Fix hls build for ghc 9.2

[hamishmack]

This adds flags: -haddockcomments to the default cabal.project of haskell-language-server to fix building on ghc 9.2

[michaelpj]

Is this an upstream issue?

[hamishmack]

I think it is covered by haskell/haskell-language-server#2982

[michaelpj]

I don't understand why HLS isn't broken in the same way, then.

[michaelpj]

Since they just have the one cabal.project without this flag, now.

[hamishmack]

It looks this guard against building with 9.2 https://github.com/haskell/haskell-language-server/blob/e55004a0cc9b727423a16cec4f5103a4df685eb6/plugins/hls-haddock-comments-plugin/hls-haddock-comments-plugin.cabal#L21-L24 is not in hackage https://hackage.haskell.org/package/hls-haddock-comments-plugin-1.0.1.0/hls-haddock-comments-plugin.cabal

[michaelpj]

Ah, maybe that snuck in on master only.

[hamishmack]

bors try

[iohk-bors]

try

Build failed:

• buildkite/haskell-dot-nix

[hamishmack]

bors try

[iohk-bors]

try

Build succeeded:

• buildkite/haskell-dot-nix
• ci/hydra:Cardano:haskell-nix:required