Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: xmobar (user goal)
rejecting: xmobar-0.23.1, 0.23, 0.22.1, 0.22, 0.21, 0.20.1, 0.20, 0.19, 0.18,
0.17, 0.16, 0.15, 0.14, 0.13, 0.12, 0.11.1, 0.11, 0.10, 0.9.2 (global
constraint requires ==0.9.1)
trying: xmobar-0.9.1
trying: base-4.8.1.0/installed-4f7... (dependency of xmobar-0.9.1)
rejecting: xmobar-0.9.1:+small_base (conflict: base==4.8.1.0/installed-4f7...,
xmobar-0.9.1:small_base => base<4)
rejecting: xmobar-0.9.1:-small_base (conflict: base==4.8.1.0/installed-4f7...,
xmobar-0.9.1:small_base => base<3)
Dependency tree exhaustively searched.