-  | {st_kind: Lwt_unix.S_DIR, _} =>
-    Lwt_unix.files_of_directory(dir)
-    |> Lwt_stream.map_list_s(
-         fun
-         | "."
-         | ".." => Lwt.return([])
-         | filename => Filename.concat(dir, filename) |> listDirRecursively,
-       )
-    |> Lwt_stream.to_list
-    |> Lwt.map(xs => List.append(xs, [Dir(dir)]))
-  | _ => Lwt.return([File(dir)])
-  | exception (Unix.Unix_error(Unix.ENOENT, _, _)) => Lwt.return([])
-  };
-};
-
-let rmdir = dir => {
-  let%lwt entities = listDirRecursively(dir);
-
-  entities
-  |> Lwt_list.map_s(
-       fun
-       | Dir(dir) => Lwt_unix.rmdir(dir)
-       | File(file) => Lwt_unix.unlink(file),
-     )
-  |> Lwt.map(_ => ());
-};
-
-type path =
-  | Exists(string)
-  | Missing(string);
-
-let rec realpath = path => {
-  switch%lwt (readlink(path)) {
-  | Ok(path) => realpath(path)
-  | Error(_) =>
-    switch%lwt (exists(path)) {
-    | true => Exists(path) |> Lwt.return
-    | false => Missing(path) |> Lwt.return
-    }
-  };
-};
diff --git a/library/Http.re b/library/Http.re
deleted file mode 100644
index 55b7d48..0000000
--- a/library/Http.re
+++ /dev/null
@@ -1,42 +0,0 @@
-open Lwt.Infix;
-open Cohttp;
-open Cohttp_lwt_unix;
-
-type response = {
-  body: string,
-  status: int,
-};
-
-let body = response => response.body;
-let status = response => response.status;
-
-exception Not_found(response);
-
-let throwOnKnownErrors =
-  fun
-  | {status: 404, _} as r => Lwt.fail(Not_found(r))
-  | r => Lwt.return(r);
-
-let rec makeRequest = url =>
-  Uri.of_string(url)
-  |> Cohttp_lwt_unix.Client.get
-  >>= (
-    ((resp, body)) => {
-      let status = resp |> Response.status;
-      let code_of_status = status |> Code.code_of_status;
-      let location = resp |> Response.headers |> Header.get_location;
-
-      switch (Code.is_redirection(code_of_status), location) {
-      | (true, Some(uri)) => makeRequest(Uri.to_string(uri))
-      | _ =>
-        let%lwt body = body |> Cohttp_lwt.Body.to_string;
-        throwOnKnownErrors({status: code_of_status, body});
-      };
-    }
-  );
-
-let download = (url, ~into) => {
-  let%lwt _ =
-    makeRequest(url) >>= (({body, _}) => Fs.writeFile(into, body));
-  Lwt.return();
-};
diff --git a/library/LocalVersionResolver.re b/library/LocalVersionResolver.re
deleted file mode 100644
index b4022f6..0000000
--- a/library/LocalVersionResolver.re
+++ /dev/null
@@ -1,39 +0,0 @@
-exception Version_Not_Installed(string);
-
-/** Parse a local version, including lts and aliases */
-let getVersion = version => {
-  let%lwt parsed = Versions.parse(version);
-  let%lwt resultWithLts =
-    switch (parsed) {
-    | Ok(x) => Lwt.return_ok(x)
-    | Error("latest-*") =>
-      switch%lwt (VersionListingLts.getLatest()) {
-      | Error(_) => Lwt.return_error(Version_Not_Installed(version))
-      | Ok({VersionListingLts.lts, _}) =>
-        Versions.Alias("latest-" ++ lts) |> Lwt.return_ok
-      }
-    | _ => Version_Not_Installed(version) |> Lwt.return_error
-    };
-  resultWithLts |> Result.fold(Lwt.fail, Lwt.return);
-};
-
-/**
- * Get matches for all versions that match a semver partial
- */
-let getMatchingLocalVersions = version => {
-  open Versions.Local;
-
-  let%lwt installedVersions = Versions.getInstalledVersions();
-  let formattedVersionName = Versions.format(version);
-
-  let matchingVersions =
-    installedVersions
-    |> List.filter(v =>
-         Versions.isVersionFitsPrefix(formattedVersionName, v.name)
-         || v.name == formattedVersionName
-         || List.exists(alias => alias == formattedVersionName, v.aliases)
-       )
-    |> List.sort((a, b) => - compare(a.name, b.name));
-
-  Lwt.return(matchingVersions);
-};
diff --git a/library/LogLevel.re b/library/LogLevel.re
deleted file mode 100644
index d2ce4f4..0000000
--- a/library/LogLevel.re
+++ /dev/null
@@ -1,23 +0,0 @@
-type t =
-  | Quiet
-  | Error
-  | Info
-  | Debug;
-
-let toString = logLevel =>
-  switch (logLevel) {
-  | Quiet => "quiet"
-  | Error => "error"
-  | Info => "info"
-  | Debug => "debug"
-  };
-
-let fromString = logLevelString =>
-  switch (logLevelString) {
-  | "quiet" => Quiet
-  | "error" => Error
-  | "info" => Info
-  | "debug"
-  | "all" => Debug
-  | _ => failwith("Unsupported level: " ++ logLevelString)
-  };
diff --git a/library/Logger.re b/library/Logger.re
deleted file mode 100644
index 30b846e..0000000
--- a/library/Logger.re
+++ /dev/null
@@ -1,28 +0,0 @@
-let configuredLogLevel = Config.FNM_LOGLEVEL.get();
-
-let info = message => {
-  switch (configuredLogLevel) {
-  | LogLevel.Debug
-  | LogLevel.Info => Console.log(message)
-  | LogLevel.Error
-  | LogLevel.Quiet => ()
-  };
-};
-
-let debug = message => {
-  switch (configuredLogLevel) {
-  | LogLevel.Debug => Console.log(message)
-  | LogLevel.Info
-  | LogLevel.Error
-  | LogLevel.Quiet => ()
-  };
-};
-
-let error = message => {
-  switch (configuredLogLevel) {
-  | LogLevel.Debug
-  | LogLevel.Info
-  | LogLevel.Error => Console.error(message)
-  | LogLevel.Quiet => ()
-  };
-};
diff --git a/library/Opt.re b/library/Opt.re
deleted file mode 100644
index 6d68d52..0000000
--- a/library/Opt.re
+++ /dev/null
@@ -1,39 +0,0 @@
-let orThrow = (message, opt) =>
-  switch (opt) {
-  | None => failwith(message)
-  | Some(x) => x
-  };
-
-let map = (fn, opt) =>
-  switch (opt) {
-  | None => None
-  | Some(x) => Some(fn(x))
-  };
-
-let bind = (fn, opt) =>
-  switch (opt) {
-  | None => None
-  | Some(x) => fn(x)
-  };
-
-let fold = (none, some, opt) =>
-  switch (opt) {
-  | None => none()
-  | Some(x) => some(x)
-  };
-
-let toResult = (error, opt) =>
-  switch (opt) {
-  | None => Error(error)
-  | Some(x) => Ok(x)
-  };
-
-let toLwt = (error, opt) =>
-  switch (opt) {
-  | Some(x) => Lwt.return(x)
-  | None => Lwt.fail(error)
-  };
-
-let some = x => Some(x);
-
-let (or) = (opt, b) => fold(() => b, x => x, opt);
diff --git a/library/Path.re b/library/Path.re
deleted file mode 100644
index 2218527..0000000
--- a/library/Path.re
+++ /dev/null
@@ -1,504 +0,0 @@
-/**
- * Copyright 2004-present Facebook. All Rights Reserved.
- *
- * @emails oncall+ads_front_end_infra
- */;
-
-[@warning "-27-39-32-34"];
-
-let sep = "/";
-let homeChar = "~";
-
-type absolute;
-type relative;
-type upDirs = int; /* int 0 implies ./ and 1 implies ../ etc */
-
-/**
- * We might eventually want to allow extending this with many
- * reference points.
- */
-type relFrom =
-  | Home
-  | Any;
-type base('kind) =
-  /* Optional drive name */
-  | Abs(option(string)): base(absolute)
-  | Rel(relFrom, upDirs): base(relative);
-/**
- * Internal representation of paths. The list of strings represents all
- * subdirectories after the base (in reverse order - head of the list is the
- * rightmost segment of the path).
- */
-type t('kind) = (base('kind), list(string));
-type firstClass =
-  | Absolute(t(absolute))
-  | Relative(t(relative));
-type opaqueBase =
-  | Base(base('exists)): opaqueBase;
-
-let drive = name => (Abs(Some(name)), []);
-let root = (Abs(None), []);
-let home = (Rel(Home, 0), []);
-let dot = (Rel(Any, 0), []);
-
-let hasParentDir = ((Abs(_), lst): t(absolute)) => lst !== [];
-
-let rec revSegmentsAreInside = (~ofSegments, l) =>
-  switch (ofSegments, l) {
-  | ([], [_, ..._]) => true
-  | ([], []) => true
-  | ([_, ..._], []) => false
-  | ([hd, ...tl], [hd2, ...tl2]) =>
-    String.equal(hd, hd2) && revSegmentsAreInside(~ofSegments=tl, tl2)
-  };
-
-let segmentsAreInside = (~ofSegments, l) =>
-  revSegmentsAreInside(~ofSegments=List.rev(ofSegments), List.rev(l));
-
-let isDescendent: type kind. (~ofPath: t(kind), t(kind)) => bool =
-  (~ofPath, p) =>
-    switch (ofPath, p) {
-    | ((Abs(dr1), l1), (Abs(dr2), l2)) =>
-      switch (dr1, dr2) {
-      | (None, None) => segmentsAreInside(~ofSegments=l1, l2)
-      | (Some(d1), Some(d2)) =>
-        String.equal(d1, d2) && segmentsAreInside(~ofSegments=l1, l2)
-      | (Some(_), None)
-      | (None, Some(_)) => false
-      }
-    | ((Rel(Any, d1), l1), (Rel(Any, d2), l2)) =>
-      d1 === d2 && segmentsAreInside(~ofSegments=l1, l2)
-    | ((Rel(Home, d1), l1), (Rel(Home, d2), l2)) =>
-      d1 === d2 && segmentsAreInside(~ofSegments=l1, l2)
-    | ((Rel(Any, _), _), (Rel(Home, _), _)) => false
-    | ((Rel(Home, _), _), (Rel(Any, _), _)) => false
-    };
-
-let toString: type kind. t(kind) => string =
-  path =>
-    switch (path) {
-    | (Abs(l), lst) =>
-      let lbl =
-        switch (l) {
-        | None => ""
-        | Some(txt) => txt
-        };
-      lbl ++ "/" ++ (lst |> List.rev |> String.concat(sep));
-    | (Rel(w, i), lst) =>
-      let init =
-        switch (w) {
-        | Any => "." ++ sep
-        | Home => "~" ++ sep
-        };
-      let rest =
-        lst
-        |> List.rev
-        |> List.append(Array.to_list(Array.init(i, _ => "..")))
-        |> String.concat(sep);
-      init ++ rest;
-    };
-
-/**
- * Expose this under the name `toDebugString` and accept any kind of path.
- * The name is to warn people about using this for relative paths. This may
- * print paths like `"."` and `"~"`, which is not very meaningful.
- */
-let toDebugString = toString;
-
-type token =
-  | SLASH
-  | DOT
-  | TILDE
-  | DOTDOT
-  | DRIVE(string)
-  | TXT(string);
-
-let makeToken = s =>
-  switch (s) {
-  | "~" => TILDE
-  | "." => DOT
-  | ".." => DOTDOT
-  | s when String.length(s) >= 2 && s.[String.length(s) - 1] === ':' =>
-    DRIVE(s)
-  | s => TXT(s)
-  };
-/*
- * Splits on slashes, but being intelligent about escaped slashes.
- */
-let lex = s => {
-  let s = String.trim(s);
-  let len = String.length(s);
-  let revTokens = {contents: []};
-  /* j is what you are all caught up to */
-  let j = {contents: (-1)};
-  let prevEsc = {contents: false};
-  for (i in 0 to len - 1) {
-    let ch = String.unsafe_get(s, i);
-    if (ch === '/' && !prevEsc.contents) {
-      if (j.contents !== i - 1) {
-        let tok =
-          makeToken(String.sub(s, j.contents + 1, i - j.contents - 1));
-        revTokens.contents = [tok, ...revTokens.contents];
-      };
-      revTokens.contents = [SLASH, ...revTokens.contents];
-      j.contents = i;
-    };
-    prevEsc.contents = ch === '\\' && !prevEsc.contents;
-  };
-  let rev =
-    j.contents === len - 1
-      ? revTokens.contents
-      : [
-        makeToken(String.sub(s, j.contents + 1, len - 1 - j.contents)),
-        ...revTokens.contents,
-      ];
-  List.rev(rev);
-};
-
-let _parseFirstToken = token =>
-  switch (token) {
-  | SLASH => (Base(Abs(None)), [])
-  | DOT => (Base(Rel(Any, 0)), [])
-  | TILDE => (Base(Rel(Home, 0)), [])
-  | DOTDOT => (Base(Rel(Any, 1)), [])
-  | DRIVE(l) => (Base(Abs(Some(l))), [])
-  | TXT(s) => (Base(Rel(Any, 0)), [s])
-  };
-
-let parseNextToken: type kind. (t(kind), token) => t(kind) =
-  (path, nextToken) =>
-    switch (path, nextToken) {
-    | (path, SLASH) => path
-    | (path, DOT) => path
-    | ((base, subs), TILDE) => (base, [homeChar, ...subs])
-    | ((base, subs), DRIVE(l)) => (base, [l, ...subs])
-    | ((base, subs), TXT(s)) => (base, [s, ...subs])
-    | ((base, [hd, ...tl]), DOTDOT) => (base, tl)
-    | ((Rel(Any, r), []), DOTDOT) => (Rel(Any, r + 1), [])
-    | ((Rel(Home, r), []), DOTDOT) => (Rel(Home, r + 1), [])
-    | ((Abs(_), []), DOTDOT) => path
-    };
-
-let parseFirstTokenAbsolute = token =>
-  switch (token) {
-  | SLASH => Some((Abs(None), []))
-  | DRIVE(l) => Some((Abs(Some(l)), []))
-  | TXT(_)
-  | DOT
-  | TILDE
-  | DOTDOT => None
-  };
-
-let parseFirstTokenRelative = token =>
-  switch (token) {
-  | DOT => Some((Rel(Any, 0), []))
-  | TILDE => Some((Rel(Home, 0), []))
-  | DOTDOT => Some((Rel(Any, 1), []))
-  | TXT(s) => Some((Rel(Any, 0), [s]))
-  | SLASH => None
-  | DRIVE(l) => None
-  };
-
-let absolute = s =>
-  switch (lex(s)) {
-  /* Cannot pass empty string for absolute path */
-  | [] => None
-  | [hd, ...tl] =>
-    switch (parseFirstTokenAbsolute(hd)) {
-    | None => None
-    | Some(initAbsPath) =>
-      Some(List.fold_left(parseNextToken, initAbsPath, tl))
-    }
-  };
-
-let absoluteExn = s =>
-  switch (lex(s)) {
-  /* Cannot pass empty string for absolute path */
-  | [] => raise(Invalid_argument("Empty path is not a valid absolute path."))
-  | [hd, ...tl] =>
-    switch (parseFirstTokenAbsolute(hd)) {
-    | None =>
-      raise(
-        Invalid_argument("First token in path " ++ s ++ " is not absolute."),
-      )
-    | Some(initAbsPath) => List.fold_left(parseNextToken, initAbsPath, tl)
-    }
-  };
-
-let relative = s => {
-  let (tok, tl) =
-    switch (lex(s)) {
-    | [] => (DOT, [])
-    | [hd, ...tl] => (hd, tl)
-    };
-  switch (parseFirstTokenRelative(tok)) {
-  | None => None
-  | Some(initRelPath) =>
-    Some(List.fold_left(parseNextToken, initRelPath, tl))
-  };
-};
-
-let relativeExn = s =>
-  switch (lex(s)) {
-  /* Cannot pass empty string for absolute path */
-  | [] => dot
-  | [hd, ...tl] =>
-    switch (parseFirstTokenRelative(hd)) {
-    | None =>
-      raise(
-        Invalid_argument("First token in path " ++ s ++ " not relative."),
-      )
-    | Some(initRelPath) => List.fold_left(parseNextToken, initRelPath, tl)
-    }
-  };
-
-/**
- * Relates two positive integers to zero and eachother.
- */
-type ord =
-  | /** 0 === i === j */
-    Zeros
-  | /** 0 === i < j */
-    ZeroPositive
-  | /** i > 0 === j */
-    PositiveZero
-  | /** 0 < i && 0 < j */
-    Positives;
-
-/**
- * Using `ord` allows us to retain exhaustiveness pattern matching checks that
- * would normally be lost when adding `when i < j` guards to matches. It's
- * very likely inlined so there's no performance hit. Annotate as int so that
- * it isn't inferred to be polymorphic.
- */
-let ord = (i: int, j: int) =>
-  i === 0 && j === 0
-    ? Zeros : i === 0 ? ZeroPositive : j === 0 ? PositiveZero : Positives;
-
-let rec repeat = (soFar, i, s) =>
-  i === 0 ? soFar : repeat(soFar ++ s, i - 1, s);
-
-/*
- *  relativize(a/rest1..., a/rest2...) == relativize(rest1..., rest2...)
- *  relativize(../rest1..., ../rest2...) == relativize(rest1..., res2...)
- *  relativize(a/rest1..., b/rest2...) == [...len(1)]/b/rest2
- *  relativize(../a/rest1..., b/rest2...) == raise
- *  relativize(a/rest1..., ../b/rest2...) == [...len(1)]../b/rest2
- *
- *  "upDirs" is the number of ../ the path is assumed to have. The segments
- *  `s1`/`s2`, are in the path order from left to right, unlike `Path.t` which
- *  usually stores them in reverse order. Relativizing paths is one place where
- *  it's more convenient to have them in the left to right segment order.
- */
-let rec relativizeDepth = ((upDirs1, s1), (upDirs2, s2)) =>
-  switch (ord(upDirs1, upDirs2), s1, s2) {
-  | (Zeros, [hd1, ...tl1], [hd2, ...tl2]) =>
-    if (String.compare(hd1, hd2) === 0) {
-      relativizeDepth((0, tl1), (0, tl2));
-    } else {
-      (List.length(s1), s2);
-    }
-  | (Zeros, [], []) => (0, [])
-  | (Zeros, [], [hd2, ...tl2] as s2) => (upDirs2, s2)
-  | (Zeros, [hd1, ...tl1] as s1, []) => (List.length(s1), [])
-  | (Positives, _, _) =>
-    relativizeDepth((upDirs1 - 1, s1), (upDirs2 - 1, s2))
-  | (ZeroPositive, _, _) => (List.length(s1) + upDirs2, s2)
-  | (PositiveZero, _, _) =>
-    raise(
-      Invalid_argument(
-        "Cannot relativize paths source='"
-        ++ repeat("", upDirs1, "../")
-        ++ String.concat(sep, s1)
-        ++ "' dest='"
-        ++ repeat("", upDirs2, "../")
-        ++ String.concat(sep, s2),
-      ),
-    )
-  };
-
-let raiseDriveMismatch = (p1, p2) =>
-  raise(
-    Invalid_argument(
-      "Cannot relativize paths with different drives or relative roots "
-      ++ toString(p1)
-      ++ " and "
-      ++ toString(p2),
-    ),
-  );
-
-let relativizeExn: type k. (~source: t(k), ~dest: t(k)) => t(relative) =
-  (~source, ~dest) => {
-    let (depth, segs) =
-      switch (source, dest) {
-      | ((Abs(d1), s1), (Abs(d2), s2)) =>
-        switch (d1, d2) {
-        | (None, None) =>
-          relativizeDepth((0, List.rev(s1)), (0, List.rev(s2)))
-        | (Some(_), None) => raiseDriveMismatch(source, dest)
-        | (None, Some(_)) => raiseDriveMismatch(source, dest)
-        | (Some(d1), Some(d2)) =>
-          String.compare(d1, d2) !== 0
-            ? raiseDriveMismatch(source, dest)
-            : relativizeDepth((0, List.rev(s1)), (0, List.rev(s2)))
-        }
-      | ((Rel(w1, r1), s1), (Rel(w2, r2), s2)) =>
-        w1 === w2
-          ? relativizeDepth((r1, List.rev(s1)), (r2, List.rev(s2)))
-          : raiseDriveMismatch(source, dest)
-      };
-    (Rel(Any, depth), List.rev(segs));
-  };
-
-let relativize:
-  type k. (~source: t(k), ~dest: t(k)) => result(t(relative), exn) =
-  (~source, ~dest) =>
-    try(Ok(relativizeExn(~source, ~dest))) {
-    | Invalid_argument(_) as e => Error(e)
-    };
-
-let rec segEq = (l1, l2) =>
-  switch (l1, l2) {
-  | ([], []) => true
-  | ([], [_, ..._]) => false
-  | ([_, ..._], []) => false
-  | ([hd1, ...tl1], [hd2, ...tl2]) =>
-    String.compare(hd1, hd2) === 0 && segEq(tl1, tl2)
-  };
-
-let eq: type k1 k2. (t(k1), t(k2)) => bool =
-  (p1, p2) =>
-    switch (p1, p2) {
-    | ((Abs(_), s1), (Rel(_), s2)) => false
-    | ((Rel(_), s1), (Abs(_), s2)) => false
-    | ((Abs(d1), s1), (Abs(d2), s2)) =>
-      switch (d1, d2) {
-      | (Some(_), None)
-      | (None, Some(_)) => false
-      | (None, None) => segEq(s1, s2)
-      | (Some(d1), Some(d2)) =>
-        String.compare(d1, d2) === 0 && segEq(s1, s2)
-      }
-    | ((Rel(w1, r1), s1), (Rel(w2, r2), s2)) =>
-      w1 === w2 && r1 === r2 && segEq(s1, s2)
-    };
-
-let absoluteEq = eq;
-
-let relativeEq = eq;
-
-let testForPath = s =>
-  switch (absolute(s)) {
-  | Some(abs) => Some(Absolute(abs))
-  | None =>
-    switch (relative(s)) {
-    | Some(r) => Some(Relative(r))
-    | None => None
-    }
-  };
-
-let firstClass: type k. t(k) => firstClass =
-  p =>
-    switch (p) {
-    | (Abs(d), s) => Absolute((Abs(d), s))
-    | (Rel(w, r), s) => Relative((Rel(w, r), s))
-    };
-
-let testForPathExn = s =>
-  switch (testForPath(s)) {
-  | Some(res) => res
-  | None => raise(Invalid_argument("Path neither absolute nor relative."))
-  };
-
-let continue = (s, path) => List.fold_left(parseNextToken, path, lex(s));
-
-let rec join: type k1 k2. (t(k1), t(k2)) => t(k1) =
-  (p1, p2) =>
-    switch (p1, p2) {
-    | ((Rel(w, r1), []), (Rel(Any, r2), s2)) => (Rel(w, r1 + r2), s2)
-    | ((Rel(w, r1), [s1hd, ...s1tl] as s1), (Rel(Any, r2), s2)) =>
-      r2 > 0
-        ? join((Rel(w, r1), s1tl), (Rel(Any, r2 - 1), s2))
-        : (Rel(w, r1), List.append(s2, s1))
-    | ((b1, s1), (Rel(Home, r2), s2)) =>
-      join((b1, [homeChar, ...List.append(s2, s1)]), (Rel(Any, r2), s2))
-    | ((b1, s1), (Abs(Some(ll)), s2)) => (
-        b1,
-        [ll, ...List.append(s2, s1)],
-      )
-    | ((b1, s1), (Abs(None), s2)) => (b1, List.append(s2, s1))
-    | ((Abs(_) as d, []), (Rel(Any, r2), s2)) => (d, s2)
-    | ((Abs(_) as d, [s1hd, ...s1tl] as s1), (Rel(Any, r2), s2)) =>
-      r2 > 0
-        ? join((d, s1tl), (Rel(Any, r2 - 1), s2))
-        : (d, List.append(s2, s1))
-    };
-
-let dirName: type k1. t(k1) => t(k1) =
-  p1 =>
-    switch (p1) {
-    | (Rel(w, r1), []) => (Rel(w, r1 + 1), [])
-    | (Rel(w, r1), [s1hd, ...s1tl]) => (Rel(w, r1), s1tl)
-    | (Abs(_) as d, []) => (d, [])
-    | (Abs(_) as d, [s1hd, ...s1tl]) => (d, s1tl)
-    };
-
-let baseName: type k1. t(k1) => option(string) =
-  p1 =>
-    switch (p1) {
-    | (Rel(w, r1), []) => None
-    | (Rel(w, r1), [s1hd, ...s1tl]) => Some(s1hd)
-    | (Abs(_), []) => None
-    | (Abs(_), [s1hd, ...s1tl]) => Some(s1hd)
-    };
-
-let sub: type k1. (string, t(k1)) => t(k1) =
-  (name, path) => continue(name, path);
-
-/**
- * Append functions always follow their "natural" left/right ordering,
- * regardless of t-first/last.
- *
- * The following pairs are equivalent but note that `append` is always safe.
- *
- *     Path.append(Path.root, "foo");
- *     Option.getUnsafe(Path.absolute("/foo"));
- *
- *     Path.append(Path.root, "foo/bar");
- *     Option.getUnsafe(Path.absolute("/foo/bar"));
- *
- *     Path.append(Path.drive("C"), "foo/bar");
- *     Option.getUnsafe(Path.absolute("C:/foo/bar"));
- *
- *     Path.append(Path.dot, "foo");
- *     Option.getUnsafe(Path.relative("./foo"));
- */
-let append: type k1. (t(k1), string) => t(k1) =
-  (path, name) => continue(name, path);
-
-module At = {
-  let (/) = append;
-  /**
-   * Applies `dirName` to the first argument, then passes the result to
-   * `append` with the second.
-   *
-   *     let result = root / "foo" / "bar" /../ "baz";
-   *
-   * Would result in
-   *
-   *     "/foo/baz"
-   */
-  let (/../) = (dir, s) => append(dirName(dir), s);
-  let (/../../) = (dir, s) => append(dirName(dirName(dir)), s);
-  let (/../../../) = (dir, s) =>
-    append(dirName(dirName(dirName(dir))), s);
-  let (/../../../../) = (dir, s) =>
-    append(dirName(dirName(dirName(dirName(dir)))), s);
-  let (/../../../../../) = (dir, s) =>
-    append(dirName(dirName(dirName(dirName(dirName(dir))))), s);
-  let (/../../../../../../) = (dir, s) =>
-    append(
-      dirName(dirName(dirName(dirName(dirName(dirName(dir)))))),
-      s,
-    );
-};
diff --git a/library/Path.rei b/library/Path.rei
deleted file mode 100644
index 07a859c..0000000
--- a/library/Path.rei
+++ /dev/null
@@ -1,276 +0,0 @@
-/**
-
-`Path` is a library for creating and operating on file paths consistently on
-all platforms.
-
-`Path` works exactly the same on Windows, Linux, and OSX, instead of adjusting
-behavior based on your current OS
-
-The `Path` API uses the following conventions:
-
-- Accepts/returns only `t(absolute))` for values that must be absolute paths.
-- Accepts/returns only `t(relative))` for values that must be absolute paths.
-- Accepts `t('any)` for values that may be either absolute or relative paths.
-- Returns `firstClass = Absolute(t(absolute)) | Relative(t(relative)` for
-  return values that could be either. Consumers must pattern match on it.
-- Wraps return values in `Some(..)` / `None` when it is possible that no
-  value may be computed even when the caller supplies valid data.
-- Wraps return values in `Ok(..)` / `Error(exn)` when it is possible that no
-  value may be computed due to an error occuring in either user input or system
-  failure.
-- For every `functionName` that wraps return values in `Ok`/`Error`, an
-  alternative form `functionNameExn` is also supplied which does not wrap
-  the return value, and instead raises an exception.
-
-TODO: Consider the following universal convention instead:
-
-    type specificUsageError = UserNameInvalid | LoggedOut;
-    type blame('usage) = | Caller('usage) | Implementation(exn);
-    // Returns Error only for system blame:
-    result(x, exn)
-    // Returns Error for caller/system blame
-    result(x, blame(usage))
-    // Returns Error only for caller blame
-    result(x, usage)
-    // Returns Error for caller/system blame, but no value expected.
-    result(option(x), blame(usage))
-    // Returns Error for system blame, but no value expected.
-    result(option(x), exn)
-*/
-
-type relative;
-type absolute;
-/**
-A file system path, parameterized on the kind of file system path,
-`Path.t(relative)` or `Path.t(absolute)`.
-*/
-type t('kind);
-
-/**
-Used to allow dynamically checking whether or not a path is absolute or
-relative. Use seldomly.
-*/
-type firstClass =
-  | Absolute(t(absolute))
-  | Relative(t(relative));
-
-let drive: string => t(absolute);
-let root: t(absolute);
-let home: t(relative);
-let dot: t(relative);
-
-/**
-Queries whether a path is absolute or relative. Use seldomly, and typically
-only on end-user input. Once queried, use the wrapped `t(absolute)/t(relative)`
-as the primary path passed around.
-*/
-let testForPath: string => option(firstClass);
-
-/**
-Same as `testForPath`, but raises `Invalid_argument` if no path could be
-detected.
-*/
-let testForPathExn: string => firstClass;
-
-/**
-Creates a "first class" path could be _either_ a relative path or an absolute
-one.
-
-This allows you to return values from functions that might be absolute or might
-be relative. It also allows relative and absolute paths to coexist inside of a
-list together.
-For example, if you create a polymorphic function that accepts any kind of
-path, and then you want to do something differently based on whether or not the
-path is relative or absolute, you would first use `firstClass(path)` and then
-pattern match on the result `Absolute(p) => .. | Relative(p) => ...`.
-*/
-let firstClass: t('any) => firstClass;
-
-/**
- Prints absolute `Path.t` as strings, always removes the final `/` separator.
- */
-let toString: t(absolute) => string;
-
-/**
- Prints any `Path.t` for debugging, always removes the final `/` separator
- except in the case of the empty relative paths `./`, `~/`.
- */
-let toDebugString: t('kind) => string;
-
-/**
-Parses an absolute path into a `Path.t(absolute)` or returns `None` if the path
-is not a absolute, yet still valid. Raises Invalid_argument if the path is
-invalid.
- */
-let absolute: string => option(t(absolute));
-/**
- Parses a relative path into a `Path.t(relative)` or returns `None` if the path
- is not a valid.
- */
-let relative: string => option(t(relative));
-
-/**
- Same as `Path.absolute` but raises a Invalid_argument if argument is not a
- valid absolute path.
- */
-let absoluteExn: string => t(absolute);
-
-/**
- Same as `Path.relative` but raises a Invalid_argument if argument is not a
- valid relative path.
- */
-let relativeExn: string => t(relative);
-
-/**
-Creates a relative path from two paths, which is the relative path that is
-required to arive at the `dest`, if starting from `source` directory. The
-`source` and `dest` must both be `t(absolute)` or `t(relative)`, but the
-returned path is always of type `t(relative)`.
-
-If `source` and `dest` are relative, it is assumed that the two relative paths
-are relative to the same yet-to-be-specified absolute path.
-
-relativize(~source=/a, ~dest=/a)                == ./
-relativize(~source=/a/b/c/d /a/b/qqq            == ../c/d
-relativize(~source=/a/b/c/d, ~dest=/f/f/zzz)    == ../../../../f/f/zz
-relativize(~source=/a/b/c/d, ~dest=/a/b/c/d/q)  == ../q
-relativize(~source=./x/y/z, ~dest=./a/b/c)      == ../../a/b/c
-relativize(~source=./x/y/z, ~dest=../a/b/c)     == ../../../a/b/c
-
-Unsupported:
-`relativize` only accepts `source` and `dest` of the same kind of path because
-the following are meaningless:
-
-relativize(~source=/x/y/z, ~dest=./a/b/c) == ???
-relativize(~source=./x/y/z, ~dest=/a/b/c) == ???
-
-Exceptions:
-If it is impossible to create a relative path from `soure` to `dest` an
-exception is raised.
-If `source`/`dest` are absolute paths, the drive must match or an exception is
-thrown. If `source`/`dest` are relative paths, they both must be relative to
-`"~"` vs. `"."`. If both are relative, but the source has more `..` than the
-dest, then it is also impossible to create a relative path and an exception is
-raised.
