Add support for Haskell

[wenkokke]

There is a tree-sitter grammar for Haskell.

What would need to be done to add support for this grammar in emacs-tree-sitter?

[GTrunSec]

adding the hasekll support by yourself.
https://github.com/GTrunSec/emacs-tree-sitter/blob/master/bin/devshell.toml#L55

[ubolonton]

That grammar is not included in the bundle because there are issues with building it on GitHub Actions emacs-tree-sitter/tree-sitter-langs#16 (comment).

You can try compiling it yourself and then modifying tree-sitter-load-path.