For Haskell, there's a plugin called ghc-mod http://www.mew.org/~kazu/proj/ghc-mod/en/ http://www.mew.org/~kazu/proj/ghc-mod/en/ It works with many text edito

For Haskell, there's a plugin called ghc-mod http://www.mew.org/~kazu/proj/ghc-mod/en/ http://www.mew.org/~kazu/proj/ghc-mod/en/ It works with many text editors, like Emacs or vim. edit: the trend today is to work with the "language server protocol": http://langserver.org/ http://langserver.org/ Haskell people are writing new tooling based on LSP to supersede ghc-mod: https://github.com/alanz/haskell-lsp https://github.com/alanz/haskell-lsp