-
-relativize(~source=./foo/bar, ~dest=~/foo/bar)       == raise(Invalid_argument)
-relativize(~source=~/foo/bar, ~dest=./foo/)          == raise(Invalid_argument)
-relativize(~source=C:/foo/bar, ~dest=/foo/bar)       == raise(Invalid_argument)
-relativize(~source=C:/foo/bar, ~dest=F:/foo/bar)     == raise(Invalid_argument)
-relativize(~source=/foo/bar, ~dest=C:/foo/)          == raise(Invalid_argument)
-relativize(~source=../x/y/z, ~dest=./a/b/c)          == raise(Invalid_argument)
-relativize(~source=../x/y/z, ~dest=../foo/../a/b/c)  == raise(Invalid_argument)
-*/
-let relativizeExn: (~source: t('kind), ~dest: t('kind)) => t(relative);
-/**
-Same as `relativizeExn` but returns `result(Path.t(Path.absolute), exn)`
-instead of throwing an exception.
-*/
-let relativize:
-  (~source: t('kind), ~dest: t('kind)) => result(t(relative), exn);
-
-/**
-Accepts any `Path.t` and returns a `Path.t` of the same kind.  Relative path
-inputs return relative path outputs, and absolute path inputs return absolute
-path outputs.
-*/
-let dirName: t('kind) => t('kind);
-
-/**
-Accepts any `Path.t` and returns the final segment in its path string, or
-`None` if there are no segments in its path string.
-
-   Path.baseName(Path.At(Path.dot /../ ""))
-   None
-
-   Path.baseName(Path.At(Path.dot /../ "foo"))
-   Some("foo")
-
-   Path.baseName(Path.At(Path.dot /../ "foo" /../ ""))
-   None
-
-   Path.baseName(Path.At(Path.dot /../ "foo" / "bar" /../ ""))
-   Some("foo")
-*/
-let baseName: t('kind) => option(string);
-
-/**
-Appends one segment to a path. Preserves the relative/absoluteness of the first
-arguments.
-*/
-let append: (t('kind), string) => t('kind);
-
-/**
-Appends one path to another. Preserves the relative/absoluteness of the first
-arguments.
-*/
-let join: (t('kind1), t('kind2)) => t('kind1);
-
-let eq: (t('kind1), t('kind2)) => bool;
-
-/**
-Tests for path equality of two absolute paths.
-*/
-let absoluteEq: (t(absolute), t(absolute)) => bool;
-
-/**
-Tests for path equality of two absolute paths.
-*/
-let relativeEq: (t(relative), t(relative)) => bool;
-
-/**
-Tests whether or not an absolute path has a parent path. Absolute paths such as
-"C:/" and "/" have no parent dir.
-*/
-let hasParentDir: t(absolute) => bool;
-
-/**
-Returns `true` if a path exists inside another path `~ofPath` or is equal to
-`~ofPath`.
-*/
-let isDescendent: (~ofPath: t('kind), t('kind)) => bool;
-
-/**
-Syntactic forms for utilities provided above. These are included in a separate
-module so that it can be opened safely without causing collisions with other
-identifiers in scope such as "root"/"home".
-
-Use like this:
-
-    Path.At(Path.root / "foo" / "bar");
-    Path.At(Path.dot /../ "bar");
-*/
-module At: {
-  /**
-   Performs `append` with infix syntax.
-   */
-  let (/): (t('kind), string) => t('kind);
-  /**
-   `dir /../ s` is equivalent to `append(dirName(dir), s)`
-   */
-  let (/../): (t('kind), string) => t('kind);
-  /**
-   `dir /../../ s` is equivalent to `append(dirName(dirName(dir)), s)`
-   */
-  let (/../../): (t('kind), string) => t('kind);
-  /**
-   `dir /../../../ s` is equivalent to
-   `append(dirName(dirName(dirName(dir))), s)`
-   */
-  let (/../../../): (t('kind), string) => t('kind);
-  /**
-   `dir /../../../../ s` is equivalent to
-   `append(dirName(dirName(dirName(dirName(dir)))), s)`
-   */
-  let (/../../../../): (t('kind), string) => t('kind);
-  /**
-   `dir /../../../../../ s` is equivalent to
-   `append(dirName(dirName(dirName(dirName(dirName(dir))))), s)`
-   */
-  let (/../../../../../): (t('kind), string) => t('kind);
-  /**
-   `dir /../../../../../../ s` is equivalent to
-   `append(dirName(dirName(dirName(dirName(dirName(dirName(dir)))))), s)`
-   */
-  let (/../../../../../../): (t('kind), string) => t('kind);
-};
\ No newline at end of file
diff --git a/library/Result.re b/library/Result.re
deleted file mode 100644
index fb20225..0000000
--- a/library/Result.re
+++ /dev/null
@@ -1,61 +0,0 @@
-let return = x => Ok(x);
-
-let both = (a, b) =>
-  switch (a, b) {
-  | (Error(_) as e, _)
-  | (_, Error(_) as e) => e
-  | (Ok(ax), Ok(bx)) => Ok((ax, bx))
-  };
-
-let mapError = (fn, res) =>
-  switch (res) {
-  | Error(x) => Error(fn(x))
-  | Ok(_) as x => x
-  };
-
-let map = (fn, res) =>
-  switch (res) {
-  | Ok(x) => Ok(fn(x))
-  | Error(_) as e => e
-  };
-
-let bind = (fn, res) =>
-  switch (res) {
-  | Ok(x) => fn(x)
-  | Error(_) as e => e
-  };
-
-let bind_err = (fn, res) =>
-  switch (res) {
-  | Ok(_) as o => o
-  | Error(x) => fn(x)
-  };
-
-let bind_err_lwt = (fn, res) =>
-  switch (res) {
-  | Ok(o) => Lwt.return_ok(o)
-  | Error(x) => fn(x)
-  };
-
-let fold = (error, ok, res) =>
-  switch (res) {
-  | Ok(x) => ok(x)
-  | Error(x) => error(x)
-  };
-
-module Let_syntax = {
-  let map = (x, ~f) => map(f, x);
-  let bind = (x, ~f) => bind(f, x);
-};
-
-let toLwt = res =>
-  switch (res) {
-  | Error(x) => Lwt.fail_with(x)
-  | Ok(x) => Lwt.return(x)
-  };
-
-let toLwtErr = res =>
-  switch (res) {
-  | Error(x) => Lwt.fail(x)
-  | Ok(x) => Lwt.return(x)
-  };
diff --git a/library/Semver.re b/library/Semver.re
deleted file mode 100644
index c159d31..0000000
--- a/library/Semver.re
+++ /dev/null
@@ -1,23 +0,0 @@
-[@deriving (eq, ord, make)]
-type t = {
-  major: int,
-  minor: int,
-  patch: int,
-};
-
-let fromString = str =>
-  switch (
-    String.split_on_char('.', str)
-    |> List.map(int_of_string_opt)
-    |> Base.Option.all
-  ) {
-  | Some([major, minor, patch]) => Some({major, minor, patch})
-  | _ => None
-  };
-
-let toString = ({major, minor, patch}) =>
-  Printf.sprintf("%d.%d.%d", major, minor, patch);
-
-let major = ({major, _}) => major;
-let minor = ({minor, _}) => minor;
-let patch = ({patch, _}) => patch;
diff --git a/library/Semver.rei b/library/Semver.rei
deleted file mode 100644
index 31a5858..0000000
--- a/library/Semver.rei
+++ /dev/null
@@ -1,11 +0,0 @@
-[@deriving (eq, ord)]
-type t;
-
-let make: (~major: int, ~minor: int, ~patch: int) => t;
-
-let fromString: string => option(t);
-let toString: t => string;
-
-let major: t => int;
-let minor: t => int;
-let patch: t => int;
diff --git a/library/System.re b/library/System.re
deleted file mode 100644
index b65d360..0000000
--- a/library/System.re
+++ /dev/null
@@ -1,109 +0,0 @@
-let unix_exec =
-    (~args=[||], ~env=?, ~stderr: Lwt_process.redirection=`Keep, command) => {
-  let realArgs = Array.append([|command|], args);
-  Lwt_process.pread_lines(~stderr, ~env?, ("", realArgs))
-  |> Lwt_stream.to_list;
-};
-
-let mkdirp = destination =>
-  unix_exec("mkdir", ~stderr=`Dev_null, ~args=[|"-p", destination|]);
-
-module Shell = {
-  type t =
-    | Bash
-    | Zsh
-    | Fish;
-
-  let infer = () => {
-    let processInfo = pid => {
-      switch%lwt (unix_exec("ps", ~args=[|"-o", "ppid,comm", pid|])) {
-      | [] => Lwt.return_none
-      | [_headers, line, ..._otherLines] =>
-        let psResult = String.split_on_char(' ', line |> String.trim);
-        let parentPid = List.nth(psResult, 0);
-        let executable = List.nth(psResult, 1) |> Filename.basename;
-        Lwt.return_some((parentPid, executable));
-      | [_, ..._] => Lwt.return_none
-      };
-    };
-
-    let rec getShell = (~level=0, pid) => {
-      switch%lwt (processInfo(pid)) {
-      | Some((_, "sh"))
-      | Some((_, "-sh"))
-      | Some((_, "-bash"))
-      | Some((_, "bash")) => Lwt.return_some(Bash)
-      | Some((_, "-zsh"))
-      | Some((_, "zsh")) => Lwt.return_some(Zsh)
-      | Some((_, "fish"))
-      | Some((_, "-fish")) => Lwt.return_some(Fish)
-      | Some((ppid, _)) when level < 10 => getShell(~level=level + 1, ppid)
-      | Some(_)
-      | None => Lwt.return_none
-      };
-    };
-
-    getShell(Unix.getpid() |> string_of_int);
-  };
-};
-
-module NodeArch = {
-  type t =
-    | X32
-    | X64
-    | Other;
-
-  let rec last = xs =>
-    switch (xs) {
-    | [x] => Some(x)
-    | [_, ...xs] => last(xs)
-    | [] => None
-    };
-
-  let findArches = unameResult => {
-    let words = unameResult |> List.hd |> String.split_on_char(' ');
-    List.exists(word => word == "x86_64", words) ? X64 : X32;
-  };
-
-  /* Get node-compliant architecture (x64, x86) */
-  let get = () =>
-    switch (Sys.os_type) {
-    | "Unix" =>
-      let%lwt result = unix_exec("uname", ~args=[|"-a"|]);
-      try(result |> findArches |> Lwt.return) {
-      | _ => Lwt.fail_with("Error getting unix information")
-      };
-    | _ => Lwt.return(Other)
-    };
-
-  let toString =
-    fun
-    | X64 => "x64"
-    | X32 => "x32"
-    | Other => "other";
-};
-
-module NodeOS = {
-  type t =
-    | Darwin
-    | Linux
-    | Other(string);
-
-  let get = () =>
-    switch (Sys.os_type) {
-    | "Unix" =>
-      let%lwt result = unix_exec("uname", ~args=[|"-s"|]);
-      switch (result |> List.hd) {
-      | "Darwin" => Lwt.return(Darwin)
-      | _ => Lwt.return(Linux)
-      | exception _ => Lwt.fail_with("Error getting unix information")
-      };
-    | other => Other(other) |> Lwt.return
-    };
-
-  let toString =
-    fun
-    | Darwin => "darwin"
-    | Linux => "linux"
-    | Other(_) => "other";
-};
diff --git a/library/VersionListing.re b/library/VersionListing.re
deleted file mode 100644
index 2d4920a..0000000
--- a/library/VersionListing.re
+++ /dev/null
@@ -1,34 +0,0 @@
-type item = {
-  version: string,
-  date: string,
-  files: list(string),
-  lts: option(string),
-};
-
-let item_of_yojson = (json: Yojson.Safe.t) => {
-  open Yojson.Safe.Util;
-  let version = json |> member("version") |> to_string;
-  let files = json |> member("files") |> to_list |> List.map(to_string);
-  let date = json |> member("date") |> to_string;
-  let lts =
-    Base.Option.try_with(() =>
-      json |> member("lts") |> to_string |> String.lowercase_ascii
-    );
-  Ok({version, date, files, lts});
-};
-
-[@deriving of_yojson({strict: false})]
-type t = list(item);
-
-let parseVersionListing = body => {
-  Base.Result.try_with(() => Yojson.Safe.from_string(body))
-  |> Base.Result.map_error(~f=Printexc.to_string)
-  |> Base.Result.bind(~f=x => of_yojson(x));
-};
-
-let fromHttp = () => {
-  let url =
-    Config.FNM_NODE_DIST_MIRROR.get() |> Printf.sprintf("%s/index.json");
-  let%lwt {Http.body, _} = Http.makeRequest(url);
-  parseVersionListing(body) |> Lwt.return;
-};
diff --git a/library/VersionListingLts.re b/library/VersionListingLts.re
deleted file mode 100644
index 403745c..0000000
--- a/library/VersionListingLts.re
+++ /dev/null
@@ -1,29 +0,0 @@
-type item = {
-  version: string,
-  lts: string,
-};
-
-let item_to_lts = (item: VersionListing.item) => {
-  item.lts |> Base.Option.map(~f=lts => {lts, version: item.version});
-};
-
-type get_latest_lts_errors =
-  | Cant_parse_remote_version_listing(string)
-  | Cant_find_latest_lts;
-
-exception Problem_with_finding_latest_lts(get_latest_lts_errors);
-
-let getLatest = () => {
-  let%lwt versions = VersionListing.fromHttp();
-  versions
-  |> Base.Result.map_error(~f=err => Cant_parse_remote_version_listing(err))
-  |> Base.Result.bind(~f=parsed =>
-       parsed
-       |> Base.List.filter_map(~f=item_to_lts)
-       |> Base.List.max_elt(~compare=(a, b) =>
-            Versions.compare(a.version, b.version)
-          )
-       |> Base.Result.of_option(~error=Cant_find_latest_lts)
-     )
-  |> Lwt.return;
-};
diff --git a/library/Versions.re b/library/Versions.re
deleted file mode 100644
index 912304a..0000000
--- a/library/Versions.re
+++ /dev/null
@@ -1,372 +0,0 @@
-module VersionSet = Set.Make(String);
-
-let lwtIgnore = lwt => Lwt.catch(() => lwt, _ => Lwt.return());
-
-let flip = (fn, a, b) => fn(b, a);
-
-let skip = (~amount, str) =>
-  Str.last_chars(str, String.length(str) - amount);
-
-let parseSemver = version => version |> skip(~amount=1) |> Semver.fromString;
-
-let compare = (v1, v2) =>
-  switch (parseSemver(v1), parseSemver(v2)) {
-  | (Some(v1), Some(v2)) => Semver.compare(v1, v2)
-  | (None, _)
-  | (_, None) => - Base.String.compare(v1, v2)
-  };
-
-let isVersionFitsPrefix = (prefix, version) => {
-  let length = String.length(prefix);
-  String.length(version) >= length
-  + 1
-  && Str.first_chars(version, length + 1) == prefix
-  ++ ".";
-};
-
-module Local = {
-  type t = {
-    name: string,
-    fullPath: string,
-    aliases: list(string),
-  };
-
-  let systemVersion: t = {
-    name: "system",
-    fullPath: "/dev/null/installation",
-    aliases: [],
-  };
-
-  let toDirectory = name =>
-    Filename.concat(
-      Filename.concat(Directories.nodeVersions, name),
-      "installation",
-    );
-
-  let remove = version => Fs.rmdir(version.fullPath);
-
-  let getLatestInstalledNameByPrefix = prefix =>
-    Lwt.Infix.(
-      {
-        let%lwt versions =
-          Lwt.catch(
-            () =>
-              Fs.readdir(Directories.nodeVersions)
-              >|= List.filter(isVersionFitsPrefix(prefix))
-              >|= List.sort(flip(compare)),
-            _ => Lwt.return_nil,
-          );
-        switch (versions) {
-        | [version, ..._xs] => Lwt.return_some(version)
-        | [] => Lwt.return_none
-        };
-      }
-    );
-};
-
-exception Version_not_found(string);
-
-module Aliases = {
-  module VersionAliasMap = Map.Make(String);
-
-  type t = {
-    name: string,
-    versionName: string,
-    fullPath: string,
-  };
-
-  let toDirectory = name => Filename.concat(Directories.aliases, name);
-
-  let getAll = () => {
-    let%lwt aliases =
-      try%lwt(Fs.readdir(Directories.aliases)) {
-      | _ => Lwt.return([])
-      };
-    aliases
-    |> Lwt_list.map_p(alias => {
-         let fullPath = Filename.concat(Directories.aliases, alias);
-         let%lwt realpath =
-           Filename.concat(Directories.aliases, alias)
-           |> Fs.realpath
-           |> Lwt.map(
-                fun
-                | Fs.Exists(x) => x
-                | Fs.Missing(x) => x,
-              );
-
-         Lwt.return({
-           name: alias,
-           fullPath,
-           versionName: realpath |> Filename.dirname |> Filename.basename,
-         });
-       });
-  };
-
-  let byVersion = () => {
-    let%lwt aliases = getAll();
-    aliases
-    |> List.fold_left(
-         (map, curr) => {
-           let value =
-             switch (VersionAliasMap.find_opt(curr.versionName, map)) {
-             | None => [curr.name]
-             | Some(arr) => [curr.name, ...arr]
-             };
-           VersionAliasMap.add(curr.versionName, value, map);
-         },
-         VersionAliasMap.empty,
-       )
-    |> Lwt.return;
-  };
-
-  let set = (~alias, ~versionPath) => {
-    let aliasPath = alias |> toDirectory;
-    let%lwt _ = System.mkdirp(Directories.aliases);
-    let%lwt _ = Lwt_unix.unlink(aliasPath) |> lwtIgnore;
-    let%lwt _ = Lwt_unix.symlink(versionPath, aliasPath);
-    Lwt.return();
-  };
-};
-
-module Remote = {
-  type t = {
-    name: string,
-    baseURL: string,
-    installed: bool,
-  };
-
-  let getInstalledVersionSet = () =>
-    Lwt.(
-      catch(() => Fs.readdir(Directories.nodeVersions), _ => return([]))
-      >|= List.fold_left(
-            (acc, curr) => VersionSet.add(curr, acc),
-            VersionSet.empty,
-          )
-    );
-
-  let getRelativeLinksFromHTML = html =>
-    Soup.parse(html)
-    |> Soup.select("pre a")
-    |> Soup.to_list
-    |> List.map(Soup.attribute("href"))
-    |> Base.List.filter_map(~f=x => x)
-    |> List.map(x => {
-         let parts = String.split_on_char('/', x) |> List.rev;
-         switch (parts) {
-         | ["", x, ..._xs] => x ++ "/"
-         | [x, ..._xs] => x
-         | [] => ""
-         };
-       });
-
-  let downloadFileSuffix = ".tar.xz";
-
-  let getVersionFromFilename = filename => {
-    let strings = filename |> String.split_on_char('-');
-    List.nth(strings, 1);
-  };
-};
-
-let ltsVersion = version =>
-  if (Base.String.is_prefix(version, ~prefix="lts/")) {
-    switch (Str.last_chars(version, String.length(version) - 4)) {
-    | exception _ => None
-    | x => Some(x)
-    };
-  } else {
-    None;
-  };
-
-let format = version => {
-  let version =
-    switch (Str.first_chars(version, 1) |> Int32.of_string) {
-    | _ => "v" ++ version
-    | exception _ => version
-    };
-
-  let version =
-    switch (ltsVersion(version)) {
-    | Some(lts) => "latest-" ++ lts
-    | None => version
-    };
-
-  version;
-};
-
-let endsWith = (~suffix, str) => {
-  let suffixLength = String.length(suffix);
-
-  String.length(str) > suffixLength
-  && Str.last_chars(str, suffixLength) == suffix;
-};
-
-exception No_Download_For_System(System.NodeOS.t, System.NodeArch.t);
-
-let getCurrentVersion = () =>
-  switch%lwt (Fs.realpath(Directories.currentVersion)) {
-  | Missing(x) when x == Directories.currentVersion => Lwt.return_none
-  | Missing(_) => Lwt.return_some(Local.systemVersion)
-  | Exists(installationPath) =>
-    let fullPath = Filename.dirname(installationPath);
-    Lwt.return_some(
-      Local.{
-        fullPath,
-        name:
-          fullPath
-          |> Path.absolute
-          |> Base.Option.bind(~f=Path.baseName)
-          |> Base.Option.value(~default=""),
-        aliases: [],
-      },
-    );
-  };
-
-let getInstalledVersions = () => {
-  let%lwt versions =
-    Fs.readdir(Directories.nodeVersions) |> Lwt.map(List.sort(compare))
-  and aliases = Aliases.byVersion();
-
-  versions
-  |> List.map(name =>
-       Local.{
-         name,
-         fullPath: Filename.concat(Directories.nodeVersions, name),
-         aliases: Opt.(Aliases.VersionAliasMap.find_opt(name, aliases) or []),
-       }
-     )
-  |> List.append([Local.systemVersion])
-  |> Lwt.return;
-};
-
-let getRemoteVersions = () => {
-  let%lwt bodyString =
-    Config.FNM_NODE_DIST_MIRROR.get()
-    |> Http.makeRequest
-    |> Lwt.map(Http.body);
-
-  let versions = bodyString |> Remote.getRelativeLinksFromHTML;
-  let%lwt installedVersions = Remote.getInstalledVersionSet();
-
-  versions
-  |> List.filter(x =>
-       Str.last_chars(x, 1) == "/" && Str.first_chars(x, 1) != "."
-     )
-  |> List.map(x => Str.first_chars(x, String.length(x) - 1))
-  |> List.sort(compare)
-  |> List.map(name =>
-       Remote.{
-         name,
-         installed: VersionSet.find_opt(name, installedVersions) != None,
-         baseURL:
-           Printf.sprintf("%s%s/", Config.FNM_NODE_DIST_MIRROR.get(), name),
-       }
-     )
-  |> Lwt.return;
-};
-
-let getRemoteLatestVersionByPrefix = prefix =>
-  Remote.(
-    {
-      let%lwt remoteVersions = getRemoteVersions();
-
-      let compatibleVersions =
-        remoteVersions
-        |> List.map(x => x.name)
-        |> List.filter(isVersionFitsPrefix(prefix))
-        |> List.sort(flip(compare));
-
-      switch (compatibleVersions) {
-      | [version, ..._vs] => Lwt.return_some(version)
-      | [] => Lwt.return_none
-      };
-    }
-  );
-
-let getExactFileToDownload = (~version as versionName, ~os, ~arch) => {
-  let versionName =
-    switch (Str.first_chars(versionName, 1) |> Int32.of_string) {
-    | _ => "v" ++ versionName
-    | exception _ => versionName
-    };
-
-  let url =
-    Printf.sprintf("%s%s/", Config.FNM_NODE_DIST_MIRROR.get(), versionName);
-
-  let%lwt html =
-    try%lwt(Http.makeRequest(url) |> Lwt.map(Http.body)) {
-    | Http.Not_found(_) => Lwt.fail(Version_not_found(versionName))
-    };
-
-  let filenames =
-    html
-    |> Remote.getRelativeLinksFromHTML
-    |> List.filter(
-         endsWith(
-           ~suffix=
-             System.NodeOS.toString(os)
-             ++ "-"
-             ++ System.NodeArch.toString(arch)
-             ++ Remote.downloadFileSuffix,
-         ),
-       );
-
-  switch (filenames |> List.hd) {
-  | filename =>
-    let nodeVersion = List.nth(String.split_on_char('-', filename), 1);
-    Lwt.return((nodeVersion, url ++ filename));
-  | exception _ => Lwt.fail(No_Download_For_System(os, arch))
-  };
-};
-
-let getFileToDownload = (~version, ~os, ~arch) =>
-  try%lwt(getExactFileToDownload(~version, ~os, ~arch)) {
-  | Version_not_found(_) as e =>
-    switch%lwt (getRemoteLatestVersionByPrefix(version)) {
-    | None => Lwt.fail(e)
-    | Some(exactVersion) =>
-      getExactFileToDownload(~version=exactVersion, ~os, ~arch)
-    }
-  };
-
-type t =
-  | System
-  | Alias(string)
-  | Local(string);
-
-let parse = version => {
-  let formattedVersion = format(version);
-
-  if (formattedVersion == Local.systemVersion.name) {
-    Lwt.return_ok(System);
-  } else {
-    let%lwt aliasExists = Aliases.toDirectory(version) |> Fs.exists
-    and aliasExistsOnFormatted =
-      Aliases.toDirectory(formattedVersion) |> Fs.exists
-    and versionExists = Local.toDirectory(formattedVersion) |> Fs.exists
-    and versionByPrefixPath =
-      Local.getLatestInstalledNameByPrefix(formattedVersion);
-
-    switch (
-      versionExists,
-      aliasExists,
-      aliasExistsOnFormatted,
-      versionByPrefixPath,
-    ) {
-    | (true, _, _, _) => Local(formattedVersion) |> Lwt.return_ok
-    | (_, true, _, _) => Alias(version) |> Lwt.return_ok
-    | (_, _, true, _) => Alias(formattedVersion) |> Lwt.return_ok
-    | (_, false, false, Some(version)) => Local(version) |> Lwt.return_ok
-    | (false, false, false, None) => Lwt.return_error(formattedVersion)
-    };
-  };
-};
-
-let isInstalled = versionName => {
-  let%lwt installedVersions =
-    try%lwt(getInstalledVersions()) {
-    | _ => Lwt.return([])
-    };
-  installedVersions
-  |> List.exists(x => Local.(x.name == versionName))
-  |> Lwt.return;
-};
diff --git a/library/dune b/library/dune
deleted file mode 100644
index 893a5d3..0000000
--- a/library/dune
+++ /dev/null
@@ -1,12 +0,0 @@
-
-; !!!! This dune file is generated from the package.json file by pesy. If you modify it by hand
-; !!!! your changes will be undone! Instead, edit the package.json and then rerun 'esy pesy' at the project root.
-; !!!! If you want to stop using pesy and manage this file by hand, change package.json's 'esy.build' command to: refmterr dune build -p  fnm
-(library
-   ; The namespace that other packages/libraries will access this library through
-   (name Fnm)
-   ; Other libraries list this name in their package.json 'require' field to use this library.
-   (public_name fnm.lib)
-   (libraries  pastel.lib str base lwt tls lambdasoup cohttp cohttp-lwt cohttp-lwt-unix console.lib ppx_deriving_yojson.runtime )
-   (preprocess ( pps lwt_ppx ppx_let ppx_deriving.show ppx_deriving.eq ppx_deriving.make ppx_deriving.ord ppx_deriving_yojson ))  ; From package.json preprocess field
-)
\ No newline at end of file
diff --git a/package.json b/package.json
deleted file mode 100644
index 09ee838..0000000
--- a/package.json
+++ /dev/null
@@ -1,142 +0,0 @@
-{
-  "name": "fnm",
-  "version": "1.21.0",
-  "description": "Fast and simple Node.js version manager, built in ReasonML",
-  "esy": {
-    "build": "pesy",
-    "release": {
-      "releasedBinaries": [
-        "fnm.exe"
-      ]
-    }
-  },
-  "buildDirs": {
-    "test": {
-      "require": [
-        "fnm.lib",
-        "rely.lib"
-      ],
-      "main": "TestFnm",
-      "name": "TestFnm.exe",
-      "ocamloptFlags": [
-        "-linkall",
-        "-g"
-      ]
-    },
-    "library": {
-      "preprocess": [
-        "pps",
-        "lwt_ppx",
-        "ppx_let",
-        "ppx_deriving.show",
-        "ppx_deriving.eq",
-        "ppx_deriving.make",
-        "ppx_deriving.ord",
-        "ppx_deriving_yojson"
-      ],
-      "require": [
-        "pastel.lib",
-        "str",
-        "base",
-        "lwt",
-        "tls",
-        "lambdasoup",
-        "cohttp",
-        "cohttp-lwt",
-        "cohttp-lwt-unix",
-        "console.lib",
-        "ppx_deriving_yojson.runtime"
-      ],
-      "name": "fnm.lib",
-      "namespace": "Fnm"
-    },
-    "executable": {
-      "preprocess": [
-        "pps",
-        "lwt_ppx",
-        "ppx_let"
-      ],
-      "require": [
-        "base",
-        "cmdliner",
-        "lwt",
-        "lambdasoup",
-        "console.lib",
-        "pastel.lib",
-        "fnm.lib"
-      ],
-      "flags": [
-        "-ccopt",
-        "-lgmp"
-      ],
-      "main": "FnmApp",
-      "name": "fnm.exe"
-    }
-  },
-  "scripts": {
-    "pesy": "bash -c 'env PESY_MODE=update pesy'",
-    "update-fnm-package": "node ./.ci/prepare-fnm-package.js",
-    "verify-fnm-package": "node ./.ci/prepare-fnm-package.js --fail-on-difference",
-    "bootstrap": ".ci/bootstrap",
-    "test": "esy x TestFnm.exe",
-    "fmt": "bash -c 'esy @fmt refmt --in-place ./*/*.re'",
-    "changelog": "bash -c 'esy lerna-changelog --from=v1.0.0 --next-version=${NEXT_VERSION-Unreleased} > CHANGELOG.md'",
-    "version:prepare": "node ./.ci/prepare-version.js"
-  },
-  "license": "GPL-3.0",
-  "dependencies": {
-    "@esy-ocaml/reason": "*",
-    "@opam/base": "v0.13.1",
-    "@opam/cmdliner": "^1.0.3",
-    "@opam/cohttp": "^2.1.2",
-    "@opam/cohttp-lwt": "^2.0.0",
-    "@opam/cohttp-lwt-unix": "^2.0.0",
-    "@opam/dune": "^1.9.3",
-    "@opam/lambdasoup": "^0.6.3",
-    "@opam/lwt": "< 6.0.0",
-    "@opam/lwt_ppx": "< 3.0.0",
-    "@opam/ppx_deriving": "^4.2.1",
-    "@opam/ppx_deriving_yojson": "3.5.1",
-    "@opam/ppx_let": "v0.13.0",
-    "@opam/tls": "0.10.5",
-    "@opam/yojson": "1.7.0",
-    "@reason-native/console": "^0.1.0",
-    "@reason-native/pastel": "^0.2.0",
-    "@reason-native/rely": "^3.2.0",
-    "ocaml": "~4.8.0",
-    "pesy": "*",
-    "refmterr": "*"
-  },
-  "devDependencies": {
-    "@opam/merlin": "*",
-    "prettier": "*",
-    "jest-diff": "24.0.0",
-    "lint-staged": "*",
-    "lerna-changelog": "*"
-  },
-  "resolutions": {
-    "@opam/conf-gmp": "Schniz/esy-gmp#b48f9d1d0cf9df2d939371819635cbe72b0c281c"
-  },
-  "changelog": {
-    "repo": "Schniz/fnm",
-    "labels": {
-      "PR: New Feature": "New Feature 🎉",
-      "PR: Bugfix": "Bugfix 🐛",
-      "PR: Internal": "Internal 🛠",
-      "PR: Documentation": "Documentation 📝"
-    }
-  },
-  "lint-staged": {
-    "*.re": [
-      "esy @fmt refmt --in-place",
-      "git add"
-    ],
-    "*.{js,md,json}": [
-      "esy prettier --write",
-      "git add"
-    ],
-    "package.json": [
-      "esy verify-fnm-package"
-    ]
-  }
-}
diff --git a/renovate.json b/renovate.json
new file mode 100644
index 0000000..f45d8f1
--- /dev/null
+++ b/renovate.json
@@ -0,0 +1,5 @@
+{
+  "extends": [
+    "config:base"
+  ]
+}
diff --git a/src/alias.rs b/src/alias.rs
new file mode 100644
index 0000000..4233b03
--- /dev/null
+++ b/src/alias.rs
@@ -0,0 +1,73 @@
+use crate::config::FnmConfig;
+use crate::fs::{remove_symlink_dir, symlink_dir};
+use crate::version::Version;
+use std::convert::TryInto;
+use std::path::PathBuf;
+
+pub fn create_alias(
+    config: &FnmConfig,
+    common_name: &str,
+    version: &Version,
+) -> std::io::Result<()> {
+    let aliases_dir = config.aliases_dir();
+    std::fs::create_dir_all(&aliases_dir)?;
+
+    let version_dir = version
+        .installation_path(config)
+        .ok_or_else(|| std::io::Error::from(std::io::ErrorKind::NotFound))?;
+    let alias_dir = aliases_dir.join(common_name);
+
+    if alias_dir.exists() {
+        remove_symlink_dir(&alias_dir)?;
+    }
+
+    symlink_dir(&version_dir, &alias_dir)?;
+
+    Ok(())
+}
+
+pub fn list_aliases(config: &FnmConfig) -> std::io::Result<Vec<StoredAlias>> {
+    let vec: Vec<_> = std::fs::read_dir(&config.aliases_dir())?
