Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: happstack-plugins (user goal)
rejecting: happstack-plugins-7.0.2, 7.0.1, 7.0.0, 6.3.2, 6.3.1, 6.2.1, 6.1.1,
6.1.0 (global constraint requires ==6.0.3)
trying: happstack-plugins-6.0.3
next goal: mtl (dependency of happstack-plugins-6.0.3)
rejecting: mtl-2.2.1, 2.2.0.1, 2.2 (conflict: ghc =>
transformers==0.3.0.0/installed-16a..., mtl => transformers==0.4.*)
trying: mtl-2.1.3.1
next goal: happstack-server (dependency of happstack-plugins-6.0.3)
rejecting: happstack-server-7.4.4, 7.4.3, 7.4.2, 7.4.1, 7.4.0, 7.3.9, 7.3.8,
7.3.7, 7.3.6, 7.3.5, 7.3.4, 7.3.3, 7.3.2, 7.3.1, 7.3.0, 7.1.7.1, 7.1.7, 7.1.6,
7.1.5, 7.1.4, 7.1.3, 7.1.2, 7.1.1, 7.1.0, 7.0.7, 7.0.6, 7.0.5, 7.0.4, 7.0.3,
7.0.2, 7.0.1, 7.0.0, 6.6.5, 6.6.4, 6.6.3, 6.6.2, 6.5.7, 6.5.6, 6.5.4, 6.5.3,
6.5.2, 6.5.1, 6.4.6, 6.4.5, 6.4.4, 6.4.3, 6.4.2, 6.4.1, 6.3.1 (conflict:
happstack-plugins => happstack-server>=6.0 && <6.3)
rejecting: happstack-server-6.2.5, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.1.6, 6.1.5,
6.1.4, 6.1.3, 6.1.2, 6.1.0, 6.0.3, 6.0.2, 6.0.1, 6.0.0 (conflict:
mtl==2.1.3.1, happstack-server => mtl>=1.1 && <2.1)
rejecting: happstack-server-0.5.0.4, 0.5.0.3, 0.5.0.2, 0.5.0, 0.4.1, 0.3.3,
0.3.2, 0.3.1, 0.2.1, 0.1 (conflict: happstack-plugins => happstack-server>=6.0
&& <6.3)
Dependency tree exhaustively searched.