Run ghcide under a nix shell

[moodmosaic]

As per @novadiscovery fork (@regnat novainsilico@908bfa2)

@@ -22,7 +22,7 @@ class GhcideAutoLanguageClient
  startServerProcess(projectPath) {	  startServerProcess(projectPath) {
    let proc =	    let proc =
      (require("child_process")).spawn(	      (require("child_process")).spawn(
-        "ghcide", ["--lsp"],  { "cwd" : projectPath });
+        "nix-shell", ["--run", "ghcide --lsp"],  { "cwd" : projectPath });

    return proc;	    return proc;
  }

we could probably add a setting which allows to override how ghcide is invoked.

[thufschmitt]

Thanks for the notice :)

The fork was just a dirty experiment to try ghcide on an internal project, but the experiment seems successful, so it would be really nice to directly have this configurable rather than maintaining a fork

[moodmosaic]

It could be also as an option (checkbox) e.g. Use nix-shell or something(?)

[thufschmitt]

I think a text field to allow for an arbitrary command-line would be nicer as I there are other setups that might require a different command − for example the convention for running ghcide with bazel seems to be to have a .ghcide script in the directory (see tweag/rules_haskell#1262).

[moodmosaic]

Perhaps two text fields, one for the actual command, and one for the comma separated args.

e.g.

 cmd: ghcide
args: --lsp

 cmd: nix-shell
args: --run, ghcide --lsp

What do you think? 😃

[fredericcogny]

Yes that would be lovely

[moodmosaic]

Agreed 🚀

[moodmosaic]

@regnat, @fredericcogny, here's what we need, looks good to you? 🤓

[thufschmitt]

Looks awesome 👍 :)

[moodmosaic]

@regnat, if you can, it'd be nice if you can test #4 or if you can show me an easy way to test it myself. I haven't used Nix yet (perhaps now's the right time) 😃

[moodmosaic]

Released as [email protected] 🌮 https://atom.io/packages/ide-haskell-ghcide

[moodmosaic]

FYI, I'm going to archive this project as per @ndmitchell's announcement and the haskell-language-server direction in general. I just released haskell for Atom with

• haskell-language-server-wrapper as the default
• options to run under a nix-shell, ghcide (backwards compatible with this package)

🎉