gistfile1.txt

1. Install: http://xquartz.macosforge.org/downloads/SL/XQuartz-2.7.8.dmg
2. Then launch XQuartz and open the preferences. On the output tab, click "Full-screen mode"
3. Follow instructions below to install and setup xmonad

$ brew install Caskroom/cask/haskell-platform
$ vim ~/.bash_profile
   export PATH="$HOME/Library/Haskell/bin:$PATH"
$ PKG_CONFIG_PATH=/opt/X11/lib/pkgconfig:$PKG_CONFIG_PATH \
  LIBRARY_PATH=/opt/X11/lib:$LIBRARY_PATH \
  CPPFLAGS="-I/opt/X11/include" \
  LDFLAGS="-L/opt/X11/lib" \
  cabal install xmonad xmonad-contrib
$ mkdir -p ~/.xinitrc.d ~/.xmonad
$ vim ~/.xinitrc.d/90-xmonad.sh
   #!/bin/sh
   USERWM=$HOME/Library/Haskell/bin/xmonad
$ chmod +x ~/.xinitrc.d/90-xmonad.sh
$ vim ~/.xmonad/xmonad.hs
   -- sample config
   -- Some examples: https://wiki.haskell.org/Xmonad/Config_archive
   import XMonad
   
   main = do
     xmonad $ defaultConfig
            { 
               modMask = mod4Mask     -- Rebind Mod to the Cmd key
            }
$ xmonad --recompile

After that, run XQuartz and launch a new xterm. 
You will likely have to toggle full screen mode (Cntrl-Cmd-A or via the app menu) 
to get anything to appear.

Maybe Interesting to look into:
http://brianmckenna.org/blog/osxmonad_library