+        .filter_map(|item| item.ok())
+        .filter_map(|x| TryInto::<StoredAlias>::try_into(x.path().as_path()).ok())
+        .collect();
+    Ok(vec)
+}
+
+#[derive(Debug)]
+pub struct StoredAlias {
+    alias_path: PathBuf,
+    destination_path: PathBuf,
+}
+
+impl std::convert::TryInto<StoredAlias> for &std::path::Path {
+    type Error = std::io::Error;
+
+    fn try_into(self) -> Result<StoredAlias, Self::Error> {
+        let destination_path = std::fs::canonicalize(&self)?;
+        Ok(StoredAlias {
+            alias_path: PathBuf::from(self),
+            destination_path,
+        })
+    }
+}
+
+impl StoredAlias {
+    pub fn s_ver(&self) -> &str {
+        self.destination_path
+            .parent()
+            .unwrap()
+            .file_name()
+            .expect("must have basename")
+            .to_str()
+            .unwrap()
+    }
+
+    pub fn name(&self) -> &str {
+        self.alias_path
+            .file_name()
+            .expect("must have basename")
+            .to_str()
+            .unwrap()
+    }
+}
diff --git a/src/archive/extract.rs b/src/archive/extract.rs
new file mode 100644
index 0000000..52016ea
--- /dev/null
+++ b/src/archive/extract.rs
@@ -0,0 +1,43 @@
+use std::error::Error as StdError;
+use std::path::Path;
+
+#[derive(Debug)]
+pub enum Error {
+    IoError(std::io::Error),
+    ZipError(zip::result::ZipError),
+    HttpError(reqwest::Error),
+}
+
+impl std::fmt::Display for Error {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::IoError(x) => x.fmt(f),
+            Self::ZipError(x) => x.fmt(f),
+            Self::HttpError(x) => x.fmt(f),
+        }
+    }
+}
+
+impl StdError for Error {}
+
+impl From<std::io::Error> for Error {
+    fn from(err: std::io::Error) -> Self {
+        Self::IoError(err)
+    }
+}
+
+impl From<zip::result::ZipError> for Error {
+    fn from(err: zip::result::ZipError) -> Self {
+        Self::ZipError(err)
+    }
+}
+
+impl From<reqwest::Error> for Error {
+    fn from(err: reqwest::Error) -> Self {
+        Self::HttpError(err)
+    }
+}
+
+pub trait Extract {
+    fn extract_into<P: AsRef<Path>>(self, path: P) -> Result<(), Error>;
+}
diff --git a/src/archive/mod.rs b/src/archive/mod.rs
new file mode 100644
index 0000000..e3cf33f
--- /dev/null
+++ b/src/archive/mod.rs
@@ -0,0 +1,7 @@
+pub mod extract;
+pub mod tar_xz;
+pub mod zip;
+
+pub use self::extract::{Error, Extract};
+pub use self::tar_xz::TarXz;
+pub use self::zip::Zip;
diff --git a/src/archive/tar_xz.rs b/src/archive/tar_xz.rs
new file mode 100644
index 0000000..6b581b0
--- /dev/null
+++ b/src/archive/tar_xz.rs
@@ -0,0 +1,23 @@
+use super::extract::{Error, Extract};
+use reqwest::blocking::Response;
+use std::path::Path;
+
+pub struct TarXz {
+    response: Response,
+}
+
+impl TarXz {
+    #[allow(dead_code)]
+    pub fn new(response: Response) -> Self {
+        Self { response }
+    }
+}
+
+impl Extract for TarXz {
+    fn extract_into<P: AsRef<Path>>(self, path: P) -> Result<(), Error> {
+        let xz_stream = xz2::read::XzDecoder::new(self.response);
+        let mut tar_archive = tar::Archive::new(xz_stream);
+        tar_archive.unpack(&path)?;
+        Ok(())
+    }
+}
diff --git a/src/archive/zip.rs b/src/archive/zip.rs
new file mode 100644
index 0000000..237ca11
--- /dev/null
+++ b/src/archive/zip.rs
@@ -0,0 +1,103 @@
+use super::extract::{Error, Extract};
+use log::debug;
+use reqwest::blocking::Response;
+use std::fs;
+use std::io;
+use std::path::Path;
+use tempfile::tempfile;
+use zip::read::ZipArchive;
+
+pub struct Zip {
+    response: Response,
+}
+
+impl Zip {
+    #[allow(dead_code)]
+    pub fn new(response: Response) -> Self {
+        Self { response }
+    }
+}
+
+impl Extract for Zip {
+    fn extract_into<P: AsRef<Path>>(mut self, path: P) -> Result<(), Error> {
+        let path = path.as_ref();
+        let mut tmp_zip_file = tempfile().expect("Can't get a temporary file");
+
+        debug!("Created a temporary zip file");
+        self.response.copy_to(&mut tmp_zip_file)?;
+        debug!(
+            "Wrote zipfile successfuly. Now extracting into {}.",
+            path.display()
+        );
+
+        let mut archive = ZipArchive::new(&mut tmp_zip_file)?;
+
+        for i in 0..archive.len() {
+            let mut file = archive.by_index(i)?;
+            let outpath = path.join(file.sanitized_name());
+
+            {
+                let comment = file.comment();
+                if !comment.is_empty() {
+                    debug!("File {} comment: {}", i, comment);
+                }
+            }
+
+            if (&*file.name()).ends_with('/') {
+                debug!(
+                    "File {} extracted to \"{}\"",
+                    i,
+                    outpath.as_path().display()
+                );
+                fs::create_dir_all(&outpath)?;
+            } else {
+                debug!(
+                    "Extracting file {} to \"{}\" ({} bytes)",
+                    i,
+                    outpath.as_path().display(),
+                    file.size()
+                );
+                if let Some(p) = outpath.parent() {
+                    if !p.exists() {
+                        fs::create_dir_all(&p)?;
+                    }
+                }
+                let mut outfile = fs::File::create(&outpath)?;
+                io::copy(&mut file, &mut outfile)?;
+            }
+
+            // Get and Set permissions
+            #[cfg(unix)]
+            {
+                use std::os::unix::fs::PermissionsExt;
+
+                if let Some(mode) = file.unix_mode() {
+                    fs::set_permissions(&outpath, fs::Permissions::from_mode(mode))?;
+                }
+            }
+        }
+
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test_env_log::test]
+    fn test_zip_extraction() {
+        let temp_dir = tempfile::tempdir().expect("Can't create a temp directory");
+        let response =
+            reqwest::blocking::get("https://nodejs.org/dist/v12.0.0/node-v12.0.0-win-x64.zip")
+                .expect("Can't make request to Node v12.0.0 zip file");
+        Zip::new(response)
+            .extract_into(&temp_dir)
+            .expect("Can't unzip files");
+        let node_file = temp_dir
+            .as_ref()
+            .join("node-v12.0.0-win-x64")
+            .join("node.exe");
+        assert!(node_file.exists());
+    }
+}
diff --git a/src/choose_version_for_user_input.rs b/src/choose_version_for_user_input.rs
new file mode 100644
index 0000000..066bc8b
--- /dev/null
+++ b/src/choose_version_for_user_input.rs
@@ -0,0 +1,77 @@
+use crate::config::FnmConfig;
+use crate::installed_versions;
+use crate::system_version;
+use crate::user_version::UserVersion;
+use crate::version::Version;
+use colored::Colorize;
+use log::info;
+use snafu::{ensure, ResultExt, Snafu};
+use std::path::{Path, PathBuf};
+
+pub struct ApplicableVersion {
+    path: PathBuf,
+    version: Version,
+}
+
+impl ApplicableVersion {
+    pub fn path(&self) -> &Path {
+        &self.path
+    }
+
+    pub fn version(&self) -> &Version {
+        &self.version
+    }
+}
+
+pub fn choose_version_for_user_input<'a>(
+    requested_version: &'a UserVersion,
+    config: &'a FnmConfig,
+) -> Result<Option<ApplicableVersion>, Error> {
+    let all_versions =
+        installed_versions::list(config.installations_dir()).context(VersionListing)?;
+
+    let result = if let UserVersion::Full(Version::Bypassed) = requested_version {
+        info!("Bypassing fnm: using {} node", "system".cyan());
+        Some(ApplicableVersion {
+            path: system_version::path(),
+            version: Version::Bypassed,
+        })
+    } else if let Some(alias_name) = requested_version.alias_name() {
+        let alias_path = config.aliases_dir().join(&alias_name);
+        ensure!(
+            alias_path.exists(),
+            CantFindVersion {
+                requested_version: requested_version.clone()
+            }
+        );
+        info!("Using Node for alias {}", alias_name.cyan());
+        Some(ApplicableVersion {
+            path: alias_path,
+            version: Version::Alias(alias_name),
+        })
+    } else {
+        let current_version = requested_version.to_version(&all_versions);
+        current_version.map(|version| {
+            info!("Using Node {}", version.to_string().cyan());
+            let path = config
+                .installations_dir()
+                .join(version.to_string())
+                .join("installation");
+
+            ApplicableVersion {
+                path,
+                version: version.clone(),
+            }
+        })
+    };
+
+    Ok(result)
+}
+
+#[derive(Debug, Snafu)]
+pub enum Error {
+    #[snafu(display("Can't find requested version: {}", requested_version))]
+    CantFindVersion { requested_version: UserVersion },
+    #[snafu(display("Can't list local installed versions: {}", source))]
+    VersionListing { source: installed_versions::Error },
+}
diff --git a/src/cli.rs b/src/cli.rs
new file mode 100644
index 0000000..9e2f884
--- /dev/null
+++ b/src/cli.rs
@@ -0,0 +1,61 @@
+use crate::commands;
+use crate::commands::command::Command;
+use crate::config::FnmConfig;
+use structopt::StructOpt;
+
+#[derive(StructOpt, Debug)]
+pub enum SubCommand {
+    #[structopt(name = "ls-remote", about = "List all remote Node.js versions")]
+    LsRemote(commands::ls_remote::LsRemote),
+    #[structopt(name = "ls", about = "List all local Node.js versions")]
+    LsLocal(commands::ls_local::LsLocal),
+    #[structopt(name = "install", about = "Install a new Node.js version")]
+    Install(commands::install::Install),
+    #[structopt(name = "use", about = "Change Node.js version")]
+    Use(commands::r#use::Use),
+    #[structopt(
+        name = "env",
+        about = "Print and setup required environment variables for fnm"
+    )]
+    Env(commands::env::Env),
+    #[structopt(name = "completions", about = "Create completions file")]
+    Completions(commands::completions::Completions),
+    #[structopt(name = "alias", about = "alias a version to a common name")]
+    Alias(commands::alias::Alias),
+    #[structopt(name = "default", about = "set a version as the default version")]
+    Default(commands::default::Default),
+    #[structopt(name = "current", about = "The current version")]
+    Current(commands::current::Current),
+    #[structopt(name = "exec", about = "Run a command with in fnm context")]
+    Exec(commands::exec::Exec),
+}
+
+impl SubCommand {
+    pub fn call(self, config: FnmConfig) {
+        match self {
+            Self::LsLocal(cmd) => cmd.call(config),
+            Self::LsRemote(cmd) => cmd.call(config),
+            Self::Install(cmd) => cmd.call(config),
+            Self::Env(cmd) => cmd.call(config),
+            Self::Use(cmd) => cmd.call(config),
+            Self::Completions(cmd) => cmd.call(config),
+            Self::Alias(cmd) => cmd.call(config),
+            Self::Default(cmd) => cmd.call(config),
+            Self::Current(cmd) => cmd.call(config),
+            Self::Exec(cmd) => cmd.call(config),
+        }
+    }
+}
+
+#[derive(StructOpt, Debug)]
+#[structopt(name = "fnm")]
+pub struct Cli {
+    #[structopt(flatten)]
+    pub config: FnmConfig,
+    #[structopt(subcommand)]
+    pub subcmd: SubCommand,
+}
+
+pub fn parse() -> Cli {
+    Cli::from_args()
+}
diff --git a/src/commands/alias.rs b/src/commands/alias.rs
new file mode 100644
index 0000000..506ef88
--- /dev/null
+++ b/src/commands/alias.rs
@@ -0,0 +1,45 @@
+use super::command::Command;
+use crate::alias::create_alias;
+use crate::choose_version_for_user_input::{
+    choose_version_for_user_input, Error as ApplicableVersionError,
+};
+use crate::config::FnmConfig;
+use crate::installed_versions;
+use crate::user_version::UserVersion;
+use snafu::{OptionExt, ResultExt, Snafu};
+use structopt::StructOpt;
+
+#[derive(StructOpt, Debug)]
+pub struct Alias {
+    pub(crate) to_version: UserVersion,
+    pub(crate) name: String,
+}
+
+impl Command for Alias {
+    type Error = Error;
+
+    fn apply(self, config: &FnmConfig) -> Result<(), Self::Error> {
+        let applicable_version = choose_version_for_user_input(&self.to_version, config)
+            .context(CantUnderstandVersion)?
+            .context(VersionNotFound {
+                version: self.to_version,
+            })?;
+
+        create_alias(&config, &self.name, applicable_version.version())
+            .context(CantCreateSymlink)?;
+
+        Ok(())
+    }
+}
+
+#[derive(Debug, Snafu)]
+pub enum Error {
+    #[snafu(display("Can't create symlink for alias: {}", source))]
+    CantCreateSymlink { source: std::io::Error },
+    #[snafu(display("Can't list local installed versions: {}", source))]
+    VersionListingError { source: installed_versions::Error },
+    #[snafu(display("Version {} not found locally", version))]
+    VersionNotFound { version: UserVersion },
+    #[snafu(display("{}", source))]
+    CantUnderstandVersion { source: ApplicableVersionError },
+}
diff --git a/src/commands/command.rs b/src/commands/command.rs
new file mode 100644
index 0000000..8d4fa02
--- /dev/null
+++ b/src/commands/command.rs
@@ -0,0 +1,21 @@
+use crate::config::FnmConfig;
+use crate::outln;
+use colored::Colorize;
+
+pub trait Command: Sized {
+    type Error: std::error::Error;
+    fn apply(self, config: &FnmConfig) -> Result<(), Self::Error>;
+
+    fn handle_error(err: Self::Error, config: &FnmConfig) {
+        let err_s = format!("{}", err);
+        outln!(config#Error, "{} {}", "error:".red().bold(), err_s.red());
+        std::process::exit(1);
+    }
+
+    fn call(self, config: FnmConfig) {
+        match self.apply(&config) {
+            Ok(()) => (),
+            Err(err) => Self::handle_error(err, &config),
+        }
+    }
+}
diff --git a/src/commands/completions.rs b/src/commands/completions.rs
new file mode 100644
index 0000000..494fd6f
--- /dev/null
+++ b/src/commands/completions.rs
@@ -0,0 +1,27 @@
+use super::command::Command;
+use crate::cli::Cli;
+use crate::config::FnmConfig;
+use crate::shell::infer_shell;
+use structopt::clap::Shell;
+use structopt::StructOpt;
+
+#[derive(StructOpt, Debug)]
+pub struct Completions {
+    /// The shell syntax to use. Infers when missing.
+    #[structopt(long, possible_values = &Shell::variants())]
+    shell: Option<Shell>,
+}
+
+impl Command for Completions {
+    type Error = Error;
+
+    fn apply(self, _config: &FnmConfig) -> Result<(), Self::Error> {
+        let mut stdio = std::io::stdout();
+        let shell = self.shell.unwrap_or_else(|| infer_shell().into());
+        Cli::clap().gen_completions_to(env!("CARGO_PKG_NAME"), shell, &mut stdio);
+        Ok(())
+    }
+}
+
+#[derive(snafu::Snafu, Debug)]
+pub enum Error {}
diff --git a/src/commands/current.rs b/src/commands/current.rs
new file mode 100644
index 0000000..7d2b4a0
--- /dev/null
+++ b/src/commands/current.rs
@@ -0,0 +1,20 @@
+use super::command::Command;
+use crate::config::FnmConfig;
+use crate::current_version::{current_version, Error};
+use structopt::StructOpt;
+
+#[derive(StructOpt, Debug)]
+pub struct Current {}
+
+impl Command for Current {
+    type Error = Error;
+
+    fn apply(self, config: &FnmConfig) -> Result<(), Self::Error> {
+        let version_string = match current_version(&config)? {
+            Some(ver) => ver.v_str(),
+            None => "none".into(),
+        };
+        println!("{}", version_string);
+        Ok(())
+    }
+}
diff --git a/src/commands/default.rs b/src/commands/default.rs
new file mode 100644
index 0000000..603302d
--- /dev/null
+++ b/src/commands/default.rs
@@ -0,0 +1,24 @@
+use super::alias::Alias;
+use super::command::Command;
+use crate::config::FnmConfig;
+use crate::user_version::UserVersion;
+use structopt::StructOpt;
+
+#[derive(StructOpt, Debug)]
+pub struct Default {
+    version: UserVersion,
+}
+
+impl Command for Default {
+    type Error = super::alias::Error;
+    fn apply(self, config: &FnmConfig) -> Result<(), Self::Error> {
+        Alias {
+            name: "default".into(),
+            to_version: self.version,
+        }
+        .apply(config)
+    }
+    fn handle_error(err: Self::Error, config: &FnmConfig) {
+        Alias::handle_error(err, config)
+    }
+}
diff --git a/src/commands/env.rs b/src/commands/env.rs
new file mode 100644
index 0000000..a2369e5
--- /dev/null
+++ b/src/commands/env.rs
@@ -0,0 +1,106 @@
+use super::command::Command;
+use crate::config::FnmConfig;
+use crate::fs::symlink_dir;
+use crate::outln;
+use crate::shell::{infer_shell, Shell, AVAILABLE_SHELLS};
+use colored::Colorize;
+use std::fmt::Debug;
+use structopt::StructOpt;
+
+#[derive(StructOpt, Debug, Default)]
+pub struct Env {
+    /// The shell syntax to use. Infers when missing.
+    #[structopt(long)]
+    #[structopt(possible_values = AVAILABLE_SHELLS)]
+    shell: Option<Box<dyn Shell>>,
+    /// Deprecated. This is the default now.
+    #[structopt(long)]
+    multi: bool,
+    /// Print the script to change Node versions every directory change
+    #[structopt(long)]
+    use_on_cd: bool,
+}
+
+fn generate_symlink_path(root: &std::path::Path) -> std::path::PathBuf {
+    let temp_dir_name = format!(
+        "fnm_multishell_{}_{}",
+        std::process::id(),
+        chrono::Utc::now().timestamp_millis(),
+    );
+    root.join(temp_dir_name)
+}
+
+fn make_symlink(config: &FnmConfig) -> std::path::PathBuf {
+    let system_temp_dir = std::env::temp_dir();
+    let mut temp_dir = generate_symlink_path(&system_temp_dir);
+
+    while temp_dir.exists() {
+        temp_dir = generate_symlink_path(&system_temp_dir);
+    }
+
+    symlink_dir(config.default_version_dir(), &temp_dir).expect("Can't create symlink!");
+    temp_dir
+}
+
+impl Command for Env {
+    type Error = Error;
+
+    fn apply(self, config: &FnmConfig) -> Result<(), Self::Error> {
+        if self.multi {
+            outln!(config#Error, "{} {} is deprecated. This is now the default.", "warning:".yellow().bold(), "--multi".italic());
+        }
+
+        let shell: Box<dyn Shell> = self.shell.unwrap_or_else(&infer_shell);
+        let multishell_path = make_symlink(&config);
+        let binary_path = if cfg!(windows) {
+            multishell_path.clone()
+        } else {
+            multishell_path.join("bin")
+        };
+        println!("{}", shell.path(&binary_path));
+        println!(
+            "{}",
+            shell.set_env_var("FNM_MULTISHELL_PATH", multishell_path.to_str().unwrap())
+        );
+        println!(
+            "{}",
+            shell.set_env_var("FNM_DIR", config.base_dir_with_default().to_str().unwrap())
+        );
+        println!(
+            "{}",
+            shell.set_env_var("FNM_LOGLEVEL", config.log_level().clone().into())
+        );
+        println!(
+            "{}",
+            shell.set_env_var("FNM_NODE_DIST_MIRROR", config.node_dist_mirror.as_str())
+        );
+        if self.use_on_cd {
+            println!("{}", shell.use_on_cd(&config));
+        }
+        Ok(())
+    }
+}
+
+#[derive(Debug, snafu::Snafu)]
+pub enum Error {}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_smoke() {
+        use crate::shell;
+        let config = FnmConfig::default();
+        let shell: Box<dyn Shell> = if cfg!(windows) {
+            Box::from(shell::WindowsCmd)
+        } else {
+            Box::from(shell::Bash)
+        };
+        Env {
+            shell: Some(shell),
+            ..Env::default()
+        }
+        .call(config);
+    }
+}
diff --git a/src/commands/exec.rs b/src/commands/exec.rs
new file mode 100644
index 0000000..4279cc0
--- /dev/null
+++ b/src/commands/exec.rs
@@ -0,0 +1,82 @@
+use super::command::Command as Cmd;
+use crate::choose_version_for_user_input::choose_version_for_user_input;
+use crate::choose_version_for_user_input::Error as UserInputError;
+use crate::config::FnmConfig;
+use crate::user_version::UserVersion;
+use crate::version_files::get_user_version_from_file;
+use snafu::{OptionExt, ResultExt, Snafu};
+use std::process::{Command, Stdio};
+use structopt::StructOpt;
+
+#[derive(Debug, StructOpt)]
+pub struct Exec {
+    binary: String,
+    arguments: Vec<String>,
+    #[structopt(long = "using")]
+    version: Option<UserVersion>,
+}
+
+impl Cmd for Exec {
+    type Error = Error;
+
+    fn apply(self, config: &FnmConfig) -> Result<(), Self::Error> {
+        let version = self
+            .version
+            .or_else(|| {
+                let current_dir = std::env::current_dir().unwrap();
+                get_user_version_from_file(current_dir)
+            })
+            .context(CantInferVersion)?;
+
+        let applicable_version = choose_version_for_user_input(&version, &config)
+            .context(ApplicableVersionError)?
+            .context(VersionNotFound { version })?;
+
+        #[cfg(windows)]
+        let bin_path = applicable_version.path().to_path_buf();
+
+        #[cfg(unix)]
+        let bin_path = applicable_version.path().join("bin");
+
+        let path_env = {
+            let paths_env = std::env::var_os("PATH").context(CantReadPathVariable)?;
+            let mut paths: Vec<_> = std::env::split_paths(&paths_env).collect();
+            paths.insert(0, bin_path);
+            std::env::join_paths(paths).context(CantAddPathToEnvironment)?
+        };
+
+        let exit_status = Command::new(&self.binary)
+            .args(self.arguments)
+            .stdin(Stdio::inherit())
+            .stdout(Stdio::inherit())
+            .stderr(Stdio::inherit())
+            .env("PATH", path_env)
+            .spawn()
+            .expect("Can't spawn program")
+            .wait()
+            .expect("Failed to grab exit code");
+
+        std::process::exit(exit_status.code().unwrap());
+    }
+}
+
+#[derive(Debug, Snafu)]
+pub enum Error {
+    #[snafu(display("Can't read path environment variable"))]
+    CantReadPathVariable,
+    #[snafu(display("Can't add path to environment variable: {}", source))]
+    CantAddPathToEnvironment {
+        source: std::env::JoinPathsError,
+    },
+    #[snafu(display(
+        "Can't find version in dotfiles. Please provide a version manually to the command."
+    ))]
+    CantInferVersion,
+    #[snafu(display("Requested version {} is not currently installed", version))]
+    VersionNotFound {
+        version: UserVersion,
+    },
+    ApplicableVersionError {
+        source: UserInputError,
+    },
+}
diff --git a/src/commands/install.rs b/src/commands/install.rs
new file mode 100644
index 0000000..b92c029
--- /dev/null
+++ b/src/commands/install.rs
@@ -0,0 +1,153 @@
+use crate::alias::create_alias;
+use crate::config::FnmConfig;
+use crate::downloader::{install_node_dist, Error as DownloaderError};
+use crate::lts::LtsType;
+use crate::outln;
+use crate::remote_node_index;
+use crate::user_version::UserVersion;
+use crate::version::Version;
+use crate::version_files::get_user_version_from_file;
+use colored::Colorize;
+use log::debug;
+use snafu::{ensure, OptionExt, ResultExt, Snafu};
+use structopt::StructOpt;
+
+#[derive(StructOpt, Debug, Default)]
+pub struct Install {
+    /// A version string. Can be a partial semver or a LTS version name by the format lts/NAME
+    pub version: Option<UserVersion>,
+
+    /// Install latest LTS
+    #[structopt(long)]
+    pub lts: bool,
+}
+
+impl Install {
+    fn version(self) -> Result<Option<UserVersion>, Error> {
+        match self {
+            Self {
+                version: Some(_),
+                lts: true,
+            } => Err(Error::TooManyVersionsProvided),
+            Self {
+                version: v,
+                lts: false,
+            } => Ok(v),
+            Self {
+                version: None,
+                lts: true,
+            } => Ok(Some(UserVersion::Full(Version::Lts(LtsType::Latest)))),
+        }
+    }
+}
+
+impl super::command::Command for Install {
+    type Error = Error;
+
+    fn apply(self, config: &FnmConfig) -> Result<(), Self::Error> {
+        let current_dir = std::env::current_dir().unwrap();
+        let current_version = self
+            .version()?
+            .or_else(|| get_user_version_from_file(current_dir))
+            .context(CantInferVersion)?;
+
+        let version = match current_version.clone() {
+            UserVersion::Full(Version::Semver(actual_version)) => Version::Semver(actual_version),
+            UserVersion::Full(v @ Version::Bypassed) | UserVersion::Full(v @ Version::Alias(_)) => {
+                ensure!(false, UninstallableVersion { version: v });
+                unreachable!();
+            }
+            UserVersion::Full(Version::Lts(lts_type)) => {
+                let available_versions: Vec<_> = remote_node_index::list(&config.node_dist_mirror)
+                    .context(CantListRemoteVersions)?;
+                let picked_version = lts_type
+                    .pick_latest(&available_versions)
+                    .with_context(|| CantFindRelevantLts {
+                        lts_type: lts_type.clone(),
+                    })?
+                    .version
+                    .clone();
+                debug!(
+                    "Resolved {} into Node version {}",
+                    Version::Lts(lts_type).v_str().cyan(),
+                    picked_version.v_str().cyan()
+                );
+                picked_version
+            }
+            current_version => {
+                let available_versions: Vec<_> = remote_node_index::list(&config.node_dist_mirror)
+                    .context(CantListRemoteVersions)?
+                    .drain(..)
+                    .map(|x| x.version)
+                    .collect();
+
+                current_version
+                    .to_version(&available_versions)
+                    .context(CantFindNodeVersion {
+                        requested_version: current_version,
+                    })?
+                    .clone()
+            }
+        };
+        let version_str = format!("Node {}", &version);
+        outln!(config#Info, "Installing {}", version_str.cyan());
+        match install_node_dist(
+            &version,
+            &config.node_dist_mirror,
+            config.installations_dir(),
+        ) {
+            Err(err @ DownloaderError::VersionAlreadyInstalled { .. }) => {
+                outln!(config#Error, "{} {}", "warning:".bold().yellow(), err);
+            }
+            other_err => other_err.context(DownloadError)?,
+        };
+
+        if let UserVersion::Full(Version::Lts(lts_type)) = current_version {
+            let alias_name = Version::Lts(lts_type).v_str();
+            debug!(
+                "Tagging {} as alias for {}",
+                alias_name.cyan(),
+                version.v_str().cyan()
+            );
+            create_alias(&config, &alias_name, &version).context(IoError)?;
+        }
+
+        Ok(())
+    }
+}
+
+#[derive(Debug, Snafu)]
+pub enum Error {
+    #[snafu(display("Can't download the requested version: {}", source))]
+    DownloadError {
+        source: DownloaderError,
+    },
+    IoError {
+        source: std::io::Error,
+    },
+    #[snafu(display(
+        "Can't find version in dotfiles. Please provide a version manually to the command."
+    ))]
+    CantInferVersion,
+    #[snafu(display("Having a hard time listing the remote versions: {}", source))]
+    CantListRemoteVersions {
+        source: reqwest::Error,
+    },
+    #[snafu(display(
+        "Can't find a Node version that matches {} in remote",
+        requested_version
+    ))]
+    CantFindNodeVersion {
+        requested_version: UserVersion,
+    },
+    #[snafu(display("Can't find relevant LTS named {}", lts_type))]
+    CantFindRelevantLts {
+        lts_type: crate::lts::LtsType,
+    },
+    #[snafu(display("The requested version is not installable: {}", version.v_str()))]
+    UninstallableVersion {
+        version: Version,
+    },
+    #[snafu(display("Too many versions provided. Please don't use --lts with a version string."))]
+    TooManyVersionsProvided,
+}
diff --git a/src/commands/ls_local.rs b/src/commands/ls_local.rs
new file mode 100644
index 0000000..ce635bf
--- /dev/null
+++ b/src/commands/ls_local.rs
@@ -0,0 +1,79 @@
+use crate::alias::{list_aliases, StoredAlias};
+use crate::config::FnmConfig;
+use crate::current_version::current_version;
+use crate::outln;
+use crate::version::Version;
+use colored::*;
+use snafu::{ResultExt, Snafu};
+use std::collections::HashMap;
+use structopt::StructOpt;
+
+#[derive(StructOpt, Debug)]
+pub struct LsLocal {}
+
+impl super::command::Command for LsLocal {
+    type Error = Error;
+
+    fn apply(self, config: &FnmConfig) -> Result<(), Self::Error> {
+        let base_dir = config.installations_dir();
+        let mut versions: Vec<_> = std::fs::read_dir(&base_dir)
+            .context(CantListLocallyInstalledVersion)?
