Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: happstack-hamlet (user goal)
rejecting: happstack-hamlet-7.0.4, happstack-hamlet-7.0.3,
happstack-hamlet-7.0.2, happstack-hamlet-7.0.1, happstack-hamlet-7.0.0,
happstack-hamlet-6.2.4 (constraint from user target requires ==6.2.3)
trying: happstack-hamlet-6.2.3
trying: bytestring-0.10.8.1/installed-0.1... (dependency of text-1.2.2.1)
next goal: hamlet (dependency of happstack-hamlet-6.2.3)
rejecting: hamlet-1.2.0, hamlet-1.1.9.2, hamlet-1.1.9.1, hamlet-1.1.9,
hamlet-1.1.8.1, hamlet-1.1.8, hamlet-1.1.7.7, hamlet-1.1.7.6, hamlet-1.1.7.5,
hamlet-1.1.7.4, hamlet-1.1.7.3, hamlet-1.1.7.2, hamlet-1.1.7.1, hamlet-1.1.7,
hamlet-1.1.6.4, hamlet-1.1.6.3, hamlet-1.1.6.2, hamlet-1.1.6.1, hamlet-1.1.6,
hamlet-1.1.5, hamlet-1.1.4, hamlet-1.1.3.1, hamlet-1.1.3, hamlet-1.1.2,
hamlet-1.1.1.1, hamlet-1.1.1, hamlet-1.1.0.3, hamlet-1.1.0.2, hamlet-1.1.0.1,
hamlet-1.1.0, hamlet-1.0.1.4, hamlet-1.0.1.3, hamlet-1.0.1.2, hamlet-1.0.1.1,
hamlet-1.0.1, hamlet-1.0.0 (conflict: happstack-hamlet => hamlet>=0.10 &&
<0.11)
rejecting: hamlet-0.10.9.1, hamlet-0.10.8, hamlet-0.10.7.1, hamlet-0.10.7,
hamlet-0.10.6, hamlet-0.10.5, hamlet-0.10.4, hamlet-0.10.3, hamlet-0.10.2,
hamlet-0.10.1, hamlet-0.10.0 (conflict: bytestring==0.10.8.1/installed-0.1...,
hamlet => bytestring>=0.9 && <0.10)
rejecting: hamlet-0.9.0, hamlet-0.8.2.1, hamlet-0.8.2, hamlet-0.8.1,
hamlet-0.8.0, hamlet-0.7.3, hamlet-0.7.2.1, hamlet-0.7.2, hamlet-0.7.1,
hamlet-0.7.0.2, hamlet-0.7.0.1, hamlet-0.7.0, hamlet-0.6.1.2, hamlet-0.6.1.1,
hamlet-0.6.1, hamlet-0.6.0.3, hamlet-0.6.0.2, hamlet-0.6.0.1, hamlet-0.6.0,
hamlet-0.5.1.2, hamlet-0.5.1.1, hamlet-0.5.1, hamlet-0.5.0.2, hamlet-0.5.0.1,
hamlet-0.5.0, hamlet-0.4.2, hamlet-0.4.1, hamlet-0.4.0, hamlet-0.3.1.1,
hamlet-0.3.1, hamlet-0.3.0, hamlet-0.2.3.1, hamlet-0.2.3, hamlet-0.2.2,
hamlet-0.2.1, hamlet-0.2.0, hamlet-0.0.2, hamlet-0.0.1, hamlet-0.0.0
(conflict: happstack-hamlet => hamlet>=0.10 && <0.11)
Dependency tree exhaustively searched.