Here is my first try to write a Haskell mode layout indentation plugin for gedit - GNOME Text Editor: ftp://neverb.net/soft/mine/gedit_haskell_mode/haskell_indentation-latest.tar.gz Curent version: v0.4 To install the plugin 1) Create directory ~/.gnome2/gedit/plugins 2) Copy tarball/plugin/* contents to ~/.gnome2/gedit/plugins/ 3) In gedit go to Edit -> Preferences -> Plugins 4) Check the box left from "Haskell Indentation" plugin 5) (Possibly needed) Restart gedit.