+            .filter_map(|x| {
+                if let Ok(version_dir) = x {
+                    let file_name = version_dir.file_name();
+                    file_name.to_str().and_then(|x| Version::parse(x).ok())
+                } else {
+                    None
+                }
+            })
+            .collect();
+        versions.insert(0, Version::Bypassed);
+        versions.sort();
+        let aliases_hash = generate_aliases_hash(&config).context(CantReadAliases)?;
+        let curr_version = current_version(&config).ok().flatten();
+
+        for version in versions {
+            let version_aliases = match aliases_hash.get(&version.v_str()) {
+                None => "".into(),
+                Some(versions) => {
+                    let version_string = versions
+                        .iter()
+                        .map(|x| x.name())
+                        .collect::<Vec<_>>()
+                        .join(", ");
+                    format!(" {}", version_string.dimmed())
+                }
+            };
+
+            let version_str = format!("* {}{}", version, version_aliases);
+
+            if curr_version == Some(version) {
+                outln!(config#Info, "{}", version_str.cyan());
+            } else {
+                outln!(config#Info, "{}", version_str);
+            }
+        }
+        Ok(())
+    }
+}
+
+fn generate_aliases_hash(config: &FnmConfig) -> std::io::Result<HashMap<String, Vec<StoredAlias>>> {
+    let mut aliases = list_aliases(&config)?;
+    let mut hashmap: HashMap<String, Vec<StoredAlias>> = HashMap::with_capacity(aliases.len());
+    for alias in aliases.drain(..) {
+        if let Some(value) = hashmap.get_mut(alias.s_ver()) {
+            value.push(alias);
+        } else {
+            hashmap.insert(alias.s_ver().into(), vec![alias]);
+        }
+    }
+    Ok(hashmap)
+}
+
+#[derive(Debug, Snafu)]
+pub enum Error {
+    #[snafu(display("Can't list locally installed versions: {}", source))]
+    CantListLocallyInstalledVersion { source: std::io::Error },
+    #[snafu(display("Can't read aliases: {}", source))]
+    CantReadAliases { source: std::io::Error },
+}
diff --git a/src/commands/ls_remote.rs b/src/commands/ls_remote.rs
new file mode 100644
index 0000000..9855ef9
--- /dev/null
+++ b/src/commands/ls_remote.rs
@@ -0,0 +1,32 @@
+use crate::config::FnmConfig;
+use crate::remote_node_index;
+use snafu::{ResultExt, Snafu};
+use structopt::StructOpt;
+
+#[derive(StructOpt, Debug)]
+pub struct LsRemote {}
+
+impl super::command::Command for LsRemote {
+    type Error = Error;
+
+    fn apply(self, config: &FnmConfig) -> Result<(), Self::Error> {
+        let mut all_versions =
+            remote_node_index::list(&config.node_dist_mirror).context(HttpError)?;
+        all_versions.sort();
+
+        for version in all_versions {
+            print!("{}", version.version);
+            if let Some(lts) = &version.lts {
+                print!(" ({})", lts);
+            }
+            println!();
+        }
+
+        Ok(())
+    }
+}
+
+#[derive(Debug, Snafu)]
+pub enum Error {
+    HttpError { source: reqwest::Error },
+}
diff --git a/src/commands/mod.rs b/src/commands/mod.rs
new file mode 100644
index 0000000..7c664d7
--- /dev/null
+++ b/src/commands/mod.rs
@@ -0,0 +1,11 @@
+pub mod alias;
+pub mod command;
+pub mod completions;
+pub mod current;
+pub mod default;
+pub mod env;
+pub mod exec;
+pub mod install;
+pub mod ls_local;
+pub mod ls_remote;
+pub mod r#use;
diff --git a/src/commands/use.rs b/src/commands/use.rs
new file mode 100644
index 0000000..50d7418
--- /dev/null
+++ b/src/commands/use.rs
@@ -0,0 +1,137 @@
+use super::command::Command;
+use super::install::Install;
+use crate::config::FnmConfig;
+use crate::fs;
+use crate::installed_versions;
+use crate::outln;
+use crate::system_version;
+use crate::user_version::UserVersion;
+use crate::version::Version;
+use crate::version_files::get_user_version_from_file;
+use colored::Colorize;
+use snafu::{ensure, OptionExt, ResultExt, Snafu};
+use structopt::StructOpt;
+
+#[derive(StructOpt, Debug)]
+pub struct Use {
+    version: Option<UserVersion>,
+    /// Install the version if it isn't installed yet
+    #[structopt(long)]
+    install_if_missing: bool,
+}
+
+impl Command for Use {
+    type Error = Error;
+
+    fn apply(self, config: &FnmConfig) -> Result<(), Self::Error> {
+        let all_versions =
+            installed_versions::list(config.installations_dir()).context(VersionListingError)?;
+        let requested_version = self
+            .version
+            .or_else(|| {
+                let current_dir = std::env::current_dir().unwrap();
+                get_user_version_from_file(current_dir)
+            })
+            .context(CantInferVersion)?;
+
+        let version_path = if let UserVersion::Full(Version::Bypassed) = requested_version {
+            outln!(config#Info, "Bypassing fnm: using {} node", "system".cyan());
+            system_version::path()
+        } else if let Some(alias_name) = requested_version.alias_name() {
+            let alias_path = config.aliases_dir().join(&alias_name);
+            ensure!(
+                alias_path.exists(),
+                CantFindVersion {
+                    version: requested_version
+                }
+            );
+            outln!(config#Info, "Using Node for alias {}", alias_name.cyan());
+            alias_path
+        } else {
+            let current_version = requested_version.to_version(&all_versions);
+            match current_version {
+                Some(version) => {
+                    outln!(config#Info, "Using Node {}", version.to_string().cyan());
+                    config
+                        .installations_dir()
+                        .join(version.to_string())
+                        .join("installation")
+                }
+                None => {
+                    ensure!(
+                        self.install_if_missing || should_install_interactively(&requested_version),
+                        CantFindVersion {
+                            version: requested_version
+                        }
+                    );
+
+                    Install {
+                        version: Some(requested_version.clone()),
+                        ..Default::default()
+                    }
+                    .apply(config)
+                    .context(InstallError)?;
+
+                    Self {
+                        version: Some(requested_version),
+                        install_if_missing: self.install_if_missing,
+                    }
+                    .apply(config)?;
+
+                    return Ok(());
+                }
+            }
+        };
+
+        let multishell_path = config
+            .multishell_path()
+            .expect("fnm isn't set up. Have you tried running `fnm env`?");
+
+        fs::remove_symlink_dir(&multishell_path).context(SymlinkingDeletionIssue)?;
+        fs::symlink_dir(version_path, &multishell_path).context(SymlinkingCreationIssue)?;
+
+        Ok(())
+    }
+}
+
+fn should_install_interactively(requested_version: &UserVersion) -> bool {
+    if !(atty::is(atty::Stream::Stdout) && atty::is(atty::Stream::Stdin)) {
+        return false;
+    }
+
+    use std::io::Write;
+    let error_message = format!(
+        "Can't find version that matches {}.",
+        requested_version.to_string().italic()
+    );
+    eprintln!("{}", error_message.red());
+    let do_you_want = format!("Do you want to install it? {} [y/n]:", "answer".bold());
+    eprint!("{} ", do_you_want.yellow());
+    std::io::stdout().flush().unwrap();
+    let mut s = String::new();
+    std::io::stdin()
+        .read_line(&mut s)
+        .expect("Can't read user input");
+
+    s.trim().to_lowercase() == "y"
+}
+
+#[derive(Debug, Snafu)]
+pub enum Error {
+    #[snafu(display("Can't create the symlink: {}", source))]
+    SymlinkingCreationIssue { source: std::io::Error },
+    #[snafu(display("Can't delete the symlink: {}", source))]
+    SymlinkingDeletionIssue { source: std::io::Error },
+    #[snafu(display("{}", source))]
+    InstallError { source: <Install as Command>::Error },
+    #[snafu(display("Can't get locally installed versions: {}", source))]
+    VersionListingError {
+        source: crate::installed_versions::Error,
+    },
+    #[snafu(display("Requested version {} is not currently installed", version))]
+    CantFindVersion { version: UserVersion },
+    #[snafu(display(
+        "Can't find version in dotfiles. Please provide a version manually to the command."
+    ))]
+    CantInferVersion,
+}
diff --git a/src/config.rs b/src/config.rs
new file mode 100644
index 0000000..0e6fdb6
--- /dev/null
+++ b/src/config.rs
@@ -0,0 +1,74 @@
+use crate::log_level::LogLevel;
+use dirs::home_dir;
+use structopt::StructOpt;
+
+#[derive(StructOpt, Debug)]
+pub struct FnmConfig {
+    /// https://nodejs.org/dist/ mirror
+    #[structopt(
+        long,
+        env = "FNM_NODE_DIST_MIRROR",
+        default_value = "https://nodejs.org/dist"
+    )]
+    pub node_dist_mirror: reqwest::Url,
+
+    /// The root directory of fnm installations.
+    #[structopt(long = "fnm-dir", env = "FNM_DIR")]
+    pub base_dir: Option<std::path::PathBuf>,
+
+    /// Where the current node version link is stored
+    #[structopt(long, env = "FNM_MULTISHELL_PATH")]
+    multishell_path: Option<std::path::PathBuf>,
+
+    /// The log level of fnm commands
+    #[structopt(long, env = "FNM_LOGLEVEL", default_value = "info")]
+    log_level: LogLevel,
+}
+
+impl Default for FnmConfig {
+    fn default() -> Self {
+        Self {
+            node_dist_mirror: reqwest::Url::parse("https://nodejs.org/dist/").unwrap(),
+            base_dir: None,
+            multishell_path: None,
+            log_level: LogLevel::Info,
+        }
+    }
+}
+
+impl FnmConfig {
+    pub fn multishell_path(&self) -> Option<&std::path::Path> {
+        match &self.multishell_path {
+            None => None,
+            Some(v) => Some(v.as_path()),
+        }
+    }
+
+    pub fn log_level(&self) -> &LogLevel {
+        &self.log_level
+    }
+
+    pub fn base_dir_with_default(&self) -> std::path::PathBuf {
+        ensure_exists_silently(
+            (self.base_dir.clone())
+                .unwrap_or_else(|| home_dir().expect("Can't get home directory").join(".fnm")),
+        )
+    }
+
+    pub fn installations_dir(&self) -> std::path::PathBuf {
+        ensure_exists_silently(self.base_dir_with_default().join("node-versions"))
+    }
+
+    pub fn default_version_dir(&self) -> std::path::PathBuf {
+        self.aliases_dir().join("default")
+    }
+
+    pub fn aliases_dir(&self) -> std::path::PathBuf {
+        ensure_exists_silently(self.base_dir_with_default().join("aliases"))
+    }
+}
+
+fn ensure_exists_silently<T: AsRef<std::path::Path>>(path: T) -> T {
+    std::fs::create_dir_all(path.as_ref()).ok();
+    path
+}
diff --git a/src/current_version.rs b/src/current_version.rs
new file mode 100644
index 0000000..88c5342
--- /dev/null
+++ b/src/current_version.rs
@@ -0,0 +1,40 @@
+use crate::config::FnmConfig;
+use crate::system_version;
+use crate::version::Version;
+use snafu::{OptionExt, ResultExt, Snafu};
+
+pub fn current_version(config: &FnmConfig) -> Result<Option<Version>, Error> {
+    let multishell_path = config.multishell_path().context(EnvNotApplied)?;
+
+    if multishell_path.read_link().ok() == Some(system_version::path()) {
+        return Ok(Some(Version::Bypassed));
+    }
+
+    if let Ok(resolved_path) = std::fs::canonicalize(multishell_path) {
+        let installation_path = resolved_path
+            .parent()
+            .expect("multishell path can't be in the root");
+        let file_name = installation_path
+            .file_name()
+            .expect("Can't get filename")
+            .to_str()
+            .expect("Invalid OS string");
+        let version = Version::parse(file_name).context(VersionError { version: file_name })?;
+        Ok(Some(version))
+    } else {
+        Ok(None)
+    }
+}
+
+#[derive(Debug, Snafu)]
+pub enum Error {
+    #[snafu(display(
+        "`fnm env` was not applied in this context.\nCan't find fnm's environment variables"
+    ))]
+    EnvNotApplied,
+    #[snafu(display("Can't read the version as a valid semver"))]
+    VersionError {
+        source: semver::SemVerError,
+        version: String,
+    },
+}
diff --git a/src/directory_portal.rs b/src/directory_portal.rs
new file mode 100644
index 0000000..25f1e73
--- /dev/null
+++ b/src/directory_portal.rs
@@ -0,0 +1,63 @@
+use log::*;
+use std::path::Path;
+use tempfile::{tempdir, TempDir};
+
+pub struct DirectoryPortal<P: AsRef<Path>> {
+    temp_dir: TempDir,
+    target: P,
+}
+
+impl<P: AsRef<Path>> DirectoryPortal<P> {
+    #[must_use]
+    pub fn new(target: P) -> Self {
+        let temp_dir = tempdir().expect("Can't generate a temp directory");
+        debug!("Created a temp directory in {:?}", temp_dir.path());
+        Self { target, temp_dir }
+    }
+
+    pub fn teleport(self) -> std::io::Result<P> {
+        debug!(
+            "Moving directory {:?} into {:?}",
+            self.temp_dir.path(),
+            self.target.as_ref()
+        );
+        std::fs::rename(&self.temp_dir, &self.target)?;
+        Ok(self.target)
+    }
+}
+
+impl<P: AsRef<Path>> std::ops::Deref for DirectoryPortal<P> {
+    type Target = Path;
+    fn deref(&self) -> &Self::Target {
+        self.as_ref()
+    }
+}
+
+impl<P: AsRef<Path>> AsRef<Path> for DirectoryPortal<P> {
+    fn as_ref(&self) -> &Path {
+        self.temp_dir.as_ref()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use pretty_assertions::assert_eq;
+
+    #[test]
+    fn test_portal() {
+        let tempdir = tempdir().expect("Can't generate a temp directory");
+        let portal = DirectoryPortal::new(tempdir.path().join("subdir"));
+        let new_file_path = portal.to_path_buf().join("README.md");
+        std::fs::write(&new_file_path, "Hello world!").expect("Can't write file");
+        let target = portal.teleport().expect("Can't close directory portal");
+
+        let file_exists: Vec<_> = target
+            .read_dir()
+            .expect("Can't read dir")
+            .map(|x| x.unwrap().file_name().into_string().unwrap())
+            .collect();
+
+        assert_eq!(file_exists, vec!["README.md"]);
+    }
+}
diff --git a/src/downloader.rs b/src/downloader.rs
new file mode 100644
index 0000000..5cdbb48
--- /dev/null
+++ b/src/downloader.rs
@@ -0,0 +1,159 @@
+use crate::archive;
+use crate::archive::{Error as ExtractError, Extract};
+use crate::directory_portal::DirectoryPortal;
+use crate::version::Version;
+use log::debug;
+use reqwest::Url;
+use snafu::{ensure, OptionExt, ResultExt, Snafu};
+use std::path::Path;
+use std::path::PathBuf;
+
+#[derive(Debug, Snafu)]
+pub enum Error {
+    HttpError {
+        source: reqwest::Error,
+    },
+    IoError {
+        source: std::io::Error,
+    },
+    #[snafu(display("Can't extract the file: {}", source))]
+    CantExtractFile {
+        source: ExtractError,
+    },
+    #[snafu(display("The downloaded archive is empty"))]
+    TarIsEmpty,
+    #[snafu(display("Can't find version upstream"))]
+    VersionNotFound,
+    #[snafu(display("Version already installed at {:?}", path))]
+    VersionAlreadyInstalled {
+        path: PathBuf,
+    },
+}
+
+#[cfg(unix)]
+fn filename_for_version(version: &Version) -> String {
+    use crate::system_info::{platform_arch, platform_name};
+    format!(
+        "node-{node_ver}-{platform}-{arch}.tar.xz",
+        node_ver = &version,
+        platform = platform_name(),
+        arch = platform_arch(),
+    )
+}
+
+#[cfg(windows)]
+fn filename_for_version(version: &Version) -> String {
+    format!(
+        "node-{node_ver}-win-{arch}.zip",
+        node_ver = &version,
+        arch = crate::system_info::platform_arch(),
+    )
+}
+
+fn download_url(base_url: &Url, version: &Version) -> Url {
+    Url::parse(&format!(
+        "{}/{}/{}",
+        base_url.as_str().trim_end_matches('/'),
+        version,
+        filename_for_version(version)
+    ))
+    .unwrap()
+}
+
+pub fn extract_archive_into<P: AsRef<Path>>(
+    path: P,
+    response: reqwest::blocking::Response,
+) -> Result<(), Error> {
+    #[cfg(unix)]
+    let extractor = archive::TarXz::new(response);
+    #[cfg(windows)]
+    let extractor = archive::Zip::new(response);
+    extractor.extract_into(path).context(CantExtractFile)?;
+    Ok(())
+}
+
+/// Install a Node package
+pub fn install_node_dist<P: AsRef<Path>>(
+    version: &Version,
+    node_dist_mirror: &Url,
+    installations_dir: P,
+) -> Result<(), Error> {
+    let installation_dir = PathBuf::from(installations_dir.as_ref()).join(version.v_str());
+
+    ensure!(
+        !installation_dir.exists(),
+        VersionAlreadyInstalled {
+            path: installation_dir
+        }
+    );
+
+    std::fs::create_dir_all(installations_dir.as_ref()).context(IoError)?;
+    let portal = DirectoryPortal::new(installation_dir);
+
+    let url = download_url(node_dist_mirror, version);
+    debug!("Going to call for {}", &url);
+    let response = reqwest::blocking::get(url).context(HttpError)?;
+
+    if response.status() == 404 {
+        return Err(Error::VersionNotFound);
+    }
+
+    debug!("Extracting response...");
+    extract_archive_into(&portal, response)?;
+    debug!("Extraction completed");
+
+    let installed_directory = std::fs::read_dir(&portal)
+        .context(IoError)?
+        .next()
+        .context(TarIsEmpty)?
+        .context(IoError)?;
+    let installed_directory = installed_directory.path();
+
+    let renamed_installation_dir = portal.join("installation");
+    std::fs::rename(installed_directory, renamed_installation_dir).context(IoError)?;
+
+    portal.teleport().context(IoError)?;
+
+    Ok(())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::downloader::install_node_dist;
+    use crate::version::Version;
+    use pretty_assertions::assert_eq;
+    use std::io::Read;
+    use tempfile::tempdir;
+
+    #[test_env_log::test]
+    fn test_installing_node_12() {
+        let version = Version::parse("12.0.0").unwrap();
+        let node_dist_mirror = Url::parse("https://nodejs.org/dist/").unwrap();
+        let installations_dir = tempdir().unwrap();
+        install_node_dist(&version, &node_dist_mirror, &installations_dir)
+            .expect("Can't install Node 12");
+
+        let mut location_path = PathBuf::from(&installations_dir.path());
+        location_path.push(version.v_str());
+        location_path.push("installation");
+
+        if cfg!(unix) {
+            location_path.push("bin");
+        }
+
+        location_path.push("node");
+
+        let mut result = String::new();
+        std::process::Command::new(location_path.to_str().unwrap())
+            .arg("--version")
+            .stdout(std::process::Stdio::piped())
+            .spawn()
+            .expect("Can't find node executable")
+            .stdout
+            .expect("Can't capture stdout")
+            .read_to_string(&mut result)
+            .expect("Failed reading stdout");
+        assert_eq!(result.trim(), "v12.0.0");
+    }
+}
diff --git a/src/fs.rs b/src/fs.rs
new file mode 100644
index 0000000..877680e
--- /dev/null
+++ b/src/fs.rs
@@ -0,0 +1,25 @@
+use std::path::Path;
+
+#[cfg(unix)]
+pub fn symlink_dir<P: AsRef<Path>, U: AsRef<Path>>(from: P, to: U) -> std::io::Result<()> {
+    std::os::unix::fs::symlink(from, to)?;
+    Ok(())
+}
+
+#[cfg(windows)]
+pub fn symlink_dir<P: AsRef<Path>, U: AsRef<Path>>(from: P, to: U) -> std::io::Result<()> {
+    std::os::windows::fs::symlink_dir(from, to)?;
+    Ok(())
+}
+
+#[cfg(windows)]
+pub fn remove_symlink_dir<P: AsRef<Path>>(path: P) -> std::io::Result<()> {
+    std::fs::remove_dir(path)?;
+    Ok(())
+}
+
+#[cfg(unix)]
+pub fn remove_symlink_dir<P: AsRef<Path>>(path: P) -> std::io::Result<()> {
+    std::fs::remove_file(path)?;
+    Ok(())
+}
diff --git a/src/installed_versions.rs b/src/installed_versions.rs
new file mode 100644
index 0000000..90cc1d7
--- /dev/null
+++ b/src/installed_versions.rs
@@ -0,0 +1,27 @@
+use crate::version::Version;
+use snafu::{ResultExt, Snafu};
+use std::path::Path;
+
+pub fn list<P: AsRef<Path>>(installations_dir: P) -> Result<Vec<Version>, Error> {
+    let mut vec = vec![];
+    for result_entry in installations_dir.as_ref().read_dir().context(IoError)? {
+        let entry = result_entry.context(IoError)?;
+        let path = entry.path();
+        let filename = path
+            .file_name()
+            .ok_or_else(|| std::io::Error::from(std::io::ErrorKind::NotFound))
+            .context(IoError)?
+            .to_str()
+            .ok_or_else(|| std::io::Error::from(std::io::ErrorKind::NotFound))
+            .context(IoError)?;
+        let version = Version::parse(filename).context(SemverError)?;
+        vec.push(version);
+    }
+    Ok(vec)
+}
+
+#[derive(Debug, Snafu)]
+pub enum Error {
+    IoError { source: std::io::Error },
+    SemverError { source: semver::SemVerError },
+}
diff --git a/src/log_level.rs b/src/log_level.rs
new file mode 100644
index 0000000..783693e
--- /dev/null
+++ b/src/log_level.rs
@@ -0,0 +1,71 @@
+#[derive(Debug, PartialEq, PartialOrd, Eq, Ord, Clone)]
+pub enum LogLevel {
+    Quiet,
+    Error,
+    Info,
+}
+
+impl LogLevel {
+    pub fn is_writable(&self, logging: &Self) -> bool {
+        use std::cmp::Ordering;
+        match self.cmp(logging) {
+            Ordering::Greater | Ordering::Equal => true,
+            _ => false,
+        }
+    }
+
+    pub fn writer_for(&self, logging: &Self) -> Box<dyn std::io::Write> {
+        if self.is_writable(logging) {
+            match logging {
+                Self::Error => Box::from(std::io::stderr()),
+                _ => Box::from(std::io::stdout()),
+            }
+        } else {
+            Box::from(std::io::sink())
+        }
+    }
+}
+
+impl Into<&'static str> for LogLevel {
+    fn into(self) -> &'static str {
+        match self {
+            Self::Quiet => "quiet",
+            Self::Info => "info",
+            Self::Error => "error",
+        }
+    }
+}
+
+impl std::str::FromStr for LogLevel {
+    type Err = String;
+
+    fn from_str(s: &str) -> Result<LogLevel, Self::Err> {
+        match s {
+            "quiet" => Ok(Self::Quiet),
+            "info" => Ok(Self::Info),
+            "error" => Ok(Self::Error),
+            loglevel => Err(format!("I don't know the log level of {:?}", loglevel)),
+        }
+    }
+}
+
+#[macro_export]
+macro_rules! outln {
+    ($config:ident#$level:path, $($expr:expr),+) => {{
+        use $crate::log_level::LogLevel::*;
+        writeln!($config.log_level().writer_for(&$level), $($expr),+).expect("Can't write output");
+    }}
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_is_writable() {
+        assert!(!LogLevel::Quiet.is_writable(&LogLevel::Info));
+        assert!(!LogLevel::Error.is_writable(&LogLevel::Info));
+        assert!(LogLevel::Info.is_writable(&LogLevel::Info));
+        assert!(LogLevel::Info.is_writable(&LogLevel::Error));
+    }
+}
diff --git a/src/lts.rs b/src/lts.rs
new file mode 100644
index 0000000..a256bb0
--- /dev/null
+++ b/src/lts.rs
@@ -0,0 +1,47 @@
+use crate::remote_node_index::IndexedNodeVersion;
+use std::fmt::Display;
+
+#[derive(Debug, PartialEq, PartialOrd, Eq, Ord, Clone)]
+pub enum LtsType {
+    /// lts-*, lts/*
+    Latest,
+    /// lts-erbium, lts/erbium
+    CodeName(String),
+}
+
+impl From<&str> for LtsType {
+    fn from(s: &str) -> Self {
+        if s == "*" || s == "latest" {
+            Self::Latest
+        } else {
+            Self::CodeName(s.to_string())
+        }
+    }
+}
+
+impl Display for LtsType {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Latest => write!(f, "latest"),
+            Self::CodeName(s) => write!(f, "{}", s),
+        }
+    }
+}
+
+impl LtsType {
+    pub fn pick_latest<'vec>(
+        &self,
+        versions: &'vec [IndexedNodeVersion],
+    ) -> Option<&'vec IndexedNodeVersion> {
+        match self {
+            Self::Latest => versions.iter().filter(|x| x.lts.is_some()).last(),
+            Self::CodeName(s) => versions
+                .iter()
+                .filter(|x| match &x.lts {
+                    None => false,
+                    Some(x) => s.to_lowercase() == x.to_lowercase(),
+                })
+                .last(),
+        }
+    }
+}
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..db74201
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,28 @@
+mod alias;
+mod archive;
+mod choose_version_for_user_input;
+mod cli;
+mod commands;
+mod config;
+mod current_version;
+mod directory_portal;
+mod downloader;
+mod fs;
+mod installed_versions;
+mod lts;
+mod remote_node_index;
+mod shell;
+mod system_info;
+mod system_version;
+mod user_version;
+mod version;
+mod version_files;
+
+#[macro_use]
+mod log_level;
+
+fn main() {
+    env_logger::init();
+    let value = crate::cli::parse();
+    value.subcmd.call(value.config);
+}
diff --git a/src/remote_node_index.rs b/src/remote_node_index.rs
new file mode 100644
index 0000000..26a11d9
--- /dev/null
+++ b/src/remote_node_index.rs
@@ -0,0 +1,110 @@
+use crate::version::Version;
+use serde::Deserialize;
+
+mod lts_status {
+    use serde::{Deserialize, Deserializer};
+
+    #[derive(Deserialize, Debug, PartialEq, Eq)]
+    #[serde(untagged)]
+    enum LtsStatus {
+        Nope(bool),
+        Yes(String),
+    }
+
+    impl Into<Option<String>> for LtsStatus {
+        fn into(self) -> Option<String> {
+            match self {
+                Self::Nope(_) => None,
+                Self::Yes(x) => Some(x),
+            }
+        }
+    }
+
+    pub fn deserialize<'de, D>(deserializer: D) -> Result<Option<String>, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        Ok(LtsStatus::deserialize(deserializer)?.into())
+    }
+
+    #[cfg(test)]
+    mod tests {
+        use super::*;
+        use pretty_assertions::assert_eq;
+
+        #[derive(Deserialize)]
+        struct TestSubject {
+            #[serde(deserialize_with = "deserialize")]
+            lts: Option<String>,
+        }
+
+        #[test]
+        fn test_false_deserialization() {
+            let json = serde_json::json!({ "lts": false });
+            let subject: TestSubject =
+                serde_json::from_value(json).expect("Can't deserialize json");
+            assert_eq!(subject.lts, None);
+        }
+
+        #[test]
+        fn test_value_deserialization() {
+            let json = serde_json::json!({ "lts": "dubnium" });
+            let subject: TestSubject =
+                serde_json::from_value(json).expect("Can't deserialize json");
+            assert_eq!(subject.lts, Some("dubnium".into()));
+        }
+    }
+}
+
+#[derive(Deserialize, Debug, Eq, Ord)]
+pub struct IndexedNodeVersion {
+    pub version: Version,
+    #[serde(with = "lts_status")]
+    pub lts: Option<String>,
+    pub date: chrono::NaiveDate,
+    pub files: Vec<String>,
+}
+
+impl PartialEq for IndexedNodeVersion {
+    fn eq(&self, other: &Self) -> bool {
+        self.version.eq(&other.version)
+    }
+}
+
+impl PartialOrd for IndexedNodeVersion {
+    fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
+        self.version.partial_cmp(&other.version)
+    }
+}
+
+/// Prints
+///
+/// ```rust
+/// use crate::remote_node_index::list;
+/// ```
+pub fn list(base_url: &reqwest::Url) -> Result<Vec<IndexedNodeVersion>, reqwest::Error> {
+    let index_json_url = format!("{}/index.json", base_url);
+    let mut value: Vec<IndexedNodeVersion> = reqwest::blocking::get(&index_json_url)?.json()?;
+    value.sort();
+    Ok(value)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use pretty_assertions::assert_eq;
+
+    #[test]
+    fn test_list() {
+        let base_url = reqwest::Url::parse("https://nodejs.org/dist").unwrap();
+        let expected_version = Version::parse("12.0.0").unwrap();
+        let mut versions = list(&base_url).expect("Can't get HTTP data");
+        assert_eq!(
+            versions
+                .drain(..)
+                .find(|x| x.version == expected_version)
+                .map(|x| x.version),
+            Some(expected_version)
+        );
+    }
+}
diff --git a/src/shell/bash.rs b/src/shell/bash.rs
new file mode 100644
index 0000000..3099bda
--- /dev/null
+++ b/src/shell/bash.rs
@@ -0,0 +1,41 @@
+use super::shell::Shell;
+use indoc::indoc;
+use std::path::PathBuf;
+
+#[derive(Debug)]
+pub struct Bash;
+
+impl Shell for Bash {
+    fn into_structopt_shell(&self) -> structopt::clap::Shell {
+        structopt::clap::Shell::Bash
+    }
+
+    fn path(&self, path: &PathBuf) -> String {
+        format!("export PATH={:?}:$PATH", path.to_str().unwrap())
+    }
+
+    fn set_env_var(&self, name: &str, value: &str) -> String {
+        format!("export {}={:?}", name, value)
+    }
+
+    fn use_on_cd(&self, _config: &crate::config::FnmConfig) -> String {
+        indoc!(
+            r#"
+                __fnmcd () {
+                    cd "$@"
+
+                    if [[ -f .node-version && .node-version ]]; then
+                        echo "fnm: Found .node-version"
+                        fnm use
+                    elif [[ -f .nvmrc && .nvmrc ]]; then
+                        echo "fnm: Found .nvmrc"
+                        fnm use
+                    fi
+                }
+
+                alias cd=__fnmcd
+            "#
+        )
+        .into()
+    }
+}
diff --git a/src/shell/fish.rs b/src/shell/fish.rs
new file mode 100644
index 0000000..5e3fec5
--- /dev/null
+++ b/src/shell/fish.rs
@@ -0,0 +1,38 @@
+use super::shell::Shell;
+use indoc::indoc;
+use std::path::PathBuf;
+
+#[derive(Debug)]
+pub struct Fish;
+
+impl Shell for Fish {
+    fn into_structopt_shell(&self) -> structopt::clap::Shell {
+        structopt::clap::Shell::Fish
+    }
+
+    fn path(&self, path: &PathBuf) -> String {
+        format!("set -gx PATH {:?} $PATH;", path.to_str().unwrap())
+    }
+
+    fn set_env_var(&self, name: &str, value: &str) -> String {
+        format!("set -gx {name} {value:?};", name = name, value = value)
+    }
+
+    fn use_on_cd(&self, _config: &crate::config::FnmConfig) -> String {
+        indoc!(
+            r#"
+                function _fnm_autoload_hook --on-variable PWD --description 'Change Node version on directory change'
+                    status --is-command-substitution; and return
+                    if test -f .node-version
+                        echo "fnm: Found .node-version"
+                        fnm use
+                    else if test -f .nvmrc
+                        echo "fnm: Found .nvmrc"
+                        fnm use
+                    end
+                end
+            "#
+        )
+        .into()
+    }
+}
diff --git a/src/shell/infer/mod.rs b/src/shell/infer/mod.rs
new file mode 100644
index 0000000..1bffc2d
--- /dev/null
+++ b/src/shell/infer/mod.rs
@@ -0,0 +1,11 @@
+#[cfg(unix)]
+pub mod unix;
+
+#[cfg(windows)]
+pub mod windows;
+
+#[derive(Debug)]
+struct ProcessInfo {
+    parent_pid: Option<u32>,
+    command: String,
+}
diff --git a/src/shell/infer/unix.rs b/src/shell/infer/unix.rs
new file mode 100644
index 0000000..4b58dce
--- /dev/null
+++ b/src/shell/infer/unix.rs
@@ -0,0 +1,92 @@
+#![cfg(unix)]
+
+use super::super::{Bash, Fish, PowerShell, Shell, Zsh};
+use std::io::{Error, ErrorKind};
+
+#[derive(Debug)]
+struct ProcessInfo {
+    parent_pid: Option<u32>,
+    command: String,
+}
+
+const MAX_ITERATIONS: u8 = 10;
+
+pub fn infer_shell() -> Option<Box<dyn Shell>> {
+    let mut pid = Some(std::process::id());
+    let mut visited = 0;
+
+    while pid != None && visited < MAX_ITERATIONS {
+        let process_info = get_process_info(pid.unwrap()).ok()?;
+
+        match process_info.command.as_str().trim_start_matches('-') {
+            "sh" | "bash" => return Some(Box::from(Bash)),
+            "zsh" => return Some(Box::from(Zsh)),
+            "fish" => return Some(Box::from(Fish)),
+            "pwsh" => return Some(Box::from(PowerShell)),
+            _ => (),
+        };
+
+        pid = process_info.parent_pid;
+        visited += 1;
+    }
+
+    None
+}
+
+fn get_process_info(pid: u32) -> std::io::Result<ProcessInfo> {
+    use std::io::{BufRead, BufReader};
+    use std::process::Command;
+
+    let buffer = Command::new("ps")
+        .arg("-o")
+        .arg("ppid,comm")
+        .arg(pid.to_string())
+        .stdout(std::process::Stdio::piped())
+        .spawn()?
