Upgrade to ghc 9.12

[GuillaumedeVolpiano]

Building on #480, this makes stylish-haskell functionally complete for ghc-9.12. Only one failing test left.

[Miezhiko]

tested with my setup it works \o/ thank you

[GuillaumedeVolpiano]

tested with my setup it works \o/ thank you

Nearly. There is a niche issue when you have a comment between the data declaration and the first constructor.

[GuillaumedeVolpiano]

@Miezhiko Ignore my previous comment. All tests pass. Insert victory danse here.

[GuillaumedeVolpiano]

@jaspervdj : this should be ready for review.
@jhrcek : happy to take any suggestions you might have.

[jaspervdj]

@GuillaumedeVolpiano Thanks a lot! I will cut a release (v0.15.0.0) from main before merging this in.

[jhrcek]

Thank you, looks great.
Just a small suggestion.

[jaspervdj]

Thanks a lot!

[GuillaumedeVolpiano]

I had removed Data.List.foldl' from the imports of SimpleAlign, turns out ghc 9.8 still needs it, so I brought it back

[GuillaumedeVolpiano]

Oh, so we're hitting the same bug with ghc-lib-parser-9.12 and ghc-9.8 that I'm hitting on Gentoo.

digital-asset/ghc-lib#595

Shall we just limit the versions to ghc-9.10 and ghc-9.12 until ghc-lib makes a release fixing this? I'll see if I can patch it, but it might take time to get to release. What do you think?

[jaspervdj]

Okay, yeah, I think limiting it is fine given that we just made a release supporting ghc-9.6 and ghc-9.8.

[GuillaumedeVolpiano]

Done

[Mikolaj]

Well done!

[jaspervdj]

Released as v0.15.1.0 -- thanks a lot @GuillaumedeVolpiano!

[GuillaumedeVolpiano]

Also the issue with ghc-lib-parser should be fixed soon