Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: happstack-helpers (user goal)
rejecting: happstack-helpers-0.56, 0.54, 0.53, 0.52, 0.51, 0.50, 0.49, 0.48,
0.47, 0.46, 0.45, 0.44, 0.43, 0.42, 0.30 (global constraint requires ==0.22.1)
trying: happstack-helpers-0.22.1
trying: PBKDF2-0.3.1.5 (dependency of happstack-helpers-0.22.1)
trying: Crypto-4.2.5.1 (dependency of PBKDF2-0.3.1.5)
trying: QuickCheck-2.8.1 (dependency of Crypto-4.2.5.1)
next goal: happstack-data (dependency of happstack-helpers-0.22.1)
rejecting: happstack-data-6.0.1, 6.0.0, 0.5.0.3, 0.5.0.2, 0.5.0, 0.4.1, 0.3.3,
0.3.2, 0.3.1 (conflict: happstack-helpers => happstack-data>=0.2 && <0.3)
trying: happstack-data-0.2.1
next goal: happstack-util (dependency of happstack-data-0.2.1)
rejecting: happstack-util-6.0.3, 6.0.2, 6.0.0, 0.5.0.3, 0.5.0.2, 0.5.0.1,
0.5.0, 0.4.1, 0.3.2, 0.3.1 (conflict: happstack-data => happstack-util>=0.2.1
&& <0.3)
rejecting: happstack-util-0.2.1 (conflict: QuickCheck==2.8.1, happstack-util
=> QuickCheck<2)
rejecting: happstack-util-0.1 (conflict: happstack-data =>
happstack-util>=0.2.1 && <0.3)
Dependency tree exhaustively searched.