Happy Haskell Programming

Please read: http://www.mew.org/~kazu/proj/ghc-mod/

Using the stable version

Emacs front-end, which is consistent with binaries on Hackage, is available stable MELPA whose URL is http://melpa-stable.milkbox.net/packages/. So, your "~/.emacs" should be:

(require 'package)
(add-to-list 'package-archives 
	     '("melpa" . "http://melpa-stable.milkbox.net/packages/"))
(package-initialize)

With this configuration you can install the stable Emacs front end indicated by "ghc" from MELPA while you can install ghc-mod/ghc-modi binaries by:

% cabal update
% cabal install ghc-mod

Using the develop version

You should install both Emacs front-end and binaries from this git repo. If you use the snapshot MELPA to install Emacs front-end, you would suffer from inconsistency between Emacs front-end and binaries.