I highly recommend haskell-vim-now [1]. The author has a nice demo showcasing this setup, along with his virtual pair-coding environment [2]. With one install

I highly recommend haskell-vim-now [1]. The author has a nice demo showcasing this setup, along with his virtual pair-coding environment [2]. With one install command, you get a polished Vim/Haskell setup with tab completion, type inspection, Hoogle, hinting, unicode symbols, etc. Also has a nice dark theme. In fact, I use it as my go-to Vim configuration on new systems, even outside of Haskell. It also lets you pipe code to the Haskell REPL for live evaluation (via tmux). [1] https://github.com/begriffs/haskell-vim-now https://github.com/begriffs/haskell-vim-now [2] https://www.youtube.com/watch?v=7sr8cAIwdBs https://www.youtube.com/watch?v=7sr8cAIwdBs EDIT: Add video