I think what happened here is the author split X.L.Groups.Examples into Examples, Helpers, and Wmii, but failed to update xmonad-contrib.cabal. X.L.Groups was edited to refer to and link to all three modules, plus they provide useful functionality. So Helpers and Wmii should be exposed along with Examples. 1 patch for repository /home/gvg/repos/pure/XMonadContrib: Thu Nov 3 23:37:03 MDT 2011 Wirt Wolff <wirtwolff@gmail.com> * Expose X.L.Groups.Helpers and Groups.Wmii in xmonad-contrib.cabal They provide many useful exports and are linked from X.L.Groups so promote them from other-modules or missing status.