Fails when a file uses the PackageImports extension

[ilyakooo0]

originally posted: https://github.com/digital-asset/ghcide/issues/569

I am fairly certain that the following error is related to the use of the PackageImports extension in the currently open file.

ghcide: very bad
CallStack (from HasCallStack):
  error, called at src/Development/IDE/Import/FindImports.hs:78:23 in ghcide-0.1.0-B7KZ16czJifIz5r3YZOrKr:Development.IDE.Import.FindImports

[mpickering]

How do I reproduce this?

[ilyakooo0]

It seems to be reproducible by opening the following file in a project:

{-# LANGUAGE PackageImports #-}

module Foo
  (
  ) where

import "aeson" Data.Aeson

[mpickering]

@ilyakooo0 Can you try building from master again? I added a slightly better diagnostic which may help us see what's going on.

[ilyakooo0]

By master you mean hls, right?

[mpickering]

Yes, sorry about that confusion.

[ilyakooo0]

ghcide: mkImportDirs: main
CallStack (from HasCallStack):
  error, called at src/Development/IDE/Import/FindImports.hs:86:23 in ghcide-0.1.0-1cZQndkFIIrCG5hVUVKcRi:Development.IDE.Import.FindImports

[mpickering]

Thanks, that's very useful. Hopefully will get around to fixing it this week. It is probably safe to not error in this case if you want to make progress.

[mpickering]

Can you try this patch?

#45

[ilyakooo0]

I can confirm that the issue is not present in the wip/refine-package-imports branch.