+        .stdout
+        .ok_or_else(|| Error::from(ErrorKind::UnexpectedEof))?;
+
+    let mut lines = BufReader::new(buffer).lines();
+
+    // skip header line
+    lines
+        .next()
+        .ok_or_else(|| Error::from(ErrorKind::UnexpectedEof))??;
+
+    let line = lines
+        .next()
+        .ok_or_else(|| Error::from(ErrorKind::NotFound))??;
+
+    let mut parts = line.trim().split_whitespace();
+    let ppid = parts
+        .next()
+        .expect("Can't read the ppid from ps, should be the first item in the table");
+    let command = parts
+        .next()
+        .expect("Can't read the command from ps, should be the first item in the table");
+
+    Ok(ProcessInfo {
+        parent_pid: u32::from_str_radix(ppid, 10).ok(),
+        command: command.into(),
+    })
+}
+
+#[cfg(all(test, unix))]
+mod tests {
+    use super::*;
+    use pretty_assertions::assert_eq;
+    use std::process::{Command, Stdio};
+
+    #[test]
+    fn test_get_process_info() {
+        let subprocess = Command::new("bash")
+            .stdin(Stdio::piped())
+            .stdout(Stdio::piped())
+            .stderr(Stdio::piped())
+            .spawn()
+            .expect("Can't execute command");
+        let process_info = get_process_info(subprocess.id());
+        let parent_pid = process_info.ok().and_then(|x| x.parent_pid);
+        assert_eq!(parent_pid, Some(std::process::id()));
+    }
+}
diff --git a/src/shell/infer/windows.rs b/src/shell/infer/windows.rs
new file mode 100644
index 0000000..17ea46d
--- /dev/null
+++ b/src/shell/infer/windows.rs
@@ -0,0 +1,84 @@
+#![cfg(windows)]
+
+use super::super::{Bash, PowerShell, Shell, WindowsCmd};
+use serde::Deserialize;
+use std::collections::HashMap;
+
+#[derive(Deserialize, Debug)]
+pub struct ProcessInfo {
+    #[serde(rename = "ExecutablePath")]
+    executable_path: Option<std::path::PathBuf>,
+    #[serde(rename = "ParentProcessId")]
+    parent_pid: u32,
+    #[serde(rename = "ProcessId")]
+    pid: u32,
+}
+
+pub fn infer_shell() -> Option<Box<dyn Shell>> {
+    let process_map = get_process_map().ok()?;
+    let process_tree = get_process_tree(process_map, std::process::id());
+
+    for process in process_tree {
+        if let Some(exec_path) = process.executable_path {
+            match exec_path.file_name().and_then(|x| x.to_str()) {
+                Some("cmd.exe") => {
+                    return Some(Box::from(WindowsCmd));
+                }
+                Some("bash.exe") => {
+                    return Some(Box::from(Bash));
+                }
+                Some("powershell.exe") | Some("pwsh.exe") => {
+                    return Some(Box::from(PowerShell));
+                }
+                _ => {}
+            }
+        }
+    }
+
+    None
+}
+
+type ProcessMap = HashMap<u32, ProcessInfo>;
+
+pub fn get_process_tree(mut process_map: ProcessMap, pid: u32) -> Vec<ProcessInfo> {
+    let mut vec = vec![];
+    let mut current = process_map.remove(&pid);
+
+    while let Some(process) = current {
+        current = process_map.remove(&process.parent_pid);
+        vec.push(process);
+    }
+
+    vec
+}
+
+pub fn get_process_map() -> std::io::Result<ProcessMap> {
+    let stdout = std::process::Command::new("wmic")
+        .args(&[
+            "process",
+            "get",
+            "processid,parentprocessid,executablepath",
+            "/format:csv",
+        ])
+        .stdout(std::process::Stdio::piped())
+        .spawn()?
+        .stdout
+        .ok_or(std::io::Error::from(std::io::ErrorKind::UnexpectedEof))?;
+
+    let mut reader = csv::Reader::from_reader(stdout);
+    let hashmap: HashMap<_, _> = reader
+        .deserialize::<ProcessInfo>()
+        .filter_map(Result::ok)
+        .map(|x| (x.pid, x))
+        .collect();
+    Ok(hashmap)
+}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn test_me() {
+        let processes = super::get_process_map().unwrap();
+        assert!(processes.contains_key(&std::process::id()));
+    }
+}
diff --git a/src/shell/mod.rs b/src/shell/mod.rs
new file mode 100644
index 0000000..3cc35a1
--- /dev/null
+++ b/src/shell/mod.rs
@@ -0,0 +1,29 @@
+mod bash;
+mod fish;
+mod infer;
+mod powershell;
+mod windows_cmd;
+mod zsh;
+
+#[allow(clippy::module_inception)]
+mod shell;
+
+pub use bash::Bash;
+pub use fish::Fish;
+pub use powershell::PowerShell;
+pub use shell::{Shell, AVAILABLE_SHELLS};
+pub use windows_cmd::WindowsCmd;
+pub use zsh::Zsh;
+
+/// Always returns WindowsCmd (because this is what we support on Windows)
+#[cfg(windows)]
+pub fn infer_shell() -> Box<dyn Shell> {
+    let inferred = self::infer::windows::infer_shell();
+    inferred.expect("Can't infer shell")
+}
+
+/// Tries to infer shell or dies trying
+#[cfg(unix)]
+pub fn infer_shell() -> Box<dyn Shell> {
+    infer::unix::infer_shell().expect("Can't infer shell")
+}
diff --git a/src/shell/powershell.rs b/src/shell/powershell.rs
new file mode 100644
index 0000000..e451112
--- /dev/null
+++ b/src/shell/powershell.rs
@@ -0,0 +1,31 @@
+use super::Shell;
+use indoc::indoc;
+
+#[derive(Debug)]
+pub struct PowerShell;
+
+impl Shell for PowerShell {
+    fn path(&self, path: &std::path::PathBuf) -> String {
+        let current_path = std::env::var_os("PATH").expect("Can't read PATH env var");
+        let mut split_paths: Vec<_> = std::env::split_paths(&current_path).collect();
+        split_paths.insert(0, path.to_path_buf());
+        let new_path = std::env::join_paths(split_paths).expect("Can't join paths");
+        self.set_env_var("PATH", new_path.to_str().expect("Can't read PATH"))
+    }
+
+    fn set_env_var(&self, name: &str, value: &str) -> String {
+        format!(r#"$env:{} = "{}""#, name, value)
+    }
+
+    fn use_on_cd(&self, _config: &crate::config::FnmConfig) -> String {
+        indoc!(r#"
+            function Set-LocationWithFnm { param($path); Set-Location $path; If ((Test-Path .nvmrc) -Or (Test-Path .node-version)) { & fnm use } }
+            Set-Alias cd_with_fnm Set-LocationWithFnm -Force
+            Remove-Item alias:\cd
+            New-Alias cd Set-LocationWithFnm
+        "#).into()
+    }
+    fn into_structopt_shell(&self) -> clap::Shell {
+        clap::Shell::PowerShell
+    }
+}
diff --git a/src/shell/shell.rs b/src/shell/shell.rs
new file mode 100644
index 0000000..7239e5f
--- /dev/null
+++ b/src/shell/shell.rs
@@ -0,0 +1,36 @@
+use std::fmt::Debug;
+use std::path::PathBuf;
+
+pub trait Shell: Debug {
+    fn path(&self, path: &PathBuf) -> String;
+    fn set_env_var(&self, name: &str, value: &str) -> String;
+    fn use_on_cd(&self, config: &crate::config::FnmConfig) -> String;
+    fn into_structopt_shell(&self) -> structopt::clap::Shell;
+}
+
+#[cfg(windows)]
+pub const AVAILABLE_SHELLS: &[&str; 5] = &["cmd", "powershell", "bash", "zsh", "fish"];
+
+#[cfg(unix)]
+pub const AVAILABLE_SHELLS: &[&str; 4] = &["bash", "zsh", "fish", "powershell"];
+
+impl std::str::FromStr for Box<dyn Shell> {
+    type Err = String;
+
+    fn from_str(s: &str) -> Result<Box<dyn Shell>, Self::Err> {
+        match s {
+            "cmd" => Ok(Box::from(super::windows_cmd::WindowsCmd)),
+            "zsh" => Ok(Box::from(super::zsh::Zsh)),
+            "bash" => Ok(Box::from(super::bash::Bash)),
+            "fish" => Ok(Box::from(super::fish::Fish)),
+            "powershell" => Ok(Box::from(super::powershell::PowerShell)),
+            shell_type => Err(format!("I don't know the shell type of {:?}", shell_type)),
+        }
+    }
+}
+
+impl Into<structopt::clap::Shell> for Box<dyn Shell> {
+    fn into(self) -> structopt::clap::Shell {
+        self.into_structopt_shell()
+    }
+}
diff --git a/src/shell/windows_cmd/cd.cmd b/src/shell/windows_cmd/cd.cmd
new file mode 100644
index 0000000..a49c3a7
--- /dev/null
+++ b/src/shell/windows_cmd/cd.cmd
@@ -0,0 +1,10 @@
+@echo off
+cd %1
+if exist .nvmrc (
+    fnm use
+) else (
+    if exist .node-version (
+        fnm use
+    )
+)
+@echo on
\ No newline at end of file
diff --git a/src/shell/windows_cmd/mod.rs b/src/shell/windows_cmd/mod.rs
new file mode 100644
index 0000000..af60d71
--- /dev/null
+++ b/src/shell/windows_cmd/mod.rs
@@ -0,0 +1,40 @@
+use super::shell::Shell;
+use std::path::PathBuf;
+
+#[derive(Debug)]
+pub struct WindowsCmd;
+
+impl Shell for WindowsCmd {
+    fn into_structopt_shell(&self) -> structopt::clap::Shell {
+        panic!("Shell completion is not supported for Windows Command Prompt. Maybe try using PowerShell for a better experience?");
+    }
+
+    fn path(&self, path: &PathBuf) -> String {
+        let current_path = std::env::var_os("path").expect("Can't read PATH env var");
+        let mut split_paths: Vec<_> = std::env::split_paths(&current_path).collect();
+        split_paths.insert(0, path.to_path_buf());
+        let new_path = std::env::join_paths(split_paths).expect("Can't join paths");
+        format!("SET PATH={}", new_path.to_str().expect("Can't read PATH"))
+    }
+
+    fn set_env_var(&self, name: &str, value: &str) -> String {
+        format!("SET {}={}", name, value)
+    }
+
+    fn use_on_cd(&self, config: &crate::config::FnmConfig) -> String {
+        let path = config.base_dir_with_default().join("cd.cmd");
+        create_cd_file_at(&path).expect("Can't create cd.cmd file for use-on-cd");
+        format!(
+            "doskey cd={} $1",
+            path.to_str().expect("Can't read path to cd.cmd")
+        )
+    }
+}
+
+fn create_cd_file_at(path: &std::path::Path) -> std::io::Result<()> {
+    use std::io::Write;
+    let cmd_contents = include_bytes!("./cd.cmd");
+    let mut file = std::fs::File::create(path)?;
+    file.write_all(cmd_contents)?;
+    Ok(())
+}
diff --git a/src/shell/zsh.rs b/src/shell/zsh.rs
new file mode 100644
index 0000000..91c32d7
--- /dev/null
+++ b/src/shell/zsh.rs
@@ -0,0 +1,41 @@
+use super::shell::Shell;
+use indoc::indoc;
+use std::path::PathBuf;
+
+#[derive(Debug)]
+pub struct Zsh;
+
+impl Shell for Zsh {
+    fn into_structopt_shell(&self) -> structopt::clap::Shell {
+        structopt::clap::Shell::Zsh
+    }
+
+    fn path(&self, path: &PathBuf) -> String {
+        format!("export PATH={:?}:$PATH", path.to_str().unwrap())
+    }
+
+    fn set_env_var(&self, name: &str, value: &str) -> String {
+        format!("export {}={:?}", name, value)
+    }
+
+    fn use_on_cd(&self, _config: &crate::config::FnmConfig) -> String {
+        indoc!(
+            r#"
+                autoload -U add-zsh-hook
+                _fnm_autoload_hook () {
+                    if [[ -f .node-version && -r .node-version ]]; then
+                        echo "fnm: Found .node-version"
+                        fnm use
+                    elif [[ -f .nvmrc && -r .nvmrc ]]; then
+                        echo "fnm: Found .nvmrc"
+                        fnm use
+                    fi
+                }
+
+                add-zsh-hook chpwd _fnm_autoload_hook \
+                    && _fnm_autoload_hook
+            "#
+        )
+        .into()
+    }
+}
diff --git a/src/system_info.rs b/src/system_info.rs
new file mode 100644
index 0000000..e93e33c
--- /dev/null
+++ b/src/system_info.rs
@@ -0,0 +1,19 @@
+#[cfg(target_os = "macos")]
+pub fn platform_name() -> &'static str {
+    "darwin"
+}
+
+#[cfg(target_os = "linux")]
+pub fn platform_name() -> &'static str {
+    "linux"
+}
+
+#[cfg(target_pointer_width = "32")]
+pub fn platform_arch() -> &'static str {
+    "x86"
+}
+
+#[cfg(target_pointer_width = "64")]
+pub fn platform_arch() -> &'static str {
+    "x64"
+}
diff --git a/src/system_version.rs b/src/system_version.rs
new file mode 100644
index 0000000..bb74bc0
--- /dev/null
+++ b/src/system_version.rs
@@ -0,0 +1,11 @@
+use std::path::PathBuf;
+
+pub fn path() -> PathBuf {
+    let path_as_string = if cfg!(windows) {
+        "Z:/_fnm_/Nothing/Should/Be/Here/installation"
+    } else {
+        "/dev/null/installation"
+    };
+
+    PathBuf::from(path_as_string)
+}
diff --git a/src/user_version.rs b/src/user_version.rs
new file mode 100644
index 0000000..74f234c
--- /dev/null
+++ b/src/user_version.rs
@@ -0,0 +1,119 @@
+use crate::version::Version;
+
+#[derive(Clone, Debug)]
+pub enum UserVersion {
+    OnlyMajor(u64),
+    MajorMinor(u64, u64),
+    Full(Version),
+}
+
+impl UserVersion {
+    pub fn to_version<'a, T>(&self, available_versions: T) -> Option<&'a Version>
+    where
+        T: IntoIterator<Item = &'a Version>,
+    {
+        available_versions.into_iter().filter(|x| &self == x).max()
+    }
+
+    pub fn alias_name(&self) -> Option<String> {
+        match self {
+            Self::Full(version) => version.alias_name(),
+            _ => None,
+        }
+    }
+}
+
+impl PartialEq<Version> for UserVersion {
+    fn eq(&self, other: &Version) -> bool {
+        match (self, other) {
+            (Self::Full(a), b) if a == b => true,
+            (Self::Full(_), _) => false,
+            (_, Version::Bypassed) => false,
+            (_, Version::Lts(_)) => false,
+            (_, Version::Alias(_)) => false,
+            (Self::OnlyMajor(major), Version::Semver(other)) => *major == other.major,
+            (Self::MajorMinor(major, minor), Version::Semver(other)) => {
+                *major == other.major && *minor == other.minor
+            }
+        }
+    }
+}
+
+fn next_of<'a, T: std::str::FromStr, It: Iterator<Item = &'a str>>(i: &mut It) -> Option<T> {
+    let x = i.next()?;
+    T::from_str(x).ok()
+}
+
+impl std::fmt::Display for UserVersion {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Full(x) => x.fmt(f),
+            Self::OnlyMajor(major) => write!(f, "v{}.x.x", major),
+            Self::MajorMinor(major, minor) => write!(f, "v{}.{}.x", major, minor),
+        }
+    }
+}
+
+impl std::str::FromStr for UserVersion {
+    type Err = semver::SemVerError;
+    fn from_str(s: &str) -> Result<UserVersion, Self::Err> {
+        match Version::parse(s) {
+            Ok(v) => Ok(Self::Full(v)),
+            Err(e) => {
+                let mut parts = s.trim().split('.');
+                match (next_of::<u64, _>(&mut parts), next_of::<u64, _>(&mut parts)) {
+                    (Some(major), None) => Ok(Self::OnlyMajor(major)),
+                    (Some(major), Some(minor)) => Ok(Self::MajorMinor(major, minor)),
+                    _ => Err(e),
+                }
+            }
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_major_to_version() {
+        let expected = Version::parse("6.1.0").unwrap();
+        let versions = vec![
+            Version::parse("6.0.0").unwrap(),
+            Version::parse("6.0.1").unwrap(),
+            expected.clone(),
+            Version::parse("7.0.1").unwrap(),
+        ];
+        let result = UserVersion::OnlyMajor(6).to_version(&versions);
+
+        assert_eq!(result, Some(&expected));
+    }
+
+    #[test]
+    fn test_major_minor_to_version() {
+        let expected = Version::parse("6.0.1").unwrap();
+        let versions = vec![
+            Version::parse("6.0.0").unwrap(),
+            Version::parse("6.1.0").unwrap(),
+            expected.clone(),
+            Version::parse("7.0.1").unwrap(),
+        ];
+        let result = UserVersion::MajorMinor(6, 0).to_version(&versions);
+
+        assert_eq!(result, Some(&expected));
+    }
+
+    #[test]
+    fn test_semver_to_version() {
+        let expected = Version::parse("6.0.0").unwrap();
+        let versions = vec![
+            expected.clone(),
+            Version::parse("6.1.0").unwrap(),
+            Version::parse("6.0.1").unwrap(),
+            Version::parse("7.0.1").unwrap(),
+        ];
+        let result = UserVersion::Full(expected.clone()).to_version(&versions);
+
+        assert_eq!(result, Some(&expected));
+    }
+}
diff --git a/src/version.rs b/src/version.rs
new file mode 100644
index 0000000..6a6d1b6
--- /dev/null
+++ b/src/version.rs
@@ -0,0 +1,99 @@
+use crate::lts::LtsType;
+use std::str::FromStr;
+
+#[derive(Debug, PartialEq, PartialOrd, Eq, Ord, Clone)]
+pub enum Version {
+    Semver(semver::Version),
+    Lts(LtsType),
+    Alias(String),
+    Bypassed,
+}
+
+fn first_letter_is_number(s: &str) -> bool {
+    s.chars().next().map(|x| x.is_digit(10)).unwrap_or(false)
+}
+
+impl Version {
+    pub fn parse<S: AsRef<str>>(version_str: S) -> Result<Self, semver::SemVerError> {
+        let lowercased = version_str.as_ref().to_lowercase();
+        if lowercased == "system" {
+            Ok(Self::Bypassed)
+        } else if lowercased.starts_with("lts-") || lowercased.starts_with("lts/") {
+            let lts_type = LtsType::from(&lowercased[4..]);
+            Ok(Self::Lts(lts_type))
+        } else if first_letter_is_number(lowercased.trim_start_matches('v')) {
+            let version_plain = lowercased.trim_start_matches('v');
+            let sver = semver::Version::parse(&version_plain)?;
+            Ok(Self::Semver(sver))
+        } else {
+            Ok(Self::Alias(lowercased))
+        }
+    }
+
+    pub fn alias_name(&self) -> Option<String> {
+        match self {
+            l @ Self::Lts(_) => Some(l.v_str()),
+            l @ Self::Alias(_) => Some(l.v_str()),
+            _ => None,
+        }
+    }
+
+    pub fn v_str(&self) -> String {
+        format!("{}", self)
+    }
+
+    pub fn installation_path(
+        &self,
+        config: &crate::config::FnmConfig,
+    ) -> Option<std::path::PathBuf> {
+        match self {
+            Self::Bypassed => None,
+            v @ Self::Lts(_) | v @ Self::Alias(_) => {
+                Some(config.aliases_dir().join(v.alias_name().unwrap()))
+            }
+            v @ Self::Semver(_) => Some(
+                config
+                    .installations_dir()
+                    .join(v.v_str())
+                    .join("installation"),
+            ),
+        }
+    }
+}
+
+impl<'de> serde::Deserialize<'de> for Version {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: serde::Deserializer<'de>,
+    {
+        let version_str = String::deserialize(deserializer)?;
+        Version::parse(version_str).map_err(serde::de::Error::custom)
+    }
+}
+
+impl std::fmt::Display for Version {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Bypassed => write!(f, "system"),
+            Self::Lts(lts) => write!(f, "lts-{}", lts),
+            Self::Semver(semver) => write!(f, "v{}", semver),
+            Self::Alias(alias) => write!(f, "{}", alias),
+        }
+    }
+}
+
+impl FromStr for Version {
+    type Err = semver::SemVerError;
+    fn from_str(s: &str) -> Result<Version, Self::Err> {
+        Self::parse(s)
+    }
+}
+
+impl PartialEq<semver::Version> for Version {
+    fn eq(&self, other: &semver::Version) -> bool {
+        match self {
+            Self::Bypassed | Self::Lts(_) | Self::Alias(_) => false,
+            Self::Semver(v) => v == other,
+        }
+    }
+}
diff --git a/src/version_files.rs b/src/version_files.rs
new file mode 100644
index 0000000..e951e6f
--- /dev/null
+++ b/src/version_files.rs
@@ -0,0 +1,40 @@
+use crate::user_version::UserVersion;
+use encoding_rs_io::DecodeReaderBytes;
+use log::info;
+use std::io::Read;
+use std::path::Path;
+use std::str::FromStr;
+
+const PATH_PARTS: [&str; 2] = [".nvmrc", ".node-version"];
+
+pub fn get_user_version_from_file(path: impl AsRef<Path>) -> Option<UserVersion> {
+    let path = path.as_ref();
+
+    for path_part in PATH_PARTS.iter() {
+        let new_path = path.join(path_part);
+        info!(
+            "Looking for version file in {}. exists? {}",
+            new_path.display(),
+            new_path.exists()
+        );
+        if let Ok(file) = std::fs::File::open(new_path) {
+            let version = {
+                let mut reader = DecodeReaderBytes::new(file);
+                let mut version = String::new();
+                reader.read_to_string(&mut version).map(|_| version)
+            };
+
+            match version {
+                Err(err) => info!("Can't read file: {}", err),
+                Ok(version) => {
+                    info!("Found string {:?}  in version file", version);
+                    if let Ok(ver) = UserVersion::from_str(version.trim()) {
+                        return Some(ver);
+                    }
+                }
+            }
+        }
+    }
+
+    None
+}
diff --git a/test/SmokeTest.re b/test/SmokeTest.re
deleted file mode 100644
index 3d8b287..0000000
--- a/test/SmokeTest.re
+++ /dev/null
@@ -1,17 +0,0 @@
-open TestFramework;
-
-describe("Smoke test", ({test, _}) => {
-  test("Tests run!", ({expect}) =>
-    expect.int(1).toBe(1)
-  );
-
-  test("Get version", ({expect}) => {
-    let version = run([|"--version"|]);
-    expect.string(version |> String.trim).toMatch("^\\d+.\\d+.\\d+$");
-  });
-
-  test("env", ({expect}) => {
-    let env = run([|"env", "--shell=bash"|]) |> redactSfwRoot;
-    expect.string(env).toMatchSnapshot();
-  });
-});
diff --git a/test/TestFnm.re b/test/TestFnm.re
deleted file mode 100644
index f98c173..0000000
--- a/test/TestFnm.re
+++ /dev/null
@@ -1,7 +0,0 @@
-include SmokeTest;
-include TestSemver;
-include TestFs;
-include TestUninstall;
-include TestListRemote;
-
-TestFramework.cli();
diff --git a/test/TestFramework.re b/test/TestFramework.re
deleted file mode 100644
index a5b6078..0000000
--- a/test/TestFramework.re
+++ /dev/null
@@ -1,37 +0,0 @@
-let projectDir = Sys.getcwd();
-let tmpDir = Filename.concat(projectDir, ".fnmTmp");
-
-include Rely.Make({
-  let config =
-    Rely.TestFrameworkConfig.initialize({
-      snapshotDir:
-        Filename.concat(
-          projectDir,
-          Filename.concat("test", "__snapshots__"),
-        ),
-      projectDir,
-    });
-});
-
-let run = args => {
-  let arguments =
-    args
-    |> Array.append([|"./_esy/default/build/default/executable/FnmApp.exe"|]);
-  let env =
-    Unix.environment()
-    |> Array.append([|
-         Printf.sprintf("%s=%s", Fnm.Config.FNM_DIR.name, tmpDir),
-         "FORCE_COLOR=false",
-       |]);
-  let result =
-    Lwt_process.pread_chars(~env, ("", arguments)) |> Lwt_stream.to_string;
-  Lwt_main.run(result);
-};
-
-let clearTmpDir = () => {
-  let _ = Lwt_process.pread(("", [|"rm", "-rf", tmpDir|])) |> Lwt_main.run;
-  ();
-};
-
-let redactSfwRoot =
-  Str.global_replace(Str.regexp_string(tmpDir), "<sfwRoot>");
diff --git a/test/TestFs.re b/test/TestFs.re
deleted file mode 100644
index b292071..0000000
--- a/test/TestFs.re
+++ /dev/null
@@ -1,61 +0,0 @@
-open TestFramework;
-open Fnm;
-
-let get_tempdir = prefix => {
-  Printf.sprintf(
-    "fnm-test-%s-%s",
-    prefix,
-    Unix.time() |> int_of_float |> string_of_int,
-  )
-  |> Filename.concat(Filename.get_temp_dir_name());
-};
-
-describe("TestSemver", ({test, describe, _}) => {
-  describe("listDirRecursively", ({test, _}) => {
-    test("list files and directories", ({expect, _}) => {
-      let xs = Fs.listDirRecursively("feature_tests") |> Lwt_main.run;
-      expect.list(xs).toContainEqual(
-        Fs.File("feature_tests/multishell/run.sh"),
-      );
-      expect.list(xs).toContainEqual(Fs.Dir("feature_tests/multishell"));
-      expect.list(xs).toContainEqual(Fs.Dir("feature_tests"));
-    });
-
-    test("works with symlinks", ({expect, _}) => {
-      let tmpdir = get_tempdir("symlinks");
-      let fileDir = Filename.concat(tmpdir, "a/b/c/d/e/f/g");
-      let filePath = Filename.concat(fileDir, "file");
-      Sys.command("mkdir -p " ++ fileDir) |> ignore;
-      Sys.command("touch " ++ filePath) |> ignore;
-      Sys.command("ln -s " ++ filePath ++ " " ++ filePath ++ "_link")
-      |> ignore;
-      Sys.command(
-        "ln -s " ++ filePath ++ "_not_found " ++ filePath ++ "_link_not_found",
-      )
-      |> ignore;
-
-      let xs = Fs.listDirRecursively(tmpdir) |> Lwt_main.run;
-      expect.list(xs).toContainEqual(Fs.File(filePath ++ "_link"));
-      expect.list(xs).toContainEqual(
-        Fs.File(filePath ++ "_link_not_found"),
-      );
-      expect.list(xs).toContainEqual(Fs.File(filePath));
-      expect.list(xs).toContainEqual(Fs.Dir(fileDir));
-    });
-  });
-
-  test("rmdir", ({expect, _}) => {
-    let tmpdir = get_tempdir("rmdir");
-    let fileDir = Filename.concat(tmpdir, "a/b/c/d/e/f/g");
-    let filePath = Filename.concat(fileDir, "file");
-
-    Sys.command("mkdir -p " ++ fileDir) |> ignore;
-    Sys.command("touch " ++ filePath) |> ignore;
-    Unix.symlink(filePath, filePath ++ "_link");
-    Fs.rmdir(tmpdir) |> Lwt_main.run;
-
-    let remainingFiles = Fs.listDirRecursively(tmpdir) |> Lwt_main.run;
-
-    expect.list(remainingFiles).toBeEmpty();
-  });
-});
diff --git a/test/TestListRemote.re b/test/TestListRemote.re
deleted file mode 100644
index b1f9cda..0000000
--- a/test/TestListRemote.re
+++ /dev/null
@@ -1,116 +0,0 @@
-open TestFramework;
-
-let allVersions6 = [
-  "v6.0.0",
-  "v6.1.0",
-  "v6.2.0",
-  "v6.2.1",
-  "v6.2.2",
-  "v6.3.0",
-  "v6.3.1",
-  "v6.4.0",
-  "v6.5.0",
-  "v6.6.0",
-  "v6.7.0",
-  "v6.8.0",
-  "v6.8.1",
-  "v6.9.0",
-  "v6.9.1",
-  "v6.9.2",
-  "v6.9.3",
-  "v6.9.4",
-  "v6.9.5",
-  "v6.10.0",
-  "v6.10.1",
-  "v6.10.2",
-  "v6.10.3",
-  "v6.11.0",
-  "v6.11.1",
-  "v6.11.2",
-  "v6.11.3",
-  "v6.11.4",
-  "v6.11.5",
-  "v6.12.0",
-  "v6.12.1",
-  "v6.12.2",
-  "v6.12.3",
-  "v6.13.0",
-  "v6.13.1",
-  "v6.14.0",
-  "v6.14.1",
-  "v6.14.2",
-  "v6.14.3",
-  "v6.14.4",
-  "v6.15.0",
-  "v6.15.1",
-  "v6.16.0",
-  "v6.17.0",
-  "v6.17.1",
-];
-
-let allVersions6_11 = [
-  "v6.11.0",
-  "v6.11.1",
-  "v6.11.2",
-  "v6.11.3",
-  "v6.11.4",
-  "v6.11.5",
-];
-
-describe("List Remote", ({test, _}) => {
-  let versionRegExp = Str.regexp(".*[0-9]+\\.[0-9]+\\.[0-9]+\\|.*latest-*");
-
-  let filterVersionNumbers = response =>
-    response
-    |> String.split_on_char('\n')
-    |> List.filter(s => Str.string_match(versionRegExp, s, 0))
-    |> List.map(s => Str.replace_first(Str.regexp("\\*"), "", s))
-    |> List.map(String.trim);
-
-  let runAndFilterVersionNumbers = args => run(args) |> filterVersionNumbers;
-
-  test("Should display remote versions matching a major version", ({expect}) => {
-    let versionNumbers = runAndFilterVersionNumbers([|"ls-remote", "6"|]);
-
-    expect.lines(versionNumbers).toEqualLines(allVersions6);
-  });
-  test(
-    "Should display remote versions matching a major and minor version",
-    ({expect}) => {
-    let versionNumbers = runAndFilterVersionNumbers([|"ls-remote", "6.11"|]);
-
-    expect.lines(versionNumbers).toEqualLines(allVersions6_11);
-  });
-  test(
-    "Should display remote version matching a specific version", ({expect}) => {
-    let versionNumbers =
-      runAndFilterVersionNumbers([|"ls-remote", "6.11.3"|]);
-
-    expect.int(versionNumbers |> List.length).toBe(1);
-    expect.lines(versionNumbers).toEqual("v6.11.3");
-  });
-  test("Should display latest remote version", ({expect}) => {
-    let versionNumbers =
-      runAndFilterVersionNumbers([|"ls-remote", "latest"|]);
-
-    expect.int(versionNumbers |> List.length).toBe(1);
-    expect.lines(versionNumbers).toEqual("latest");
-  });
-
-  test("Should display latest specific remote version", ({expect}) => {
-    let versionNumbers =
-      runAndFilterVersionNumbers([|"ls-remote", "latest-v6"|]);
-
-    expect.int(versionNumbers |> List.length).toBe(1);
-    expect.lines(versionNumbers).toEqual("latest-v6.x");
-  });
-  test(
-    "Should display an error message if version does not exist", ({expect}) => {
-    let result = run([|"ls-remote", "190385"|]);
-
-    let versionNumbers = result |> filterVersionNumbers;
-
-    expect.int(versionNumbers |> List.length).toBe(0);
-    expect.string(result).toMatch(".*No versions found.*");
-  });
-});
diff --git a/test/TestSemver.re b/test/TestSemver.re
deleted file mode 100644
index 8f39c6a..0000000
--- a/test/TestSemver.re
+++ /dev/null
@@ -1,27 +0,0 @@
-open TestFramework;
-
-describe("Semver", ({test, _}) => {
-  open Fnm;
-
-  test("parses a string", ({expect, _}) => {
-    let x = Semver.fromString("1.2.3");
-    expect.equal(x, Some(Semver.make(~major=1, ~minor=2, ~patch=3)));
-  });
-
-  test("returns none on invalid semver", ({expect, _}) => {
-    let x = Semver.fromString("x1.2.3");
-    expect.equal(x, None);
-  });
-
-  test("compare versions", ({expect}) => {
-    let semver1 = Semver.make(~major=1, ~minor=2, ~patch=0);
-    let semver2 = Semver.make(~major=1, ~minor=2, ~patch=3);
-    let semver3 = Semver.make(~major=1, ~minor=3, ~patch=3);
-    let semver4 = Semver.make(~major=4, ~minor=3, ~patch=3);
-
-    let sorted =
-      List.sort(Semver.compare, [semver1, semver2, semver4, semver3]);
-
-    expect.list(sorted).toEqual([semver1, semver2, semver3, semver4]);
-  });
-});
diff --git a/test/TestUninstall.re b/test/TestUninstall.re
deleted file mode 100644
index 85eeb1b..0000000
--- a/test/TestUninstall.re
+++ /dev/null
@@ -1,54 +0,0 @@
-open TestFramework;
-
-let installVersion = version => run([|"install", version|]);
-let uninstallVersion = version => run([|"uninstall", version|]);
-
-let isVersionInstalled = version =>
-  run([|"ls"|])
-  |> String.split_on_char('\n')
-  |> List.exists(v => v == "* v" ++ version);
-
-describe("Uninstall", ({test, _}) => {
-  test("Should be possible to uninstall a specific version", ({expect, _}) => {
-    let version = "6.0.0";
-    let _ = installVersion(version);
-    let response = uninstallVersion(version);
-    expect.string(response).toMatch(
-      ".*v" ++ version ++ ".* has correctly been removed.*",
-    );
-    expect.bool(isVersionInstalled(version)).toBeFalse();
-  });
-  test(
-    "Should print out a message if multiple versions match the prefix",
-    ({expect, _}) => {
-    let v1 = "6.10.0";
-    let v2 = "6.11.0";
-    let _ = installVersion(v1);
-    let _ = installVersion(v2);
-    let response =
-      uninstallVersion("6")
-      |> String.split_on_char('\n')
-      |> String.concat(" ");
-    expect.string(response).toMatch("multiple versions");
-    expect.string(response).toMatch(" v" ++ v1 ++ " ");
-    expect.string(response).toMatch(" v" ++ v2 ++ " ");
-    expect.bool(isVersionInstalled(v1)).toBeTrue();
-    expect.bool(isVersionInstalled(v2)).toBeTrue();
-    clearTmpDir();
-  });
-  test(
-    "Should be able to uninstall with a prefix if only one version match",
-    ({expect, _}) => {
-    let v1 = "6.10.0";
-    let v2 = "6.11.0";
-    let _ = installVersion(v1);
-    let _ = installVersion(v2);
-    let response = uninstallVersion("6.10");
-    expect.string(response).toMatch(
-      ".*v" ++ v1 ++ ".* has correctly been removed.*",
-    );
-    expect.bool(isVersionInstalled(v1)).toBeFalse();
-    expect.bool(isVersionInstalled(v2)).toBeTrue();
-    clearTmpDir();
-  });
-});
diff --git a/test/__snapshots__/Smoke_test.4d362c3c.0.snapshot b/test/__snapshots__/Smoke_test.4d362c3c.0.snapshot
deleted file mode 100644
index 7f88166..0000000
--- a/test/__snapshots__/Smoke_test.4d362c3c.0.snapshot
+++ /dev/null
@@ -1,7 +0,0 @@
-Smoke test › env
-export PATH=<sfwRoot>/current/bin:$PATH
-export FNM_MULTISHELL_PATH=<sfwRoot>/current
-export FNM_DIR=<sfwRoot>/
-export FNM_NODE_DIST_MIRROR=https://nodejs.org/dist
-export FNM_LOGLEVEL=info
-
diff --git a/test/dune b/test/dune
deleted file mode 100644
index a209695..0000000
--- a/test/dune
+++ /dev/null
@@ -1,12 +0,0 @@
-
-; !!!! This dune file is generated from the package.json file by pesy. If you modify it by hand
-; !!!! your changes will be undone! Instead, edit the package.json and then rerun 'esy pesy' at the project root.
