Version 1.1.3 of package Haskell-Ts-Mode has just been released in NonGNU ELPA. You can now find it in M-x list-packages RET.
Haskell-Ts-Mode describes itself as: ====================================== A treesit based major mode for haskell ====================================== More at https://elpa.nongnu.org/nongnu/haskell-ts-mode.html ## Summary: This is a major mode that uses treesitter to provide all the basic major mode stuff, like indentation, font lock, etc... It uses the grammer at: https://github.com/tree-sitter/tree-sitter-haskell ## Recent NEWS: [Not provided 🙁]