add haskell support

[quangIO]

No description provided.

[jcs090218]

You might want to align this? :)

[ubolonton]

Thanks for the PR!
Haskell grammars seem to be broken on some platforms though.
I'll check this after the CI pipelines are fixed. They are currently broken after this repo is moved to an org.

[quangIO]

On MacOS, I think the CI also need to use gcc instead of clang. E.g. brew install gcc && ln -sf /usr/local/bin/gcc-11 /usr/local/bin/gcc

[iyefrat]

This PR seems to have passed CI. Has the problem been fixed or is this a false positive or something?

Also @quangIO there's a merge conflict now.

Thanks for submitting this! Can't wait for it to get merged.

Edit: ah, it seems that the successful CI is from when this PR was first submitted, which was before the move to an org. my bad.

[ubolonton]

Yeah, it passed when CI was not properly set up to fail on errors.

[iyefrat]

Is the CI set up properly now? given the fact that this pr is not that complicated but needs to have conflicts fixed, I'd be glad to submit a conflict-free version if it could get in that way.

[quangIO]

@iyefrat I resolved the conflict. However, CI could still fail. Since Haskell isn't my main programming languages nowadays, if you want to continue to work on this, perhaps you could help me fix the CI (I am not familiar with Azure Pipeline). Note that tree-sitter-haskell uses gcc and needs at least C++14.

By the way, the CI takes forever to build Emacs. We should have some caching to save build time

[ubolonton]

Note that tree-sitter-haskell uses gcc and needs at least C++14.

Thanks for investigating!

By the way, the CI takes forever to build Emacs. We should have some caching to save build time

It was originally set up to build Emacs from source because most distros disabled dynamic module support. Perhaps that has changed, in which case we don't need to build Emacs from source anymore.

[ZachFontenot]

Hey there, I haven't looked into the particulars, but maybe this PR tree-sitter/tree-sitter-haskell#62 has made it easier to build this?

[ubolonton]

Thanks for the info. I added it in #70.

[unhammer]

It's missing the queries and entry in tree-sitter-langs--init-major-mode-alist though. I just tried it, and it seems to work, even handles TemplateHaskell better than the regular emacs haskell-mode.