Resolving dependencies... cabal: Could not resolve dependencies: trying: primula-board-0.0.1 (user goal) trying: happstack-state-6.1.4 (dependency of primula-board-0.0.1) trying: template-haskell-2.10.0.0/installed-90e... (dependency of happstack-state-6.1.4) next goal: happstack-data (dependency of happstack-state-6.1.4) rejecting: happstack-data-6.0.1 (conflict: template-haskell==2.10.0.0/installed-90e..., happstack-data => template-haskell<2.7) rejecting: happstack-data-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, 0.2.1, 0.1 (conflict: happstack-state => happstack-data>=6.0.1 && <6.1) Dependency tree exhaustively searched.