Enable stylish-haskell for ghc-9.10 and ghc-9.12

[GuillaumedeVolpiano]

With the release of stylish-haskell-0.15.0.0, it now builds with ghc-lib-parser-9.10, so we can enable the plugin for ghc-9.10.
Note that a ghc-lib-parser-9.12 version should be released soon.

[GuillaumedeVolpiano]

@fendor : I guess the tests will need to be rerun later, cabal is failing to find stylish-haskell-0.15.0.0, which was added to hackage yesterday…

[fendor]

@GuillaumedeVolpiano You have to update the index-state in the cabal.project file. You can find your own index-state by running cabal update. You can just set that.
The CI will never find the newer version until you update the index-state in cabal.project, since we are intentionally freezing our dependencies to avoid build failures.

[GuillaumedeVolpiano]

@jhrcek : stylish-haskell now needs Cabal-3.14, but this conflicts with a lot of things here. I can get stylish-haskell to compile nicely with Cabal-3.12 with the following changes to lib/Language/Haskell/Stylish/Config/Cabal.hs
`#if MIN_VERSION_Cabal(3,14,0)

  let projectRoot = Just $ Cabal.makeSymbolicPath p

  potentialCabalFile <- Cabal.findPackageDesc projectRoot

  case potentialCabalFile of

    Right cabalFile -> pure $ Just $

      Cabal.interpretSymbolicPath projectRoot cabalFile

    _ -> go (p : searched) ps

#else

 let projectRoot = p

 potentialCabalFile <- Cabal.findPackageDesc projectRoot

 case potentialCabalFile of

   Right cabalFile -> pure $ Just cabalFile

   _ -> go (p : searched) ps

#endif`

But I guess this kindof defeats your purpose. If not, I'll submit a PR there, hopefully we get a 0.15.0.1 version and everything will be simple then.

@fendor : I guess we need a Draft label here for now.

[jhrcek]

Oh, that's not good. I guess that Jasper proactively bumped to the latest version of cabal syntax in haskell/stylish-haskell#489 before merging my 9.10 support PR.

I wonder if we could broaden the accepted version range of stylish-haskell's Cabal dependency (not really sure how Cabal stuff is used in stylish-haskell)?

[GuillaumedeVolpiano]

@fendor @michaelpj @jhrcek : this is now ready for review

[fendor]

Lgtm! When can we drop support for stylish-haskell 0.14? Like, which ghc version is only compatible with the older stylish-haskell version?

[GuillaumedeVolpiano]

9.4

[jhrcek]

Great work, including pushing the work on upstream dependencies 👍