Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: xmonad (user goal)
rejecting: xmonad-0.11.1, 0.11, 0.10, 0.9.2, 0.9.1, 0.9, 0.8.1, 0.8, 0.7, 0.6,
0.5 (global constraint requires ==0.4.1)
trying: xmonad-0.4.1
trying: base-4.7.0.1/installed-e4b... (dependency of xmonad-0.4.1)
next goal: X11 (dependency of xmonad-0.4.1)
rejecting: X11-1.6.1.2, 1.6.1.1, 1.6.1, 1.6.0.2, 1.6.0.1, 1.6.0, 1.5.0.1,
1.5.0.0, 1.4.6.1, 1.4.6, 1.4.5, 1.4.4, 1.4.3, 1.4.2, 1.4.1, 1.4.0 (conflict:
xmonad => X11==1.3.0)
rejecting: X11-1.3.0 (conflict: base==4.7.0.1/installed-e4b..., X11 => base<4)
rejecting: X11-1.2.3.1, 1.2.3, 1.2.2, 1.2 (conflict: xmonad => X11==1.3.0)
Dependency tree exhaustively searched.