In less than ten minutes your Vim will transform into a beautiful Haskell paradise. (Don't worry, it backs up your original configuration to ~/.config/haskell-vim-now/backup/.vimrc.yearmonthdate_time.) It also builds all necessary support binaries including codex, hscope, ghc-mod, hasktags, hoogle and more. WARNING: this command, once successful, will make backups and remove your existing VIM configurations (.vim, plugins etc). You can later customize HVN configurations.