xmonad/osxmonad — pull request #23 by gphil (2013-02-20 17:11:59+00:00)
Title: Add installation step to install Haskell X11 package.

This package is not always present (I got hung up on this until I saw Issue #8), so I added:

cabal install "X11 >=1.5 && <1.7"

to the installation instructions to help out other new users.