Haskell Completion on Emacs This package enables many completions for Haskell programming in Haskell. Flymake is also integrated. The "ghc-mod" program written in Haskell is a backend to gather information from GHC. Elisp libraries including ghc-mod is an extension to haskell-mode. You should put the followings in your "~/.emacs.el": (autoload 'ghc-init "ghc" nil t) (add-hook 'haskell-mode-hook (lambda () (ghc-init))) or (add-hook 'haskell-mode-hook (lambda () (ghc-init) (flymake-mode))) For more information, see: http://www.mew.org/~kazu/proj/ghc-mod/