-; !!!! If you want to stop using pesy and manage this file by hand, change package.json's 'esy.build' command to: refmterr dune build -p  fnm
-(executable
-   ; The entrypoint module
-   (name TestFnm)  ;  From package.json main field
-   ; The name of the executable (runnable via esy x TestFnm.exe) 
-   (public_name TestFnm.exe)  ;  From package.json name field
-   (libraries  fnm.lib rely.lib ) ;  From package.json require field (array of strings)
-   (ocamlopt_flags ( -linkall -g ))  ; From package.json ocamloptFlags field
-)
\ No newline at end of file
diff --git a/tests/e2e.rs b/tests/e2e.rs
new file mode 100644
index 0000000..e36dc9f
--- /dev/null
+++ b/tests/e2e.rs
@@ -0,0 +1,4 @@
+#[macro_use]
+mod shellcode;
+
+mod feature_tests;
diff --git a/tests/feature_tests/aliases.rs b/tests/feature_tests/aliases.rs
new file mode 100644
index 0000000..355832d
--- /dev/null
+++ b/tests/feature_tests/aliases.rs
@@ -0,0 +1,28 @@
+use crate::shellcode::*;
+
+fn installed_versions() -> Call {
+    Call::new("fnm", vec!["ls"])
+}
+
+test_shell!(Bash, Zsh, Fish, PowerShell; {
+    EvalFnmEnv::default()
+        .then(Call::new("fnm", vec!["install", "6.11.3"]))
+        .then(Call::new("fnm", vec!["install", "8.11.3"]))
+        .then(Call::new("fnm", vec!["alias", "8.11", "oldie"]))
+        .then(Call::new("fnm", vec!["alias", "6", "older"]))
+        .then(Call::new("fnm", vec!["default", "older"]))
+        .then(OutputContains::new(
+            OutputContains::new(installed_versions(), "8.11.3"),
+            "oldie",
+        ))
+        .then(OutputContains::new(
+            OutputContains::new(OutputContains::new(installed_versions(), "6.11.3"), "older"),
+            "default",
+        ))
+        .then(Call::new("fnm", vec!["use", "older"]))
+        .then(test_node_version("v6.11.3"))
+        .then(Call::new("fnm", vec!["use", "oldie"]))
+        .then(test_node_version("v8.11.3"))
+        .then(Call::new("fnm", vec!["use", "default"]))
+        .then(test_node_version("v6.11.3"))
+});
diff --git a/tests/feature_tests/current.rs b/tests/feature_tests/current.rs
new file mode 100644
index 0000000..88085ad
--- /dev/null
+++ b/tests/feature_tests/current.rs
@@ -0,0 +1,28 @@
+test_shell!(Bash, Zsh, Fish, PowerShell, WinCmd; {
+    EvalFnmEnv::default()
+        .then(ExpectCommandOutput::new(
+            Call::new("fnm", vec!["current"]),
+            "none",
+            "currently activated version",
+        ))
+        .then(Call::new("fnm", vec!["install", "v8.11.3"]))
+        .then(Call::new("fnm", vec!["install", "v10.10.0"]))
+        .then(Call::new("fnm", vec!["use", "v8.11.3"]))
+        .then(ExpectCommandOutput::new(
+            Call::new("fnm", vec!["current"]),
+            "v8.11.3",
+            "currently activated version",
+        ))
+        .then(Call::new("fnm", vec!["use", "v10.10.0"]))
+        .then(ExpectCommandOutput::new(
+            Call::new("fnm", vec!["current"]),
+            "v10.10.0",
+            "currently activated version",
+        ))
+        .then(Call::new("fnm", vec!["use", "system"]))
+        .then(ExpectCommandOutput::new(
+            Call::new("fnm", vec!["current"]),
+            "system",
+            "currently activated version",
+        ))
+});
diff --git a/tests/feature_tests/mod.rs b/tests/feature_tests/mod.rs
new file mode 100644
index 0000000..577216f
--- /dev/null
+++ b/tests/feature_tests/mod.rs
@@ -0,0 +1,201 @@
+mod aliases;
+mod current;
+
+use crate::shellcode::*;
+
+mod basic {
+    test_shell!(Zsh, Bash, Fish, PowerShell, WinCmd; {
+        EvalFnmEnv::default()
+            .then(Call::new("fnm", vec!["install", "v8.11.3"]))
+            .then(Call::new("fnm", vec!["use", "v8.11.3"]))
+            .then(test_node_version("v8.11.3"))
+    });
+}
+
+mod nvmrc {
+    test_shell!(Zsh, Bash, Fish, PowerShell, WinCmd; {
+        EvalFnmEnv::default()
+            .then(WriteFile::new(".nvmrc", "v8.11.3"))
+            .then(Call::new("fnm", vec!["install"]))
+            .then(Call::new("fnm", vec!["use"]))
+            .then(test_node_version("v8.11.3"))
+    });
+}
+
+mod multishell {
+    test_shell!(Zsh, Bash, Fish, PowerShell; {
+        EvalFnmEnv::default()
+            .then(Call::new("fnm", vec!["install", "v8.11.3"]))
+            .then(Call::new("fnm", vec!["install", "v11.9.0"]))
+            .then(Call::new("fnm", vec!["use", "v8.11.3"]))
+            .then(SubShell::new(
+                DieOnErrors
+                    .then(EvalFnmEnv::default())
+                    .then(Call::new("fnm", vec!["use", "11"]))
+                    .then(test_node_version("v11.9.0")),
+            ))
+            .then(test_node_version("v8.11.3"))
+    });
+}
+
+mod use_on_cd_nvmrc {
+    test_shell!(Zsh, Bash, Fish, PowerShell; {
+        EvalFnmEnv::default()
+            .use_on_cd(true)
+            .then(Call::new("mkdir", vec!["inner_path"]))
+            .then(WriteFile::new("inner_path/.nvmrc", "v8.11.3"))
+            .then(Call::new("fnm", vec!["install", "v8.11.3"]))
+            .then(Call::new("cd", vec!["inner_path"]))
+            .then(test_node_version("v8.11.3"))
+    });
+}
+
+mod use_on_cd_dot_node_version {
+    test_shell!(Zsh, Bash, Fish, PowerShell; {
+        EvalFnmEnv::default()
+            .use_on_cd(true)
+            .then(Call::new("mkdir", vec!["inner_path"]))
+            .then(WriteFile::new("inner_path/.node-version", "v8.11.3"))
+            .then(Call::new("fnm", vec!["install", "v8.11.3"]))
+            .then(Call::new("cd", vec!["inner_path"]))
+            .then(test_node_version("v8.11.3"))
+    });
+}
+
+// mod node_dist_mirror {
+// test_shell!(Zsh, Bash, Fish, PowerShell, {
+//     EvalFnmEnv::default()
+//         .node_dist_mirror(Some("https://npm.taobao.org/mirrors/node"))
+//         .then(Call::new("fnm", vec!["install", "v8.11.3"]))
+//         .then(Call::new("fnm", vec!["use", "v8.11.3"]))
+//         .then(test_node_version("v8.11.3"))
+// });
+// }
+
+mod exec {
+    test_shell!(Zsh, Bash, Fish, PowerShell, WinCmd; {
+        EvalFnmEnv::default()
+            .then(WriteFile::new(".nvmrc", "v8.10.0"))
+            .then(Call::new("fnm", vec!["install"]))
+            .then(Call::new("fnm", vec!["install", "v6.10.0"]))
+            .then(Call::new("fnm", vec!["install", "v10.10.0"]))
+            .then(ExpectCommandOutput::new(
+                Call::new("fnm", vec!["exec", "--", "node", "-v"]),
+                "v8.10.0",
+                "version file exec",
+            ))
+            .then(ExpectCommandOutput::new(
+                Call::new("fnm", vec!["exec", "--using=6", "--", "node", "-v"]),
+                "v6.10.0",
+                "exec:6 node -v",
+            ))
+            .then(ExpectCommandOutput::new(
+                Call::new("fnm", vec!["exec", "--using=10", "--", "node", "-v"]),
+                "v10.10.0",
+                "exec:6 node -v",
+            ))
+    });
+}
+
+mod existing_installation {
+    test_shell!(Bash, Zsh, Fish, PowerShell; {
+        EvalFnmEnv::default()
+            .then(Call::new("fnm", vec!["install", "v8.11.3"]))
+            .then(OutputContains::new(
+                IgnoreErrors::new(GetStderr::new(Call::new("fnm", vec!["install", "v8.11.3"]))),
+                "already installed",
+            ))
+    });
+}
+
+mod system_node {
+    test_shell!(Bash, Zsh, Fish, PowerShell; |path: &std::path::Path| {
+        use std::io::Write;
+        let custom_node_dir = path.join("bin");
+        std::fs::create_dir(&custom_node_dir).unwrap();
+        std::fs::write(custom_node_dir.join("node.cmd"), b"echo custom node").unwrap();
+        let mut f = std::fs::File::create(custom_node_dir.join("node")).unwrap();
+        #[cfg(unix)]
+        {
+            use std::os::unix::fs::PermissionsExt;
+            let mut permissions = f.metadata().unwrap().permissions();
+            permissions.set_mode(0o766);
+            f.set_permissions(permissions).expect("Can't set file permissions");
+        }
+        writeln!(f, "#!/bin/sh").expect("Can't write file");
+        writeln!(f, r#"echo "custom node""#).expect("Can't write file");
+
+        EvalFnmEnv::default()
+            .then(Call::new("fnm", vec!["install", "10"]))
+            .then(Call::new("fnm", vec!["use", "10"]))
+            .then(Call::new("fnm", vec!["use", "system"]))
+            .then(test_node_version("custom node"))
+    });
+}
+
+mod use_nvmrc_lts {
+    test_shell!(Bash, Zsh, Fish, PowerShell; {
+        EvalFnmEnv::default()
+            .then(WriteFile::new(".nvmrc", "lts/dubnium"))
+            .then(Call::new("fnm", vec!["install"]))
+            .then(Call::new("fnm", vec!["use"]))
+            .then(OutputContains::new(Call::new("fnm", vec!["ls"]), "lts-dubnium"))
+    });
+}
+
+mod partial_semver {
+    test_shell!(Bash, Zsh, Fish, PowerShell, WinCmd; {
+        EvalFnmEnv::default()
+            .then(Call::new("fnm", vec!["install", "6"])) // unsupported version, no new versions should be issued
+            .then(Call::new("fnm", vec!["use", "6"]))
+            .then(test_node_version("v6.17.1"))
+    });
+}
+
+mod log_level_quiet {
+    test_shell!(Bash, Zsh, Fish, PowerShell; {
+        EvalFnmEnv::default()
+            .log_level(Some("quiet"))
+            .then(ExpectCommandOutput::new(Call::new("fnm", vec!["install", "v8.11.3"]), "", "fnm install"))
+            .then(ExpectCommandOutput::new(Call::new("fnm", vec!["use", "v8.11.3"]), "", "fnm use"))
+            .then(ExpectCommandOutput::new(Call::new("fnm", vec!["alias", "v8.11.3", "something"]), "", "fnm alias"))
+    });
+}
+
+mod log_level_error {
+    test_shell!(Bash, Zsh, Fish, PowerShell; {
+        EvalFnmEnv::default()
+            .log_level(Some("error"))
+            .then(ExpectCommandOutput::new(Call::new("fnm", vec!["install", "v8.11.3"]).then(Call::new("echo", vec!["empty"])), "empty", "fnm install"))
+            .then(ExpectCommandOutput::new(Call::new("fnm", vec!["use", "v8.11.3"]).then(Call::new("echo", vec!["empty"])), "empty", "fnm use"))
+            .then(ExpectCommandOutput::new(Call::new("fnm", vec!["alias", "v8.11.3", "something"]).then(Call::new("echo", vec!["empty"])), "empty", "fnm alias"))
+            .then(OutputContains::new(IgnoreErrors::new(GetStderr::new(Call::new("fnm", vec!["alias", "abcd", "efg"]))), "Can't find requested version"))
+    });
+}
+
+mod list_local_with_nothing_installed {
+    test_shell!(Bash, Zsh, Fish, PowerShell, WinCmd; {
+        EvalFnmEnv::default()
+            .then(Call::new("fnm", vec!["ls"]))
+    });
+}
+
+mod latest_lts {
+    test_shell!(Bash, Zsh, Fish, PowerShell; {
+        EvalFnmEnv::default()
+            .then(Call::new("fnm", vec!["install", "--lts"]))
+            .then(OutputContains::new(Call::new("fnm", vec!["ls"]), "lts-latest"))
+            .then(Call::new("fnm", vec!["use", "'lts/*'"]))
+    });
+}
+
+mod matching_dotfiles {
+    test_shell!(Bash, Zsh, Fish, PowerShell, WinCmd; {
+        EvalFnmEnv::default()
+            .then(WriteFile::new(".nvmrc", "11.10.0"))
+            .then(WriteFile::new(".node-version", "11.10.0"))
+            .then(Call::new("fnm", vec!["install"]))
+            .then(Call::new("fnm", vec!["use"]))
+            .then(test_node_version("v11.10.0"))
+    });
+}
diff --git a/tests/shellcode/call.rs b/tests/shellcode/call.rs
new file mode 100644
index 0000000..abe5b12
--- /dev/null
+++ b/tests/shellcode/call.rs
@@ -0,0 +1,28 @@
+use super::expression::Expression;
+use super::shell::Shell;
+use std::fmt::Write;
+
+#[derive(Debug)]
+pub(crate) struct Call {
+    binary: Box<&'static str>,
+    args: Vec<&'static str>,
+}
+
+impl Call {
+    pub(crate) fn new(binary: &'static str, args: Vec<&'static str>) -> Self {
+        Self {
+            binary: Box::from(binary),
+            args,
+        }
+    }
+}
+
+impl<S: Shell> Expression<S> for Call {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        write!(writer, "{}", self.binary)?;
+        for arg in &self.args {
+            write!(writer, " {}", arg)?;
+        }
+        Ok(())
+    }
+}
diff --git a/tests/shellcode/die_on_errors.rs b/tests/shellcode/die_on_errors.rs
new file mode 100644
index 0000000..31a2ffd
--- /dev/null
+++ b/tests/shellcode/die_on_errors.rs
@@ -0,0 +1,43 @@
+use super::expression::Expression;
+use super::shell::{Bash, Fish, PowerShell, WinCmd, Zsh};
+use indoc::writedoc;
+use std::fmt::Write;
+
+#[derive(Debug)]
+pub(crate) struct DieOnErrors;
+
+impl Expression<Bash> for DieOnErrors {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        writedoc!(
+            writer,
+            r#"
+                set -e
+                shopt -s expand_aliases
+            "#
+        )
+    }
+}
+
+impl Expression<Zsh> for DieOnErrors {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        write!(writer, "set -e")
+    }
+}
+
+impl Expression<Fish> for DieOnErrors {
+    fn write_shell(&self, _writer: &mut impl Write) -> std::fmt::Result {
+        Ok(())
+    }
+}
+
+impl Expression<PowerShell> for DieOnErrors {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        write!(writer, r#"$ErrorActionPreference = "Stop""#)
+    }
+}
+
+impl Expression<WinCmd> for DieOnErrors {
+    fn write_shell(&self, _writer: &mut impl Write) -> std::fmt::Result {
+        Ok(())
+    }
+}
diff --git a/tests/shellcode/eval_fnm_env.rs b/tests/shellcode/eval_fnm_env.rs
new file mode 100644
index 0000000..fd1d654
--- /dev/null
+++ b/tests/shellcode/eval_fnm_env.rs
@@ -0,0 +1,63 @@
+use super::expression::Expression;
+use super::shell::{Bash, Fish, PowerShell, WinCmd, Zsh};
+use std::fmt::Write;
+
+#[derive(Debug, Default)]
+pub(crate) struct EvalFnmEnv {
+    use_on_cd: bool,
+    log_level: Option<&'static str>,
+}
+
+impl EvalFnmEnv {
+    pub(crate) fn use_on_cd(self, use_on_cd: bool) -> Self {
+        Self { use_on_cd, ..self }
+    }
+
+    pub(crate) fn log_level(self, log_level: Option<&'static str>) -> Self {
+        Self { log_level, ..self }
+    }
+}
+
+impl std::fmt::Display for EvalFnmEnv {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "fnm")?;
+        if let Some(log_level) = &self.log_level {
+            write!(f, " --log-level='{}'", log_level)?;
+        }
+        write!(f, " env")?;
+        if self.use_on_cd {
+            write!(f, " --use-on-cd")?;
+        }
+        Ok(())
+    }
+}
+
+impl Expression<WinCmd> for EvalFnmEnv {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        write!(writer, r#"FOR /f "tokens=*" %i IN ('{}') DO CALL %i"#, self)
+    }
+}
+
+impl Expression<PowerShell> for EvalFnmEnv {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        write!(writer, r#"{} | Out-String | Invoke-Expression"#, self)
+    }
+}
+
+impl Expression<Zsh> for EvalFnmEnv {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        write!(writer, r#"eval "$({})""#, self)
+    }
+}
+
+impl Expression<Bash> for EvalFnmEnv {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        write!(writer, r#"eval "$({})""#, self)
+    }
+}
+
+impl Expression<Fish> for EvalFnmEnv {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        write!(writer, r#"{} | source"#, self)
+    }
+}
diff --git a/tests/shellcode/expect_command_output.rs b/tests/shellcode/expect_command_output.rs
new file mode 100644
index 0000000..329c796
--- /dev/null
+++ b/tests/shellcode/expect_command_output.rs
@@ -0,0 +1,128 @@
+use super::expression::Expression;
+use super::shell::{Bash, Fish, PowerShell, Shell, WinCmd, Zsh};
+use indoc::writedoc;
+use std::fmt::Write;
+
+#[derive(Debug)]
+pub(crate) struct ExpectCommandOutput<S: Shell, Command: Expression<S>> {
+    _shell: std::marker::PhantomData<S>,
+    command: Command,
+    expected_output: &'static str,
+    message: &'static str,
+}
+
+impl<S: Shell, Command: Expression<S>> ExpectCommandOutput<S, Command> {
+    pub(crate) fn new(
+        command: Command,
+        expected_output: &'static str,
+        message: &'static str,
+    ) -> Self {
+        Self {
+            _shell: std::marker::PhantomData,
+            command,
+            expected_output,
+            message,
+        }
+    }
+}
+
+impl<E: Expression<Bash>> Expression<Bash> for ExpectCommandOutput<Bash, E> {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        let mut command = String::new();
+        self.command.write_shell(&mut command)?;
+
+        writedoc!(
+            writer,
+            r#"
+                if [ "$({command})" != "{expected_output}" ]; then
+                    echo 'Expected {message} to be {expected_output:?}, Got: '"$({command})"
+                    exit 1
+                fi
+            "#,
+            command = command,
+            message = self.message,
+            expected_output = self.expected_output,
+        )
+    }
+}
+
+impl<E: Expression<Zsh>> Expression<Zsh> for ExpectCommandOutput<Zsh, E> {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        let mut command = String::new();
+        self.command.write_shell(&mut command)?;
+
+        writedoc!(
+            writer,
+            r#"
+                if [ "$({command})" != "{expected_output}" ]; then
+                    echo 'Expected {message} to be {expected_output:?}, Got: '"$({command})"
+                    exit 1
+                fi
+            "#,
+            command = command,
+            message = self.message,
+            expected_output = self.expected_output,
+        )
+    }
+}
+
+impl<E: Expression<Fish>> Expression<Fish> for ExpectCommandOutput<Fish, E> {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        let mut command = String::new();
+        self.command.write_shell(&mut command)?;
+
+        writedoc!(
+            writer,
+            r#"
+                if test ({command}) != "{expected_output}"
+                    echo 'Expected {message} to be {expected_output:?}, Got: '({command})
+                    exit 1
+                end
+            "#,
+            command = command,
+            expected_output = self.expected_output,
+            message = self.message,
+        )
+    }
+}
+
+impl<E: Expression<PowerShell>> Expression<PowerShell> for ExpectCommandOutput<PowerShell, E> {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        let mut command = String::new();
+        self.command.write_shell(&mut command)?;
+
+        writedoc!(
+            writer,
+            r#"
+                If ("$({command})" -ne "{expected_output}") {{
+                    Write-Output ('Expected {message} to be {expected_output:?}, Got: ' + $({command}))
+                    exit 1
+                }}
+            "#,
+            command = command,
+            expected_output = self.expected_output,
+            message = self.message,
+        )
+    }
+}
+
+impl<E: Expression<WinCmd>> Expression<WinCmd> for ExpectCommandOutput<WinCmd, E> {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        let mut command = String::new();
+        self.command.write_shell(&mut command)?;
+
+        writedoc!(
+            writer,
+            r#"
+                {command} | findstr {expected_output}
+                if %errorlevel% neq 0 (
+                    echo {message} does not match {expected_output:?}
+                    exit 1
+                )
+            "#,
+            command = command,
+            expected_output = WinCmd::shell_escape(self.expected_output),
+            message = self.message,
+        )
+    }
+}
diff --git a/tests/shellcode/expression.rs b/tests/shellcode/expression.rs
new file mode 100644
index 0000000..a00e531
--- /dev/null
+++ b/tests/shellcode/expression.rs
@@ -0,0 +1,21 @@
+use super::line_separated_expressions::LineSeparatedExpressions;
+use super::shell::Shell;
+use std::fmt::{Debug, Write};
+
+pub(crate) trait Expression<E: Shell>: Debug + Sized {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result;
+
+    fn then<B: Expression<E>>(self, other: B) -> LineSeparatedExpressions<E, Self, B> {
+        LineSeparatedExpressions {
+            _shell: std::marker::PhantomData,
+            a: self,
+            b: other,
+        }
+    }
+}
+
+impl<S: Shell> Expression<S> for () {
+    fn write_shell(&self, _writer: &mut impl Write) -> std::fmt::Result {
+        Ok(())
+    }
+}
diff --git a/tests/shellcode/get_stderr.rs b/tests/shellcode/get_stderr.rs
new file mode 100644
index 0000000..328e9ba
--- /dev/null
+++ b/tests/shellcode/get_stderr.rs
@@ -0,0 +1,25 @@
+use super::*;
+use std::marker::PhantomData;
+
+#[derive(Debug)]
+pub(crate) struct GetStderr<S: Shell, E: Expression<S>> {
+    _s: PhantomData<S>,
+    expr: E,
+}
+
+impl<S: Shell, E: Expression<S>> GetStderr<S, E> {
+    pub(crate) fn new(expr: E) -> Self {
+        Self {
+            _s: PhantomData,
+            expr,
+        }
+    }
+}
+
+impl<S: Shell, E: Expression<S>> Expression<S> for GetStderr<S, E> {
+    fn write_shell(&self, writer: &mut impl std::fmt::Write) -> std::fmt::Result {
+        self.expr.write_shell(writer)?;
+        write!(writer, " 2>&1")?;
+        Ok(())
+    }
+}
diff --git a/tests/shellcode/ignore_errors.rs b/tests/shellcode/ignore_errors.rs
new file mode 100644
index 0000000..4d52b71
--- /dev/null
+++ b/tests/shellcode/ignore_errors.rs
@@ -0,0 +1,49 @@
+use super::*;
+use std::marker::PhantomData;
+
+#[derive(Debug)]
+pub(crate) struct IgnoreErrors<S: Shell, E: Expression<S>> {
+    _s: PhantomData<S>,
+    expr: E,
+}
+
+impl<S: Shell, E: Expression<S>> IgnoreErrors<S, E> {
+    pub(crate) fn new(expr: E) -> Self {
+        Self {
+            _s: PhantomData,
+            expr,
+        }
+    }
+}
+
+impl<E: Expression<Bash>> Expression<Bash> for IgnoreErrors<Bash, E> {
+    fn write_shell(&self, writer: &mut impl std::fmt::Write) -> std::fmt::Result {
+        self.expr.write_shell(writer)?;
+        Ok(())
+    }
+}
+
+impl<E: Expression<Zsh>> Expression<Zsh> for IgnoreErrors<Zsh, E> {
+    fn write_shell(&self, writer: &mut impl std::fmt::Write) -> std::fmt::Result {
+        self.expr.write_shell(writer)?;
+        Ok(())
+    }
+}
+
+impl<E: Expression<Fish>> Expression<Fish> for IgnoreErrors<Fish, E> {
+    fn write_shell(&self, writer: &mut impl std::fmt::Write) -> std::fmt::Result {
+        self.expr.write_shell(writer)?;
+        Ok(())
+    }
+}
+
+impl<E: Expression<PowerShell>> Expression<PowerShell> for IgnoreErrors<PowerShell, E> {
+    fn write_shell(&self, writer: &mut impl std::fmt::Write) -> std::fmt::Result {
+        write!(writer, r#"$($_tmp_err_action = $ErrorActionPreference;"#)?;
+        write!(writer, r#"$ErrorActionPreference = "Continue";"#)?;
+        self.expr.write_shell(writer)?;
+        write!(writer, ";")?;
+        write!(writer, r#"$ErrorActionPreference = $_tmp_err_action)"#)?;
+        Ok(())
+    }
+}
diff --git a/tests/shellcode/line_separated_expressions.rs b/tests/shellcode/line_separated_expressions.rs
new file mode 100644
index 0000000..6ef1cc1
--- /dev/null
+++ b/tests/shellcode/line_separated_expressions.rs
@@ -0,0 +1,62 @@
+use super::expression::Expression;
+use super::shell::Shell;
+use std::fmt::Write;
+use std::marker::PhantomData;
+
+#[derive(Debug)]
+pub(crate) struct LineSeparatedExpressions<S: Shell, A: Expression<S>, B: Expression<S>> {
+    pub(crate) _shell: std::marker::PhantomData<S>,
+    pub(crate) a: A,
+    pub(crate) b: B,
+}
+
+impl<S: Shell, A: Expression<S>, B: Expression<S>> LineSeparatedExpressions<S, A, B> {
+    pub fn then<C: Expression<S>>(
+        self,
+        c: C,
+    ) -> LineSeparatedExpressions<S, LineSeparatedExpressions<S, A, B>, C> {
+        LineSeparatedExpressions {
+            _shell: PhantomData,
+            a: self,
+            b: c,
+        }
+    }
+}
+
+impl<S: Shell, B: Expression<S>> LineSeparatedExpressions<S, (), B> {
+    pub(crate) fn new(b: B) -> Self {
+        Self {
+            _shell: std::marker::PhantomData,
+            a: (),
+            b,
+        }
+    }
+}
+
+impl<S: Shell, A: Expression<S>, B: Expression<S>> Expression<S>
+    for LineSeparatedExpressions<S, A, B>
+{
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        self.a.write_shell(writer)?;
+        write!(writer, "\n")?;
+        self.b.write_shell(writer)
+    }
+}
+
+mod tests {
+    use super::super::raw::Raw;
+    use super::super::shell::Zsh;
+    use super::*;
+    use pretty_assertions::assert_eq;
+
+    #[test]
+    fn test_line_separated_expression() {
+        let mut s = String::new();
+        LineSeparatedExpressions::<Zsh, _, _>::new(Raw("Hello".into()))
+            .then(Raw("World".into()))
+            .then(Raw("Other".into()))
+            .write_shell(&mut s)
+            .unwrap();
+        assert_eq!(s.trim(), "Hello\nWorld\nOther");
+    }
+}
diff --git a/tests/shellcode/mod.rs b/tests/shellcode/mod.rs
new file mode 100644
index 0000000..d55540d
--- /dev/null
+++ b/tests/shellcode/mod.rs
@@ -0,0 +1,113 @@
+mod call;
+mod die_on_errors;
+mod eval_fnm_env;
+mod expect_command_output;
+mod expression;
+mod get_stderr;
+mod ignore_errors;
+mod line_separated_expressions;
+mod nothing;
+mod output_contains;
+mod raw;
+mod shell;
+mod sub_shell;
+mod test_node_version;
+mod write_file;
+
+#[allow(unused)]
+pub use call::*;
+#[allow(unused)]
+pub use die_on_errors::*;
+#[allow(unused)]
+pub use eval_fnm_env::*;
+#[allow(unused)]
+pub use expect_command_output::*;
+#[allow(unused)]
+pub use expression::*;
+#[allow(unused)]
+pub use get_stderr::*;
+#[allow(unused)]
+pub use ignore_errors::*;
+#[allow(unused)]
+#[allow(unused)]
+pub use line_separated_expressions::*;
+#[allow(unused)]
+pub use nothing::*;
+#[allow(unused)]
+pub use output_contains::*;
+#[allow(unused)]
+pub use raw::*;
+#[allow(unused)]
+pub use shell::*;
+#[allow(unused)]
+pub use sub_shell::*;
+#[allow(unused)]
+pub use test_node_version::*;
+#[allow(unused)]
+pub use write_file::*;
+
+use std::path::Path;
+
+pub(crate) fn run_test_file(dir: &Path, shell: &impl Shell, code: &str) {
+    let fnm_dir = tempfile::tempdir().unwrap();
+    let target_dir = std::path::PathBuf::from(env!("CARGO_BIN_EXE_fnm"))
+        .parent()
+        .unwrap()
+        .to_path_buf();
+    let path_str = {
+        let path_env = std::env::var("PATH").unwrap();
+        let mut path_split: Vec<_> = std::env::split_paths(&path_env).collect();
+        path_split.insert(0, target_dir);
+        path_split.insert(0, dir.join("bin")); // for custom binaries
+        std::env::join_paths(path_split).unwrap()
+    };
+    duct::cmd(shell.binary_name(), shell.launch_args())
+        .env("PATH", path_str)
+        .env("FNM_DIR", fnm_dir.path())
+        .env("HOME", tempfile::tempdir().unwrap().path())
+        .env_remove("FNM_MULTISHELL_PATH")
+        .dir(dir)
+        .stdin_bytes(code)
+        .run()
+        .unwrap();
+}
+
+#[macro_export]
+macro_rules! test_shell {
+    ($($shell:ident),+; $block:block) => {
+        test_shell!($($shell),+; |_path| $block);
+    };
+    ($($shell:ident),+; $f:expr) => {
+        $(
+            #[test]
+            #[serial_test::serial]
+            #[allow(non_snake_case)]
+            fn $shell() {
+                use super::*;
+                #[allow(unused)]
+                use pretty_assertions::assert_eq;
+                let current_dir = tempfile::tempdir().expect("Can't create a temp dir");
+                let shell = $crate::shellcode::$shell;
+
+                let mut source = String::new();
+                empty_shell_script(&shell)
+                    .then($crate::shellcode::DieOnErrors)
+                    .then(($f)(current_dir.path()))
+                    .write_shell(&mut source)
+                    .expect("Can't create shell script");
+
+                insta::assert_snapshot!(&source.trim());
+
+                if !shell.currently_supported() {
+                    return;
+                }
+
+                $crate::shellcode::run_test_file(
+                    current_dir.path(),
+                    &shell,
+                    &source.trim()
+                );
+            }
+        )+
+    };
+}
diff --git a/tests/shellcode/nothing.rs b/tests/shellcode/nothing.rs
new file mode 100644
index 0000000..ade91c5
--- /dev/null
+++ b/tests/shellcode/nothing.rs
@@ -0,0 +1,19 @@
+use super::expression::Expression;
+use super::shell::Shell;
+use std::fmt::Write;
+use std::marker::PhantomData;
+
+#[derive(Debug)]
+pub(crate) struct Nothing<S: Shell> {
+    shell: PhantomData<S>,
+}
+
+pub(crate) fn empty_shell_script<S: Shell>(_s: &S) -> Nothing<S> {
+    Nothing { shell: PhantomData }
+}
+
