Useful helper functions for amending the defaultConfig.

(See also XMonad.Util.CustomKeys in xmonad-contrib.)

Add or override keybindings from the existing set. Example use:

 main = xmonad $ defaultConfig { terminal = "urxvt" }
                 `additionalKeys`
                 [ ((mod1Mask, xK_m        ), spawn "echo 'Hi, mom!' | dzen2 -p 4")
                 , ((mod1Mask, xK_BackSpace), withFocused hide) -- N.B. this is an absurd thing to do
                 ]

This overrides the previous definition of mod-m.

Note that, unlike in xmonad 0.4 and previous, you can't use modMask to refer to the modMask you configured earlier. You must specify mod1Mask (or whichever), or add your own myModMask = mod1Mask line.

Remove standard keybindings you're not using. Example use:

 main = xmonad $ defaultConfig { terminal = "urxvt" }
                 `removeKeys` [(mod1Mask .|. shiftMask, n) | n <- [xK_1 .. xK_9]]