Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: happstack-contrib (user goal)
rejecting: happstack-contrib-0.2.1 (constraint from user target requires
==0.1)
trying: happstack-contrib-0.1
trying: happstack-ixset-6.0.1 (dependency of happstack-contrib-0.1)
trying: template-haskell-2.11.0.0/installed-2.1... (dependency of
happstack-ixset-6.0.1)
trying: happstack-state-6.1.4 (dependency of happstack-contrib-0.1)
next goal: happstack-data (dependency of happstack-contrib-0.1)
rejecting: happstack-data-6.0.1 (conflict:
template-haskell==2.11.0.0/installed-2.1..., happstack-data =>
template-haskell<2.7)
rejecting: happstack-data-6.0.0 (conflict: happstack-state =>
happstack-data>=6.0.1 && <6.1)
rejecting: 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, happstack-data-0.2.1,
happstack-data-0.1 (conflict: happstack-ixset => happstack-data>=6.0 && <6.1)
Dependency tree exhaustively searched.