My xmonad configuration

xmonad.hs

import XMonad
import XMonad.Hooks.SetWMName
import XMonad.Actions.SpawnOn

{- workspace 1: a terminal
   workspace 2: emacs
   workspace 3: web browser -}
main :: IO ()
main = xmonad defaultConfig
        { modMask = mod4Mask
        , terminal = "gnome-terminal"
        , logHook = setWMName "LG3D"
        , manageHook = manageSpawn <+> manageHook defaultConfig
        , startupHook = do
             spawn "xrandr --output VGA1 --mode 1280x1024 --left-of DP1"
             spawn "xset r rate 200 30"
             spawn "setxkbmap gb"
             spawn "xloadimage -onroot -fullscreen ~/Pictures/wallpaper/cats.jpg"
             spawnOn "1" "gnome-terminal"
             spawnOn "2" "emacs"
             spawnOn "3" "google-chrome"
        }