tree-sitter

[unhammer]

Now that tree-sitter is included in Emacs 29 it'd be nice to use that for Haskell and have it all in one place. There's a wip at
https://github.com/erikbackman/haskell-ts-mode – could that be used as a basis?

[purcell]

Thanks for the pointer. It's not good practice to include code within a package that requires new Emacs versions when the package overall aims for compatibility with older Emacsen. (Partly because it can't byte-compile on the old versions, but also because it makes the deps subjective rather than authoritative.) So as a general preference, a separate package which adds tree-sitter support would be preferable.

From my side, I haven't spent time digging into this pre-release Emacs functionality yet but I can see how it will be significantly useful in the coming years. Which is also to say that I'm probably not the person to work on more "official" support for TS in haskell-mode. (I work less and less with Haskell now, and yet still somehow qualify as the most active maintainer for this repo these days, which probably isn't very sustainable.)