+impl<S: Shell> Expression<S> for Nothing<S> {
+    fn write_shell(&self, _writer: &mut impl Write) -> std::fmt::Result {
+        Ok(())
+    }
+}
diff --git a/tests/shellcode/output_contains.rs b/tests/shellcode/output_contains.rs
new file mode 100644
index 0000000..fc1395e
--- /dev/null
+++ b/tests/shellcode/output_contains.rs
@@ -0,0 +1,65 @@
+use super::*;
+use std::marker::PhantomData;
+
+#[derive(Debug)]
+pub(crate) struct OutputContains<S: Shell, Output: Expression<S>> {
+    _s: PhantomData<S>,
+    output_of: Output,
+    contains: &'static str,
+}
+
+impl<S: Shell, Output: Expression<S>> OutputContains<S, Output> {
+    pub(crate) fn new(output_of: Output, contains: &'static str) -> Self {
+        Self {
+            _s: PhantomData,
+            output_of,
+            contains,
+        }
+    }
+}
+
+impl<E: Expression<Zsh>> Expression<Zsh> for OutputContains<Zsh, E> {
+    fn write_shell(&self, writer: &mut impl std::fmt::Write) -> std::fmt::Result {
+        self.output_of.write_shell(writer)?;
+        write!(writer, " | grep {}", Zsh::shell_escape(self.contains))
+    }
+}
+
+impl<E: Expression<Bash>> Expression<Bash> for OutputContains<Bash, E> {
+    fn write_shell(&self, writer: &mut impl std::fmt::Write) -> std::fmt::Result {
+        self.output_of.write_shell(writer)?;
+        write!(writer, " | grep {}", Bash::shell_escape(self.contains))
+    }
+}
+
+impl<E: Expression<Fish>> Expression<Fish> for OutputContains<Fish, E> {
+    fn write_shell(&self, writer: &mut impl std::fmt::Write) -> std::fmt::Result {
+        self.output_of.write_shell(writer)?;
+        write!(writer, " | grep {}", Fish::shell_escape(self.contains))
+    }
+}
+
+impl<E: Expression<PowerShell>> Expression<PowerShell> for OutputContains<PowerShell, E> {
+    fn write_shell(&self, writer: &mut impl std::fmt::Write) -> std::fmt::Result {
+        // $($__out__ = (fnm ls | findstr 6.11.3); if ($LASTEXITCODE -ne 0) { "WELP" } else { $__out__ })
+        write!(writer, "$(")?;
+        {
+            write!(writer, "$__out__ = $(")?;
+            {
+                self.output_of.write_shell(writer)?;
+                write!(
+                    writer,
+                    " | Select-String {}",
+                    PowerShell::shell_escape(self.contains)
+                )?;
+            }
+            write!(writer, "); ")?;
+            write!(writer, "echo $__out__; ")?;
+            write!(writer, "if ($__out__ -eq $null)")?;
+            write!(writer, "{{ exit 1 }} ")?;
+            write!(writer, "else {{ $__out__ }}")?;
+        }
+        write!(writer, ")")?;
+        Ok(())
+    }
+}
diff --git a/tests/shellcode/raw.rs b/tests/shellcode/raw.rs
new file mode 100644
index 0000000..63acac4
--- /dev/null
+++ b/tests/shellcode/raw.rs
@@ -0,0 +1,13 @@
+use super::expression::Expression;
+use super::shell::Shell;
+use std::fmt::Write;
+
+/// For debugging purposes
+#[derive(Debug)]
+pub(crate) struct Raw(pub String);
+
+impl<S: Shell> Expression<S> for Raw {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        write!(writer, "{}", self.0)
+    }
+}
diff --git a/tests/shellcode/shell.rs b/tests/shellcode/shell.rs
new file mode 100644
index 0000000..3bc45f0
--- /dev/null
+++ b/tests/shellcode/shell.rs
@@ -0,0 +1,112 @@
+use std::borrow::Cow;
+use std::fmt::Debug;
+
+pub(crate) trait Shell: Debug {
+    fn currently_supported(&self) -> bool;
+    fn name(&self) -> &'static str;
+    fn binary_name(&self) -> &'static str;
+    fn shell_escape(str: &str) -> Cow<str>;
+    fn launch_args(&self) -> &'static [&'static str] {
+        &[]
+    }
+}
+
+#[derive(Debug)]
+pub(crate) struct Fish;
+impl Shell for Fish {
+    fn currently_supported(&self) -> bool {
+        cfg!(not(windows))
+    }
+    fn name(&self) -> &'static str {
+        "fish"
+    }
+    fn binary_name(&self) -> &'static str {
+        "fish"
+    }
+    fn shell_escape(str: &str) -> Cow<str> {
+        shell_escape::unix::escape(Cow::from(str))
+    }
+}
+
+#[derive(Debug)]
+pub(crate) struct Bash;
+impl Shell for Bash {
+    fn currently_supported(&self) -> bool {
+        true
+    }
+    fn name(&self) -> &'static str {
+        "bash"
+    }
+    fn binary_name(&self) -> &'static str {
+        "bash"
+    }
+    fn shell_escape(str: &str) -> Cow<str> {
+        shell_escape::unix::escape(Cow::from(str))
+    }
+}
+
+#[derive(Debug)]
+pub(crate) struct Zsh;
+impl Shell for Zsh {
+    fn currently_supported(&self) -> bool {
+        cfg!(not(windows))
+    }
+    fn name(&self) -> &'static str {
+        "zsh"
+    }
+    fn binary_name(&self) -> &'static str {
+        "zsh"
+    }
+    fn shell_escape(str: &str) -> Cow<str> {
+        shell_escape::unix::escape(Cow::from(str))
+    }
+}
+
+#[derive(Debug)]
+pub(crate) struct WinCmd;
+impl Shell for WinCmd {
+    fn currently_supported(&self) -> bool {
+        cfg!(windows)
+    }
+    fn name(&self) -> &'static str {
+        "win_cmd"
+    }
+    fn binary_name(&self) -> &'static str {
+        "cmd"
+    }
+    fn shell_escape(str: &str) -> Cow<str> {
+        Cow::from(
+            str.replace('\r', "")
+                .replace('\n', "^\n\n")
+                .replace('%', "%%")
+                .replace('|', "^|")
+                .replace('(', "^(")
+                .replace(')', "^)"),
+        )
+    }
+}
+
+#[derive(Debug)]
+pub(crate) struct PowerShell;
+impl Shell for PowerShell {
+    fn currently_supported(&self) -> bool {
+        true
+    }
+    fn name(&self) -> &'static str {
+        "powershell"
+    }
+    fn binary_name(&self) -> &'static str {
+        if cfg!(windows) {
+            "powershell"
+        } else {
+            "pwsh"
+        }
+    }
+    fn shell_escape(str: &str) -> Cow<str> {
+        let new_str = format!("'{}'", str.replace('\'', "''"));
+        Cow::from(new_str)
+    }
+    fn launch_args(&self) -> &'static [&'static str] {
+        &["-NoProfile"]
+    }
+}
diff --git a/tests/shellcode/sub_shell.rs b/tests/shellcode/sub_shell.rs
new file mode 100644
index 0000000..79fd353
--- /dev/null
+++ b/tests/shellcode/sub_shell.rs
@@ -0,0 +1,55 @@
+use super::expression::Expression;
+use super::shell::*;
+use std::fmt::Write;
+use std::marker::PhantomData;
+
+#[derive(Debug)]
+pub(crate) struct SubShell<S: Shell, Exp: Expression<S>> {
+    _s: PhantomData<S>,
+    expression: Exp,
+}
+
+impl<S: Shell, Exp: Expression<S>> SubShell<S, Exp> {
+    pub(crate) fn new(expression: Exp) -> Self {
+        Self {
+            _s: PhantomData,
+            expression,
+        }
+    }
+}
+
+impl<E: Expression<Zsh>> Expression<Zsh> for SubShell<Zsh, E> {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        let mut s = String::new();
+        self.expression.write_shell(&mut s)?;
+        write!(writer, r#"echo {} | zsh"#, Zsh::shell_escape(&s))
+    }
+}
+
+impl<E: Expression<Bash>> Expression<Bash> for SubShell<Bash, E> {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        let mut s = String::new();
+        self.expression.write_shell(&mut s)?;
+        write!(writer, r#"echo {} | bash"#, Bash::shell_escape(&s))
+    }
+}
+
+impl<E: Expression<Fish>> Expression<Fish> for SubShell<Fish, E> {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        let mut s = String::new();
+        self.expression.write_shell(&mut s)?;
+        write!(writer, r#"fish -c {}"#, Fish::shell_escape(&s))
+    }
+}
+
+impl<E: Expression<PowerShell>> Expression<PowerShell> for SubShell<PowerShell, E> {
+    fn write_shell(&self, writer: &mut impl Write) -> std::fmt::Result {
+        let mut s = String::new();
+        self.expression.write_shell(&mut s)?;
+        write!(
+            writer,
+            r#"echo {} | powershell -NoProfile"#,
+            PowerShell::shell_escape(&s)
+        )
+    }
+}
diff --git a/tests/shellcode/test_node_version.rs b/tests/shellcode/test_node_version.rs
new file mode 100644
index 0000000..0d64899
--- /dev/null
+++ b/tests/shellcode/test_node_version.rs
@@ -0,0 +1,12 @@
+use super::shell::Shell;
+use super::{Call, ExpectCommandOutput};
+
+pub(crate) fn test_node_version<S: Shell>(
+    expected_version: &'static str,
+) -> ExpectCommandOutput<S, Call> {
+    ExpectCommandOutput::new(
+        Call::new("node", vec!["-v"]),
+        expected_version,
+        "Node version",
+    )
+}
diff --git a/tests/shellcode/write_file.rs b/tests/shellcode/write_file.rs
new file mode 100644
index 0000000..f31f840
--- /dev/null
+++ b/tests/shellcode/write_file.rs
@@ -0,0 +1,24 @@
+use super::*;
+
+#[derive(Debug)]
+pub struct WriteFile {
+    name: &'static str,
+    contents: &'static str,
+}
+
+impl WriteFile {
+    pub(crate) fn new(name: &'static str, contents: &'static str) -> Self {
+        Self { name, contents }
+    }
+}
+
+impl<S: Shell> Expression<S> for WriteFile {
+    fn write_shell(&self, writer: &mut impl std::fmt::Write) -> std::fmt::Result {
+        write!(
+            writer,
+            "echo {} > {}",
+            S::shell_escape(self.contents),
+            S::shell_escape(self.name)
+        )
+    }
+}
diff --git a/tests/snapshots/e2e__feature_tests__aliases__Bash.snap b/tests/snapshots/e2e__feature_tests__aliases__Bash.snap
new file mode 100644
index 0000000..4f75171
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__aliases__Bash.snap
@@ -0,0 +1,32 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm env)"
+fnm install 6.11.3
+fnm install 8.11.3
+fnm alias 8.11 oldie
+fnm alias 6 older
+fnm default older
+fnm ls | grep 8.11.3 | grep oldie
+fnm ls | grep 6.11.3 | grep older | grep default
+fnm use older
+if [ "$(node -v)" != "v6.11.3" ]; then
+    echo 'Expected Node version to be "v6.11.3", Got: '"$(node -v)"
+    exit 1
+fi
+
+fnm use oldie
+if [ "$(node -v)" != "v8.11.3" ]; then
+    echo 'Expected Node version to be "v8.11.3", Got: '"$(node -v)"
+    exit 1
+fi
+
+fnm use default
+if [ "$(node -v)" != "v6.11.3" ]; then
+    echo 'Expected Node version to be "v6.11.3", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__aliases__Fish.snap b/tests/snapshots/e2e__feature_tests__aliases__Fish.snap
new file mode 100644
index 0000000..58c5a2c
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__aliases__Fish.snap
@@ -0,0 +1,29 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm env | source
+fnm install 6.11.3
+fnm install 8.11.3
+fnm alias 8.11 oldie
+fnm alias 6 older
+fnm default older
+fnm ls | grep 8.11.3 | grep oldie
+fnm ls | grep 6.11.3 | grep older | grep default
+fnm use older
+if test (node -v) != "v6.11.3"
+    echo 'Expected Node version to be "v6.11.3", Got: '(node -v)
+    exit 1
+end
+
+fnm use oldie
+if test (node -v) != "v8.11.3"
+    echo 'Expected Node version to be "v8.11.3", Got: '(node -v)
+    exit 1
+end
+
+fnm use default
+if test (node -v) != "v6.11.3"
+    echo 'Expected Node version to be "v6.11.3", Got: '(node -v)
+    exit 1
+end
diff --git a/tests/snapshots/e2e__feature_tests__aliases__PowerShell.snap b/tests/snapshots/e2e__feature_tests__aliases__PowerShell.snap
new file mode 100644
index 0000000..ac9ecf8
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__aliases__PowerShell.snap
@@ -0,0 +1,30 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm env | Out-String | Invoke-Expression
+fnm install 6.11.3
+fnm install 8.11.3
+fnm alias 8.11 oldie
+fnm alias 6 older
+fnm default older
+$($__out__ = $($($__out__ = $(fnm ls | Select-String '8.11.3'); echo $__out__; if ($__out__ -eq $null){ exit 1 } else { $__out__ }) | Select-String 'oldie'); echo $__out__; if ($__out__ -eq $null){ exit 1 } else { $__out__ })
+$($__out__ = $($($__out__ = $($($__out__ = $(fnm ls | Select-String '6.11.3'); echo $__out__; if ($__out__ -eq $null){ exit 1 } else { $__out__ }) | Select-String 'older'); echo $__out__; if ($__out__ -eq $null){ exit 1 } else { $__out__ }) | Select-String 'default'); echo $__out__; if ($__out__ -eq $null){ exit 1 } else { $__out__ })
+fnm use older
+If ("$(node -v)" -ne "v6.11.3") {
+    Write-Output ('Expected Node version to be "v6.11.3", Got: ' + $(node -v))
+    exit 1
+}
+
+fnm use oldie
+If ("$(node -v)" -ne "v8.11.3") {
+    Write-Output ('Expected Node version to be "v8.11.3", Got: ' + $(node -v))
+    exit 1
+}
+
+fnm use default
+If ("$(node -v)" -ne "v6.11.3") {
+    Write-Output ('Expected Node version to be "v6.11.3", Got: ' + $(node -v))
+    exit 1
+}
diff --git a/tests/snapshots/e2e__feature_tests__aliases__Zsh.snap b/tests/snapshots/e2e__feature_tests__aliases__Zsh.snap
new file mode 100644
index 0000000..02dde0f
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__aliases__Zsh.snap
@@ -0,0 +1,30 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm env)"
+fnm install 6.11.3
+fnm install 8.11.3
+fnm alias 8.11 oldie
+fnm alias 6 older
+fnm default older
+fnm ls | grep 8.11.3 | grep oldie
+fnm ls | grep 6.11.3 | grep older | grep default
+fnm use older
+if [ "$(node -v)" != "v6.11.3" ]; then
+    echo 'Expected Node version to be "v6.11.3", Got: '"$(node -v)"
+    exit 1
+fi
+
+fnm use oldie
+if [ "$(node -v)" != "v8.11.3" ]; then
+    echo 'Expected Node version to be "v8.11.3", Got: '"$(node -v)"
+    exit 1
+fi
+
+fnm use default
+if [ "$(node -v)" != "v6.11.3" ]; then
+    echo 'Expected Node version to be "v6.11.3", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__basic__Bash.snap b/tests/snapshots/e2e__feature_tests__basic__Bash.snap
new file mode 100644
index 0000000..932b6ee
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__basic__Bash.snap
@@ -0,0 +1,14 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm env)"
+fnm install v8.11.3
+fnm use v8.11.3
+if [ "$(node -v)" != "v8.11.3" ]; then
+    echo 'Expected Node version to be "v8.11.3", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__basic__Fish.snap b/tests/snapshots/e2e__feature_tests__basic__Fish.snap
new file mode 100644
index 0000000..8e889f5
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__basic__Fish.snap
@@ -0,0 +1,11 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm env | source
+fnm install v8.11.3
+fnm use v8.11.3
+if test (node -v) != "v8.11.3"
+    echo 'Expected Node version to be "v8.11.3", Got: '(node -v)
+    exit 1
+end
diff --git a/tests/snapshots/e2e__feature_tests__basic__PowerShell.snap b/tests/snapshots/e2e__feature_tests__basic__PowerShell.snap
new file mode 100644
index 0000000..36e04d4
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__basic__PowerShell.snap
@@ -0,0 +1,12 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm env | Out-String | Invoke-Expression
+fnm install v8.11.3
+fnm use v8.11.3
+If ("$(node -v)" -ne "v8.11.3") {
+    Write-Output ('Expected Node version to be "v8.11.3", Got: ' + $(node -v))
+    exit 1
+}
diff --git a/tests/snapshots/e2e__feature_tests__basic__WinCmd.snap b/tests/snapshots/e2e__feature_tests__basic__WinCmd.snap
new file mode 100644
index 0000000..7582768
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__basic__WinCmd.snap
@@ -0,0 +1,12 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+FOR /f "tokens=*" %i IN ('fnm env') DO CALL %i
+fnm install v8.11.3
+fnm use v8.11.3
+node -v | findstr v8.11.3
+if %errorlevel% neq 0 (
+    echo Node version does not match "v8.11.3"
+    exit 1
+)
diff --git a/tests/snapshots/e2e__feature_tests__basic__Zsh.snap b/tests/snapshots/e2e__feature_tests__basic__Zsh.snap
new file mode 100644
index 0000000..e1644d3
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__basic__Zsh.snap
@@ -0,0 +1,12 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm env)"
+fnm install v8.11.3
+fnm use v8.11.3
+if [ "$(node -v)" != "v8.11.3" ]; then
+    echo 'Expected Node version to be "v8.11.3", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__current__Bash.snap b/tests/snapshots/e2e__feature_tests__current__Bash.snap
new file mode 100644
index 0000000..0069975
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__current__Bash.snap
@@ -0,0 +1,32 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm env)"
+if [ "$(fnm current)" != "none" ]; then
+    echo 'Expected currently activated version to be "none", Got: '"$(fnm current)"
+    exit 1
+fi
+
+fnm install v8.11.3
+fnm install v10.10.0
+fnm use v8.11.3
+if [ "$(fnm current)" != "v8.11.3" ]; then
+    echo 'Expected currently activated version to be "v8.11.3", Got: '"$(fnm current)"
+    exit 1
+fi
+
+fnm use v10.10.0
+if [ "$(fnm current)" != "v10.10.0" ]; then
+    echo 'Expected currently activated version to be "v10.10.0", Got: '"$(fnm current)"
+    exit 1
+fi
+
+fnm use system
+if [ "$(fnm current)" != "system" ]; then
+    echo 'Expected currently activated version to be "system", Got: '"$(fnm current)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__current__Fish.snap b/tests/snapshots/e2e__feature_tests__current__Fish.snap
new file mode 100644
index 0000000..9942e33
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__current__Fish.snap
@@ -0,0 +1,29 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm env | source
+if test (fnm current) != "none"
+    echo 'Expected currently activated version to be "none", Got: '(fnm current)
+    exit 1
+end
+
+fnm install v8.11.3
+fnm install v10.10.0
+fnm use v8.11.3
+if test (fnm current) != "v8.11.3"
+    echo 'Expected currently activated version to be "v8.11.3", Got: '(fnm current)
+    exit 1
+end
+
+fnm use v10.10.0
+if test (fnm current) != "v10.10.0"
+    echo 'Expected currently activated version to be "v10.10.0", Got: '(fnm current)
+    exit 1
+end
+
+fnm use system
+if test (fnm current) != "system"
+    echo 'Expected currently activated version to be "system", Got: '(fnm current)
+    exit 1
+end
diff --git a/tests/snapshots/e2e__feature_tests__current__PowerShell.snap b/tests/snapshots/e2e__feature_tests__current__PowerShell.snap
new file mode 100644
index 0000000..3c748c0
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__current__PowerShell.snap
@@ -0,0 +1,30 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm env | Out-String | Invoke-Expression
+If ("$(fnm current)" -ne "none") {
+    Write-Output ('Expected currently activated version to be "none", Got: ' + $(fnm current))
+    exit 1
+}
+
+fnm install v8.11.3
+fnm install v10.10.0
+fnm use v8.11.3
+If ("$(fnm current)" -ne "v8.11.3") {
+    Write-Output ('Expected currently activated version to be "v8.11.3", Got: ' + $(fnm current))
+    exit 1
+}
+
+fnm use v10.10.0
+If ("$(fnm current)" -ne "v10.10.0") {
+    Write-Output ('Expected currently activated version to be "v10.10.0", Got: ' + $(fnm current))
+    exit 1
+}
+
+fnm use system
+If ("$(fnm current)" -ne "system") {
+    Write-Output ('Expected currently activated version to be "system", Got: ' + $(fnm current))
+    exit 1
+}
diff --git a/tests/snapshots/e2e__feature_tests__current__WinCmd.snap b/tests/snapshots/e2e__feature_tests__current__WinCmd.snap
new file mode 100644
index 0000000..4613797
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__current__WinCmd.snap
@@ -0,0 +1,33 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+FOR /f "tokens=*" %i IN ('fnm env') DO CALL %i
+fnm current | findstr none
+if %errorlevel% neq 0 (
+    echo currently activated version does not match "none"
+    exit 1
+)
+
+fnm install v8.11.3
+fnm install v10.10.0
+fnm use v8.11.3
+fnm current | findstr v8.11.3
+if %errorlevel% neq 0 (
+    echo currently activated version does not match "v8.11.3"
+    exit 1
+)
+
+fnm use v10.10.0
+fnm current | findstr v10.10.0
+if %errorlevel% neq 0 (
+    echo currently activated version does not match "v10.10.0"
+    exit 1
+)
+
+fnm use system
+fnm current | findstr system
+if %errorlevel% neq 0 (
+    echo currently activated version does not match "system"
+    exit 1
+)
diff --git a/tests/snapshots/e2e__feature_tests__current__Zsh.snap b/tests/snapshots/e2e__feature_tests__current__Zsh.snap
new file mode 100644
index 0000000..0065244
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__current__Zsh.snap
@@ -0,0 +1,30 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm env)"
+if [ "$(fnm current)" != "none" ]; then
+    echo 'Expected currently activated version to be "none", Got: '"$(fnm current)"
+    exit 1
+fi
+
+fnm install v8.11.3
+fnm install v10.10.0
+fnm use v8.11.3
+if [ "$(fnm current)" != "v8.11.3" ]; then
+    echo 'Expected currently activated version to be "v8.11.3", Got: '"$(fnm current)"
+    exit 1
+fi
+
+fnm use v10.10.0
+if [ "$(fnm current)" != "v10.10.0" ]; then
+    echo 'Expected currently activated version to be "v10.10.0", Got: '"$(fnm current)"
+    exit 1
+fi
+
+fnm use system
+if [ "$(fnm current)" != "system" ]; then
+    echo 'Expected currently activated version to be "system", Got: '"$(fnm current)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__exec__Bash.snap b/tests/snapshots/e2e__feature_tests__exec__Bash.snap
new file mode 100644
index 0000000..c0f3d15
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__exec__Bash.snap
@@ -0,0 +1,26 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm env)"
+echo v8.10.0 > .nvmrc
+fnm install
+fnm install v6.10.0
+fnm install v10.10.0
+if [ "$(fnm exec -- node -v)" != "v8.10.0" ]; then
+    echo 'Expected version file exec to be "v8.10.0", Got: '"$(fnm exec -- node -v)"
+    exit 1
+fi
+
+if [ "$(fnm exec --using=6 -- node -v)" != "v6.10.0" ]; then
+    echo 'Expected exec:6 node -v to be "v6.10.0", Got: '"$(fnm exec --using=6 -- node -v)"
+    exit 1
+fi
+
+if [ "$(fnm exec --using=10 -- node -v)" != "v10.10.0" ]; then
+    echo 'Expected exec:6 node -v to be "v10.10.0", Got: '"$(fnm exec --using=10 -- node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__exec__Fish.snap b/tests/snapshots/e2e__feature_tests__exec__Fish.snap
new file mode 100644
index 0000000..7bc86fc
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__exec__Fish.snap
@@ -0,0 +1,23 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm env | source
+echo v8.10.0 > .nvmrc
+fnm install
+fnm install v6.10.0
+fnm install v10.10.0
+if test (fnm exec -- node -v) != "v8.10.0"
+    echo 'Expected version file exec to be "v8.10.0", Got: '(fnm exec -- node -v)
+    exit 1
+end
+
+if test (fnm exec --using=6 -- node -v) != "v6.10.0"
+    echo 'Expected exec:6 node -v to be "v6.10.0", Got: '(fnm exec --using=6 -- node -v)
+    exit 1
+end
+
+if test (fnm exec --using=10 -- node -v) != "v10.10.0"
+    echo 'Expected exec:6 node -v to be "v10.10.0", Got: '(fnm exec --using=10 -- node -v)
+    exit 1
+end
diff --git a/tests/snapshots/e2e__feature_tests__exec__PowerShell.snap b/tests/snapshots/e2e__feature_tests__exec__PowerShell.snap
new file mode 100644
index 0000000..a09e925
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__exec__PowerShell.snap
@@ -0,0 +1,24 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm env | Out-String | Invoke-Expression
+echo 'v8.10.0' > '.nvmrc'
+fnm install
+fnm install v6.10.0
+fnm install v10.10.0
+If ("$(fnm exec -- node -v)" -ne "v8.10.0") {
+    Write-Output ('Expected version file exec to be "v8.10.0", Got: ' + $(fnm exec -- node -v))
+    exit 1
+}
+
+If ("$(fnm exec --using=6 -- node -v)" -ne "v6.10.0") {
+    Write-Output ('Expected exec:6 node -v to be "v6.10.0", Got: ' + $(fnm exec --using=6 -- node -v))
+    exit 1
+}
+
+If ("$(fnm exec --using=10 -- node -v)" -ne "v10.10.0") {
+    Write-Output ('Expected exec:6 node -v to be "v10.10.0", Got: ' + $(fnm exec --using=10 -- node -v))
+    exit 1
+}
diff --git a/tests/snapshots/e2e__feature_tests__exec__WinCmd.snap b/tests/snapshots/e2e__feature_tests__exec__WinCmd.snap
new file mode 100644
index 0000000..f8ba17c
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__exec__WinCmd.snap
@@ -0,0 +1,26 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+FOR /f "tokens=*" %i IN ('fnm env') DO CALL %i
+echo v8.10.0 > .nvmrc
+fnm install
+fnm install v6.10.0
+fnm install v10.10.0
+fnm exec -- node -v | findstr v8.10.0
+if %errorlevel% neq 0 (
+    echo version file exec does not match "v8.10.0"
+    exit 1
+)
+
+fnm exec --using=6 -- node -v | findstr v6.10.0
+if %errorlevel% neq 0 (
+    echo exec:6 node -v does not match "v6.10.0"
+    exit 1
+)
+
+fnm exec --using=10 -- node -v | findstr v10.10.0
+if %errorlevel% neq 0 (
+    echo exec:6 node -v does not match "v10.10.0"
+    exit 1
+)
diff --git a/tests/snapshots/e2e__feature_tests__exec__Zsh.snap b/tests/snapshots/e2e__feature_tests__exec__Zsh.snap
new file mode 100644
index 0000000..cc989f8
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__exec__Zsh.snap
@@ -0,0 +1,24 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm env)"
+echo v8.10.0 > .nvmrc
+fnm install
+fnm install v6.10.0
+fnm install v10.10.0
+if [ "$(fnm exec -- node -v)" != "v8.10.0" ]; then
+    echo 'Expected version file exec to be "v8.10.0", Got: '"$(fnm exec -- node -v)"
+    exit 1
+fi
+
+if [ "$(fnm exec --using=6 -- node -v)" != "v6.10.0" ]; then
+    echo 'Expected exec:6 node -v to be "v6.10.0", Got: '"$(fnm exec --using=6 -- node -v)"
+    exit 1
+fi
+
+if [ "$(fnm exec --using=10 -- node -v)" != "v10.10.0" ]; then
+    echo 'Expected exec:6 node -v to be "v10.10.0", Got: '"$(fnm exec --using=10 -- node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__existing_installation__Bash.snap b/tests/snapshots/e2e__feature_tests__existing_installation__Bash.snap
new file mode 100644
index 0000000..65ba39c
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__existing_installation__Bash.snap
@@ -0,0 +1,10 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm env)"
+fnm install v8.11.3
+fnm install v8.11.3 2>&1 | grep 'already installed'
diff --git a/tests/snapshots/e2e__feature_tests__existing_installation__Fish.snap b/tests/snapshots/e2e__feature_tests__existing_installation__Fish.snap
new file mode 100644
index 0000000..f89c847
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__existing_installation__Fish.snap
@@ -0,0 +1,7 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm env | source
+fnm install v8.11.3
+fnm install v8.11.3 2>&1 | grep 'already installed'
diff --git a/tests/snapshots/e2e__feature_tests__existing_installation__PowerShell.snap b/tests/snapshots/e2e__feature_tests__existing_installation__PowerShell.snap
new file mode 100644
index 0000000..a679cd1
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__existing_installation__PowerShell.snap
@@ -0,0 +1,8 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm env | Out-String | Invoke-Expression
+fnm install v8.11.3
+$($__out__ = $($($_tmp_err_action = $ErrorActionPreference;$ErrorActionPreference = "Continue";fnm install v8.11.3 2>&1;$ErrorActionPreference = $_tmp_err_action) | Select-String 'already installed'); echo $__out__; if ($__out__ -eq $null){ exit 1 } else { $__out__ })
diff --git a/tests/snapshots/e2e__feature_tests__existing_installation__Zsh.snap b/tests/snapshots/e2e__feature_tests__existing_installation__Zsh.snap
new file mode 100644
index 0000000..47ee7fa
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__existing_installation__Zsh.snap
@@ -0,0 +1,8 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm env)"
+fnm install v8.11.3
+fnm install v8.11.3 2>&1 | grep 'already installed'
diff --git a/tests/snapshots/e2e__feature_tests__latest_lts__Bash.snap b/tests/snapshots/e2e__feature_tests__latest_lts__Bash.snap
new file mode 100644
index 0000000..e22c769
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__latest_lts__Bash.snap
@@ -0,0 +1,11 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm env)"
+fnm install --lts
+fnm ls | grep lts-latest
+fnm use 'lts/*'
diff --git a/tests/snapshots/e2e__feature_tests__latest_lts__Fish.snap b/tests/snapshots/e2e__feature_tests__latest_lts__Fish.snap
new file mode 100644
index 0000000..ff7cacf
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__latest_lts__Fish.snap
@@ -0,0 +1,8 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm env | source
+fnm install --lts
+fnm ls | grep lts-latest
+fnm use 'lts/*'
diff --git a/tests/snapshots/e2e__feature_tests__latest_lts__PowerShell.snap b/tests/snapshots/e2e__feature_tests__latest_lts__PowerShell.snap
new file mode 100644
index 0000000..125b396
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__latest_lts__PowerShell.snap
@@ -0,0 +1,9 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm env | Out-String | Invoke-Expression
+fnm install --lts
+$($__out__ = $(fnm ls | Select-String 'lts-latest'); echo $__out__; if ($__out__ -eq $null){ exit 1 } else { $__out__ })
+fnm use 'lts/*'
diff --git a/tests/snapshots/e2e__feature_tests__latest_lts__Zsh.snap b/tests/snapshots/e2e__feature_tests__latest_lts__Zsh.snap
new file mode 100644
index 0000000..2c40963
