Fix alias paths (#72)

executable/Alias.re

@@ -2,7 +2,11 @@ open Fnm;
 
 let run = (~name, ~version) => {
   let version = Versions.format(version);
-  let versionPath = Filename.concat(Directories.nodeVersions, version);
+  let versionPath =
+    Filename.concat(
+      Filename.concat(Directories.nodeVersions, version),
+      "installation",
+    );
   let%lwt versionInstalled = Lwt_unix.file_exists(versionPath);
 
   if (!versionInstalled) {

feature_tests/aliases/run.sh

@@ -0,0 +1,14 @@
+#!/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
+
+VERSIONS_INSTALLED=$(fnm ls)
+
+echo "$VERSIONS_INSTALLED" | grep 8.11.3 | grep oldie
+echo "$VERSIONS_INSTALLED" | grep 6.11.3 | grep older

library/Versions.re

@@ -74,6 +74,7 @@ module Aliases = {
            versionName:
              Filename.concat(Directories.aliases, alias)
              |> Fs.realpath
+             |> Filename.dirname
              |> Filename.basename,
          };
        })