ghcmod.vim Happy Haskell programming on Vim, powered by ghc-mod http://www.vim.org/scripts/script.php?script_id=4473 https://github.com/eagletmt/ghcmod-vim/releases Features Displaying the type of sub-expressions (ghc-mod type) Displaying error/warning messages and their locations (ghc-mod check and ghc-mod lint) Displaying the expansion of splices (ghc-mod expand) Insert split function cases (ghc