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__latest_lts__Zsh.snap
@@ -0,0 +1,9 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm env)"
+fnm install --lts
+fnm ls | grep lts-latest
+fnm use 'lts/*'
diff --git a/tests/snapshots/e2e__feature_tests__list_local_with_nothing_installed__Bash.snap b/tests/snapshots/e2e__feature_tests__list_local_with_nothing_installed__Bash.snap
new file mode 100644
index 0000000..791dc3e
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__list_local_with_nothing_installed__Bash.snap
@@ -0,0 +1,9 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm env)"
+fnm ls
diff --git a/tests/snapshots/e2e__feature_tests__list_local_with_nothing_installed__Fish.snap b/tests/snapshots/e2e__feature_tests__list_local_with_nothing_installed__Fish.snap
new file mode 100644
index 0000000..0838a42
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__list_local_with_nothing_installed__Fish.snap
@@ -0,0 +1,6 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm env | source
+fnm ls
diff --git a/tests/snapshots/e2e__feature_tests__list_local_with_nothing_installed__PowerShell.snap b/tests/snapshots/e2e__feature_tests__list_local_with_nothing_installed__PowerShell.snap
new file mode 100644
index 0000000..f1014b9
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__list_local_with_nothing_installed__PowerShell.snap
@@ -0,0 +1,7 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm env | Out-String | Invoke-Expression
+fnm ls
diff --git a/tests/snapshots/e2e__feature_tests__list_local_with_nothing_installed__WinCmd.snap b/tests/snapshots/e2e__feature_tests__list_local_with_nothing_installed__WinCmd.snap
new file mode 100644
index 0000000..ce395b4
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__list_local_with_nothing_installed__WinCmd.snap
@@ -0,0 +1,6 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+FOR /f "tokens=*" %i IN ('fnm env') DO CALL %i
+fnm ls
diff --git a/tests/snapshots/e2e__feature_tests__list_local_with_nothing_installed__Zsh.snap b/tests/snapshots/e2e__feature_tests__list_local_with_nothing_installed__Zsh.snap
new file mode 100644
index 0000000..481dfdc
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__list_local_with_nothing_installed__Zsh.snap
@@ -0,0 +1,7 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm env)"
+fnm ls
diff --git a/tests/snapshots/e2e__feature_tests__log_level_error__Bash.snap b/tests/snapshots/e2e__feature_tests__log_level_error__Bash.snap
new file mode 100644
index 0000000..4ad4056
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__log_level_error__Bash.snap
@@ -0,0 +1,30 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm --log-level='error' env)"
+if [ "$(fnm install v8.11.3
+echo empty)" != "empty" ]; then
+    echo 'Expected fnm install to be "empty", Got: '"$(fnm install v8.11.3
+echo empty)"
+    exit 1
+fi
+
+if [ "$(fnm use v8.11.3
+echo empty)" != "empty" ]; then
+    echo 'Expected fnm use to be "empty", Got: '"$(fnm use v8.11.3
+echo empty)"
+    exit 1
+fi
+
+if [ "$(fnm alias v8.11.3 something
+echo empty)" != "empty" ]; then
+    echo 'Expected fnm alias to be "empty", Got: '"$(fnm alias v8.11.3 something
+echo empty)"
+    exit 1
+fi
+
+fnm alias abcd efg 2>&1 | grep 'Can'\''t find requested version'
diff --git a/tests/snapshots/e2e__feature_tests__log_level_error__Fish.snap b/tests/snapshots/e2e__feature_tests__log_level_error__Fish.snap
new file mode 100644
index 0000000..72e52e9
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__log_level_error__Fish.snap
@@ -0,0 +1,27 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm --log-level='error' env | source
+if test (fnm install v8.11.3
+echo empty) != "empty"
+    echo 'Expected fnm install to be "empty", Got: '(fnm install v8.11.3
+echo empty)
+    exit 1
+end
+
+if test (fnm use v8.11.3
+echo empty) != "empty"
+    echo 'Expected fnm use to be "empty", Got: '(fnm use v8.11.3
+echo empty)
+    exit 1
+end
+
+if test (fnm alias v8.11.3 something
+echo empty) != "empty"
+    echo 'Expected fnm alias to be "empty", Got: '(fnm alias v8.11.3 something
+echo empty)
+    exit 1
+end
+
+fnm alias abcd efg 2>&1 | grep 'Can'\''t find requested version'
diff --git a/tests/snapshots/e2e__feature_tests__log_level_error__PowerShell.snap b/tests/snapshots/e2e__feature_tests__log_level_error__PowerShell.snap
new file mode 100644
index 0000000..a0014c6
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__log_level_error__PowerShell.snap
@@ -0,0 +1,28 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm --log-level='error' env | Out-String | Invoke-Expression
+If ("$(fnm install v8.11.3
+echo empty)" -ne "empty") {
+    Write-Output ('Expected fnm install to be "empty", Got: ' + $(fnm install v8.11.3
+echo empty))
+    exit 1
+}
+
+If ("$(fnm use v8.11.3
+echo empty)" -ne "empty") {
+    Write-Output ('Expected fnm use to be "empty", Got: ' + $(fnm use v8.11.3
+echo empty))
+    exit 1
+}
+
+If ("$(fnm alias v8.11.3 something
+echo empty)" -ne "empty") {
+    Write-Output ('Expected fnm alias to be "empty", Got: ' + $(fnm alias v8.11.3 something
+echo empty))
+    exit 1
+}
+
+$($__out__ = $($($_tmp_err_action = $ErrorActionPreference;$ErrorActionPreference = "Continue";fnm alias abcd efg 2>&1;$ErrorActionPreference = $_tmp_err_action) | Select-String 'Can''t find requested version'); echo $__out__; if ($__out__ -eq $null){ exit 1 } else { $__out__ })
diff --git a/tests/snapshots/e2e__feature_tests__log_level_error__Zsh.snap b/tests/snapshots/e2e__feature_tests__log_level_error__Zsh.snap
new file mode 100644
index 0000000..01aacf2
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__log_level_error__Zsh.snap
@@ -0,0 +1,28 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm --log-level='error' env)"
+if [ "$(fnm install v8.11.3
+echo empty)" != "empty" ]; then
+    echo 'Expected fnm install to be "empty", Got: '"$(fnm install v8.11.3
+echo empty)"
+    exit 1
+fi
+
+if [ "$(fnm use v8.11.3
+echo empty)" != "empty" ]; then
+    echo 'Expected fnm use to be "empty", Got: '"$(fnm use v8.11.3
+echo empty)"
+    exit 1
+fi
+
+if [ "$(fnm alias v8.11.3 something
+echo empty)" != "empty" ]; then
+    echo 'Expected fnm alias to be "empty", Got: '"$(fnm alias v8.11.3 something
+echo empty)"
+    exit 1
+fi
+
+fnm alias abcd efg 2>&1 | grep 'Can'\''t find requested version'
diff --git a/tests/snapshots/e2e__feature_tests__log_level_quiet__Bash.snap b/tests/snapshots/e2e__feature_tests__log_level_quiet__Bash.snap
new file mode 100644
index 0000000..f999259
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__log_level_quiet__Bash.snap
@@ -0,0 +1,22 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm --log-level='quiet' env)"
+if [ "$(fnm install v8.11.3)" != "" ]; then
+    echo 'Expected fnm install to be "", Got: '"$(fnm install v8.11.3)"
+    exit 1
+fi
+
+if [ "$(fnm use v8.11.3)" != "" ]; then
+    echo 'Expected fnm use to be "", Got: '"$(fnm use v8.11.3)"
+    exit 1
+fi
+
+if [ "$(fnm alias v8.11.3 something)" != "" ]; then
+    echo 'Expected fnm alias to be "", Got: '"$(fnm alias v8.11.3 something)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__log_level_quiet__Fish.snap b/tests/snapshots/e2e__feature_tests__log_level_quiet__Fish.snap
new file mode 100644
index 0000000..95b529b
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__log_level_quiet__Fish.snap
@@ -0,0 +1,19 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm --log-level='quiet' env | source
+if test (fnm install v8.11.3) != ""
+    echo 'Expected fnm install to be "", Got: '(fnm install v8.11.3)
+    exit 1
+end
+
+if test (fnm use v8.11.3) != ""
+    echo 'Expected fnm use to be "", Got: '(fnm use v8.11.3)
+    exit 1
+end
+
+if test (fnm alias v8.11.3 something) != ""
+    echo 'Expected fnm alias to be "", Got: '(fnm alias v8.11.3 something)
+    exit 1
+end
diff --git a/tests/snapshots/e2e__feature_tests__log_level_quiet__PowerShell.snap b/tests/snapshots/e2e__feature_tests__log_level_quiet__PowerShell.snap
new file mode 100644
index 0000000..3f80cb2
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__log_level_quiet__PowerShell.snap
@@ -0,0 +1,20 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm --log-level='quiet' env | Out-String | Invoke-Expression
+If ("$(fnm install v8.11.3)" -ne "") {
+    Write-Output ('Expected fnm install to be "", Got: ' + $(fnm install v8.11.3))
+    exit 1
+}
+
+If ("$(fnm use v8.11.3)" -ne "") {
+    Write-Output ('Expected fnm use to be "", Got: ' + $(fnm use v8.11.3))
+    exit 1
+}
+
+If ("$(fnm alias v8.11.3 something)" -ne "") {
+    Write-Output ('Expected fnm alias to be "", Got: ' + $(fnm alias v8.11.3 something))
+    exit 1
+}
diff --git a/tests/snapshots/e2e__feature_tests__log_level_quiet__Zsh.snap b/tests/snapshots/e2e__feature_tests__log_level_quiet__Zsh.snap
new file mode 100644
index 0000000..de451f8
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__log_level_quiet__Zsh.snap
@@ -0,0 +1,20 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm --log-level='quiet' env)"
+if [ "$(fnm install v8.11.3)" != "" ]; then
+    echo 'Expected fnm install to be "", Got: '"$(fnm install v8.11.3)"
+    exit 1
+fi
+
+if [ "$(fnm use v8.11.3)" != "" ]; then
+    echo 'Expected fnm use to be "", Got: '"$(fnm use v8.11.3)"
+    exit 1
+fi
+
+if [ "$(fnm alias v8.11.3 something)" != "" ]; then
+    echo 'Expected fnm alias to be "", Got: '"$(fnm alias v8.11.3 something)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__matching_dotfiles__Bash.snap b/tests/snapshots/e2e__feature_tests__matching_dotfiles__Bash.snap
new file mode 100644
index 0000000..c664ba9
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__matching_dotfiles__Bash.snap
@@ -0,0 +1,16 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm env)"
+echo 11.10.0 > .nvmrc
+echo 11.10.0 > .node-version
+fnm install
+fnm use
+if [ "$(node -v)" != "v11.10.0" ]; then
+    echo 'Expected Node version to be "v11.10.0", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__matching_dotfiles__Fish.snap b/tests/snapshots/e2e__feature_tests__matching_dotfiles__Fish.snap
new file mode 100644
index 0000000..a7e0e00
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__matching_dotfiles__Fish.snap
@@ -0,0 +1,13 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm env | source
+echo 11.10.0 > .nvmrc
+echo 11.10.0 > .node-version
+fnm install
+fnm use
+if test (node -v) != "v11.10.0"
+    echo 'Expected Node version to be "v11.10.0", Got: '(node -v)
+    exit 1
+end
diff --git a/tests/snapshots/e2e__feature_tests__matching_dotfiles__PowerShell.snap b/tests/snapshots/e2e__feature_tests__matching_dotfiles__PowerShell.snap
new file mode 100644
index 0000000..1ed3c99
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__matching_dotfiles__PowerShell.snap
@@ -0,0 +1,14 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm env | Out-String | Invoke-Expression
+echo '11.10.0' > '.nvmrc'
+echo '11.10.0' > '.node-version'
+fnm install
+fnm use
+If ("$(node -v)" -ne "v11.10.0") {
+    Write-Output ('Expected Node version to be "v11.10.0", Got: ' + $(node -v))
+    exit 1
+}
diff --git a/tests/snapshots/e2e__feature_tests__matching_dotfiles__WinCmd.snap b/tests/snapshots/e2e__feature_tests__matching_dotfiles__WinCmd.snap
new file mode 100644
index 0000000..1640dfa
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__matching_dotfiles__WinCmd.snap
@@ -0,0 +1,14 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+FOR /f "tokens=*" %i IN ('fnm env') DO CALL %i
+echo 11.10.0 > .nvmrc
+echo 11.10.0 > .node-version
+fnm install
+fnm use
+node -v | findstr v11.10.0
+if %errorlevel% neq 0 (
+    echo Node version does not match "v11.10.0"
+    exit 1
+)
diff --git a/tests/snapshots/e2e__feature_tests__matching_dotfiles__Zsh.snap b/tests/snapshots/e2e__feature_tests__matching_dotfiles__Zsh.snap
new file mode 100644
index 0000000..b1c5936
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__matching_dotfiles__Zsh.snap
@@ -0,0 +1,14 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm env)"
+echo 11.10.0 > .nvmrc
+echo 11.10.0 > .node-version
+fnm install
+fnm use
+if [ "$(node -v)" != "v11.10.0" ]; then
+    echo 'Expected Node version to be "v11.10.0", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__multishell__Bash.snap b/tests/snapshots/e2e__feature_tests__multishell__Bash.snap
new file mode 100644
index 0000000..a22659d
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__multishell__Bash.snap
@@ -0,0 +1,25 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm env)"
+fnm install v8.11.3
+fnm install v11.9.0
+fnm use v8.11.3
+echo 'set -e
+shopt -s expand_aliases
+
+eval "$(fnm env)"
+fnm use 11
+if [ "$(node -v)" '\!'= "v11.9.0" ]; then
+    echo '\''Expected Node version to be "v11.9.0", Got: '\''"$(node -v)"
+    exit 1
+fi
+' | bash
+if [ "$(node -v)" != "v8.11.3" ]; then
+    echo 'Expected Node version to be "v8.11.3", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__multishell__Fish.snap b/tests/snapshots/e2e__feature_tests__multishell__Fish.snap
new file mode 100644
index 0000000..3da9489
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__multishell__Fish.snap
@@ -0,0 +1,20 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm env | source
+fnm install v8.11.3
+fnm install v11.9.0
+fnm use v8.11.3
+fish -c '
+fnm env | source
+fnm use 11
+if test (node -v) '\!'= "v11.9.0"
+    echo '\''Expected Node version to be "v11.9.0", Got: '\''(node -v)
+    exit 1
+end
+'
+if test (node -v) != "v8.11.3"
+    echo 'Expected Node version to be "v8.11.3", Got: '(node -v)
+    exit 1
+end
diff --git a/tests/snapshots/e2e__feature_tests__multishell__PowerShell.snap b/tests/snapshots/e2e__feature_tests__multishell__PowerShell.snap
new file mode 100644
index 0000000..617a04c
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__multishell__PowerShell.snap
@@ -0,0 +1,21 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm env | Out-String | Invoke-Expression
+fnm install v8.11.3
+fnm install v11.9.0
+fnm use v8.11.3
+echo '$ErrorActionPreference = "Stop"
+fnm env | Out-String | Invoke-Expression
+fnm use 11
+If ("$(node -v)" -ne "v11.9.0") {
+    Write-Output (''Expected Node version to be "v11.9.0", Got: '' + $(node -v))
+    exit 1
+}
+' | powershell -NoProfile
+If ("$(node -v)" -ne "v8.11.3") {
+    Write-Output ('Expected Node version to be "v8.11.3", Got: ' + $(node -v))
+    exit 1
+}
diff --git a/tests/snapshots/e2e__feature_tests__multishell__Zsh.snap b/tests/snapshots/e2e__feature_tests__multishell__Zsh.snap
new file mode 100644
index 0000000..6b8bbff
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__multishell__Zsh.snap
@@ -0,0 +1,21 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm env)"
+fnm install v8.11.3
+fnm install v11.9.0
+fnm use v8.11.3
+echo 'set -e
+eval "$(fnm env)"
+fnm use 11
+if [ "$(node -v)" '\!'= "v11.9.0" ]; then
+    echo '\''Expected Node version to be "v11.9.0", Got: '\''"$(node -v)"
+    exit 1
+fi
+' | zsh
+if [ "$(node -v)" != "v8.11.3" ]; then
+    echo 'Expected Node version to be "v8.11.3", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__nvmrc__Bash.snap b/tests/snapshots/e2e__feature_tests__nvmrc__Bash.snap
new file mode 100644
index 0000000..7e349e4
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__nvmrc__Bash.snap
@@ -0,0 +1,15 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm env)"
+echo v8.11.3 > .nvmrc
+fnm install
+fnm use
+if [ "$(node -v)" != "v8.11.3" ]; then
+    echo 'Expected Node version to be "v8.11.3", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__nvmrc__Fish.snap b/tests/snapshots/e2e__feature_tests__nvmrc__Fish.snap
new file mode 100644
index 0000000..f7cb7cb
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__nvmrc__Fish.snap
@@ -0,0 +1,12 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm env | source
+echo v8.11.3 > .nvmrc
+fnm install
+fnm use
+if test (node -v) != "v8.11.3"
+    echo 'Expected Node version to be "v8.11.3", Got: '(node -v)
+    exit 1
+end
diff --git a/tests/snapshots/e2e__feature_tests__nvmrc__PowerShell.snap b/tests/snapshots/e2e__feature_tests__nvmrc__PowerShell.snap
new file mode 100644
index 0000000..4932570
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__nvmrc__PowerShell.snap
@@ -0,0 +1,13 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm env | Out-String | Invoke-Expression
+echo 'v8.11.3' > '.nvmrc'
+fnm install
+fnm use
+If ("$(node -v)" -ne "v8.11.3") {
+    Write-Output ('Expected Node version to be "v8.11.3", Got: ' + $(node -v))
+    exit 1
+}
diff --git a/tests/snapshots/e2e__feature_tests__nvmrc__WinCmd.snap b/tests/snapshots/e2e__feature_tests__nvmrc__WinCmd.snap
new file mode 100644
index 0000000..8561918
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__nvmrc__WinCmd.snap
@@ -0,0 +1,13 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+FOR /f "tokens=*" %i IN ('fnm env') DO CALL %i
+echo v8.11.3 > .nvmrc
+fnm install
+fnm use
+node -v | findstr v8.11.3
+if %errorlevel% neq 0 (
+    echo Node version does not match "v8.11.3"
+    exit 1
+)
diff --git a/tests/snapshots/e2e__feature_tests__nvmrc__Zsh.snap b/tests/snapshots/e2e__feature_tests__nvmrc__Zsh.snap
new file mode 100644
index 0000000..afe254f
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__nvmrc__Zsh.snap
@@ -0,0 +1,13 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm env)"
+echo v8.11.3 > .nvmrc
+fnm install
+fnm use
+if [ "$(node -v)" != "v8.11.3" ]; then
+    echo 'Expected Node version to be "v8.11.3", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__partial_semver__Bash.snap b/tests/snapshots/e2e__feature_tests__partial_semver__Bash.snap
new file mode 100644
index 0000000..3eb9820
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__partial_semver__Bash.snap
@@ -0,0 +1,14 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm env)"
+fnm install 6
+fnm use 6
+if [ "$(node -v)" != "v6.17.1" ]; then
+    echo 'Expected Node version to be "v6.17.1", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__partial_semver__Fish.snap b/tests/snapshots/e2e__feature_tests__partial_semver__Fish.snap
new file mode 100644
index 0000000..b79487b
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__partial_semver__Fish.snap
@@ -0,0 +1,11 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm env | source
+fnm install 6
+fnm use 6
+if test (node -v) != "v6.17.1"
+    echo 'Expected Node version to be "v6.17.1", Got: '(node -v)
+    exit 1
+end
diff --git a/tests/snapshots/e2e__feature_tests__partial_semver__PowerShell.snap b/tests/snapshots/e2e__feature_tests__partial_semver__PowerShell.snap
new file mode 100644
index 0000000..f98996c
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__partial_semver__PowerShell.snap
@@ -0,0 +1,12 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm env | Out-String | Invoke-Expression
+fnm install 6
+fnm use 6
+If ("$(node -v)" -ne "v6.17.1") {
+    Write-Output ('Expected Node version to be "v6.17.1", Got: ' + $(node -v))
+    exit 1
+}
diff --git a/tests/snapshots/e2e__feature_tests__partial_semver__WinCmd.snap b/tests/snapshots/e2e__feature_tests__partial_semver__WinCmd.snap
new file mode 100644
index 0000000..89784ea
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__partial_semver__WinCmd.snap
@@ -0,0 +1,12 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+FOR /f "tokens=*" %i IN ('fnm env') DO CALL %i
+fnm install 6
+fnm use 6
+node -v | findstr v6.17.1
+if %errorlevel% neq 0 (
+    echo Node version does not match "v6.17.1"
+    exit 1
+)
diff --git a/tests/snapshots/e2e__feature_tests__partial_semver__Zsh.snap b/tests/snapshots/e2e__feature_tests__partial_semver__Zsh.snap
new file mode 100644
index 0000000..157bee0
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__partial_semver__Zsh.snap
@@ -0,0 +1,12 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm env)"
+fnm install 6
+fnm use 6
+if [ "$(node -v)" != "v6.17.1" ]; then
+    echo 'Expected Node version to be "v6.17.1", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__system_node__Bash.snap b/tests/snapshots/e2e__feature_tests__system_node__Bash.snap
new file mode 100644
index 0000000..bcf1517
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__system_node__Bash.snap
@@ -0,0 +1,15 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm env)"
+fnm install 10
+fnm use 10
+fnm use system
+if [ "$(node -v)" != "custom node" ]; then
+    echo 'Expected Node version to be "custom node", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__system_node__Fish.snap b/tests/snapshots/e2e__feature_tests__system_node__Fish.snap
new file mode 100644
index 0000000..c4c091a
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__system_node__Fish.snap
@@ -0,0 +1,12 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm env | source
+fnm install 10
+fnm use 10
+fnm use system
+if test (node -v) != "custom node"
+    echo 'Expected Node version to be "custom node", Got: '(node -v)
+    exit 1
+end
diff --git a/tests/snapshots/e2e__feature_tests__system_node__PowerShell.snap b/tests/snapshots/e2e__feature_tests__system_node__PowerShell.snap
new file mode 100644
index 0000000..6946343
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__system_node__PowerShell.snap
@@ -0,0 +1,13 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm env | Out-String | Invoke-Expression
+fnm install 10
+fnm use 10
+fnm use system
+If ("$(node -v)" -ne "custom node") {
+    Write-Output ('Expected Node version to be "custom node", Got: ' + $(node -v))
+    exit 1
+}
diff --git a/tests/snapshots/e2e__feature_tests__system_node__Zsh.snap b/tests/snapshots/e2e__feature_tests__system_node__Zsh.snap
new file mode 100644
index 0000000..58bdf12
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__system_node__Zsh.snap
@@ -0,0 +1,13 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm env)"
+fnm install 10
+fnm use 10
+fnm use system
+if [ "$(node -v)" != "custom node" ]; then
+    echo 'Expected Node version to be "custom node", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__use_nvmrc_lts__Bash.snap b/tests/snapshots/e2e__feature_tests__use_nvmrc_lts__Bash.snap
new file mode 100644
index 0000000..48b81eb
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__use_nvmrc_lts__Bash.snap
@@ -0,0 +1,12 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm env)"
+echo lts/dubnium > .nvmrc
+fnm install
+fnm use
+fnm ls | grep lts-dubnium
diff --git a/tests/snapshots/e2e__feature_tests__use_nvmrc_lts__Fish.snap b/tests/snapshots/e2e__feature_tests__use_nvmrc_lts__Fish.snap
new file mode 100644
index 0000000..c04f469
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__use_nvmrc_lts__Fish.snap
@@ -0,0 +1,9 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm env | source
+echo lts/dubnium > .nvmrc
+fnm install
+fnm use
+fnm ls | grep lts-dubnium
diff --git a/tests/snapshots/e2e__feature_tests__use_nvmrc_lts__PowerShell.snap b/tests/snapshots/e2e__feature_tests__use_nvmrc_lts__PowerShell.snap
new file mode 100644
index 0000000..75e9577
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__use_nvmrc_lts__PowerShell.snap
@@ -0,0 +1,10 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm env | Out-String | Invoke-Expression
+echo 'lts/dubnium' > '.nvmrc'
+fnm install
+fnm use
+$($__out__ = $(fnm ls | Select-String 'lts-dubnium'); echo $__out__; if ($__out__ -eq $null){ exit 1 } else { $__out__ })
diff --git a/tests/snapshots/e2e__feature_tests__use_nvmrc_lts__Zsh.snap b/tests/snapshots/e2e__feature_tests__use_nvmrc_lts__Zsh.snap
new file mode 100644
index 0000000..d531fc6
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__use_nvmrc_lts__Zsh.snap
@@ -0,0 +1,10 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm env)"
+echo lts/dubnium > .nvmrc
+fnm install
+fnm use
+fnm ls | grep lts-dubnium
diff --git a/tests/snapshots/e2e__feature_tests__use_on_cd_dot_node_version__Bash.snap b/tests/snapshots/e2e__feature_tests__use_on_cd_dot_node_version__Bash.snap
new file mode 100644
index 0000000..4e896e7
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__use_on_cd_dot_node_version__Bash.snap
@@ -0,0 +1,16 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm env --use-on-cd)"
+mkdir inner_path
+echo v8.11.3 > inner_path/.node-version
+fnm install v8.11.3
+cd inner_path
+if [ "$(node -v)" != "v8.11.3" ]; then
+    echo 'Expected Node version to be "v8.11.3", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__use_on_cd_dot_node_version__Fish.snap b/tests/snapshots/e2e__feature_tests__use_on_cd_dot_node_version__Fish.snap
new file mode 100644
index 0000000..9c9e965
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__use_on_cd_dot_node_version__Fish.snap
@@ -0,0 +1,13 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm env --use-on-cd | source
+mkdir inner_path
+echo v8.11.3 > inner_path/.node-version
+fnm install v8.11.3
+cd inner_path
+if test (node -v) != "v8.11.3"
+    echo 'Expected Node version to be "v8.11.3", Got: '(node -v)
+    exit 1
+end
diff --git a/tests/snapshots/e2e__feature_tests__use_on_cd_dot_node_version__PowerShell.snap b/tests/snapshots/e2e__feature_tests__use_on_cd_dot_node_version__PowerShell.snap
new file mode 100644
index 0000000..23036d2
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__use_on_cd_dot_node_version__PowerShell.snap
@@ -0,0 +1,14 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm env --use-on-cd | Out-String | Invoke-Expression
+mkdir inner_path
+echo 'v8.11.3' > 'inner_path/.node-version'
+fnm install v8.11.3
+cd inner_path
+If ("$(node -v)" -ne "v8.11.3") {
+    Write-Output ('Expected Node version to be "v8.11.3", Got: ' + $(node -v))
+    exit 1
+}
diff --git a/tests/snapshots/e2e__feature_tests__use_on_cd_dot_node_version__Zsh.snap b/tests/snapshots/e2e__feature_tests__use_on_cd_dot_node_version__Zsh.snap
new file mode 100644
index 0000000..d7514ec
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__use_on_cd_dot_node_version__Zsh.snap
@@ -0,0 +1,14 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm env --use-on-cd)"
+mkdir inner_path
+echo v8.11.3 > inner_path/.node-version
+fnm install v8.11.3
+cd inner_path
+if [ "$(node -v)" != "v8.11.3" ]; then
+    echo 'Expected Node version to be "v8.11.3", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__use_on_cd_nvmrc__Bash.snap b/tests/snapshots/e2e__feature_tests__use_on_cd_nvmrc__Bash.snap
new file mode 100644
index 0000000..44fd616
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__use_on_cd_nvmrc__Bash.snap
@@ -0,0 +1,16 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+shopt -s expand_aliases
+
+eval "$(fnm env --use-on-cd)"
+mkdir inner_path
+echo v8.11.3 > inner_path/.nvmrc
+fnm install v8.11.3
+cd inner_path
+if [ "$(node -v)" != "v8.11.3" ]; then
+    echo 'Expected Node version to be "v8.11.3", Got: '"$(node -v)"
+    exit 1
+fi
diff --git a/tests/snapshots/e2e__feature_tests__use_on_cd_nvmrc__Fish.snap b/tests/snapshots/e2e__feature_tests__use_on_cd_nvmrc__Fish.snap
new file mode 100644
index 0000000..aad559b
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__use_on_cd_nvmrc__Fish.snap
@@ -0,0 +1,13 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+fnm env --use-on-cd | source
+mkdir inner_path
+echo v8.11.3 > inner_path/.nvmrc
+fnm install v8.11.3
+cd inner_path
+if test (node -v) != "v8.11.3"
+    echo 'Expected Node version to be "v8.11.3", Got: '(node -v)
+    exit 1
+end
diff --git a/tests/snapshots/e2e__feature_tests__use_on_cd_nvmrc__PowerShell.snap b/tests/snapshots/e2e__feature_tests__use_on_cd_nvmrc__PowerShell.snap
new file mode 100644
index 0000000..5a31d6c
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__use_on_cd_nvmrc__PowerShell.snap
@@ -0,0 +1,14 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+$ErrorActionPreference = "Stop"
+fnm env --use-on-cd | Out-String | Invoke-Expression
+mkdir inner_path
+echo 'v8.11.3' > 'inner_path/.nvmrc'
+fnm install v8.11.3
+cd inner_path
+If ("$(node -v)" -ne "v8.11.3") {
+    Write-Output ('Expected Node version to be "v8.11.3", Got: ' + $(node -v))
+    exit 1
+}
diff --git a/tests/snapshots/e2e__feature_tests__use_on_cd_nvmrc__Zsh.snap b/tests/snapshots/e2e__feature_tests__use_on_cd_nvmrc__Zsh.snap
new file mode 100644
index 0000000..4e05c36
--- /dev/null
+++ b/tests/snapshots/e2e__feature_tests__use_on_cd_nvmrc__Zsh.snap
@@ -0,0 +1,14 @@
+---
+source: tests/e2e.rs
+expression: "&source.trim()"
+---
+set -e
+eval "$(fnm env --use-on-cd)"
+mkdir inner_path
+echo v8.11.3 > inner_path/.nvmrc
+fnm install v8.11.3
+cd inner_path
+if [ "$(node -v)" != "v8.11.3" ]; then
+    echo 'Expected Node version to be "v8.11.3", Got: '"$(node -v)"
+    exit 1
+fi