Language server support for cabal.project files

[VeryMilkyJoe]

It would be nice to have language server support for cabal.project files in the same manner as we provide for .cabal files.
My idea is to create a hls-cabal-project-plugin which should function similarly to the hls-cabal-plugin.

Some features I have in mind:

• completions of
  • keywords
  • filepaths
  • enum values
• diagnostics
• syntax highlighting

[NicoSantamaria]

Hello! I am interested in working on this issue for GSoC this summer. As I research for my proposal, do you have any suggestions for resources or related issues that might be helpful? I know, for example, that hls-cabal-plugin can provide a useful guide. Thank you!

[VeryMilkyJoe]

Hi, that's great to hear!
I can recommended issues #4526 and #4479 (which I have also recommended to some other interested students), trying to work on one of these could be a good introduction to the cabal plugin codebase.