Resolving dependencies... cabal: Could not resolve dependencies: trying: QuickCheck-2.9.2 (dependency of Crypto-4.2.5.1) next goal: happstack-data (dependency of happstack-helpers-0.22.1) rejecting: happstack-data-6.0.1, happstack-data-6.0.0, happstack-data-0.5.0.3, happstack-data-0.5.0.2, happstack-data-0.5.0, happstack-data-0.4.1, happstack-data-0.3.3, happstack-data-0.3.2, happstack-data-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, happstack-util-6.0.2, happstack-util-6.0.0, happstack-util-0.5.0.3, happstack-util-0.5.0.2, happstack-util-0.5.0.1, happstack-util-0.5.0, happstack-util-0.4.1, happstack-util-0.3.2, happstack-util-0.3.1 (conflict: happstack-data => happstack-util>=0.2.1 && <0.3) rejecting: happstack-util-0.2.1 (conflict: QuickCheck==2.9.2, happstack-util => QuickCheck<2) rejecting: happstack-util-0.1 (conflict: happstack-data => happstack-util>=0.2.1 && <0.3) Dependency tree exhaustively searched.