Resolving dependencies... cabal: Could not resolve dependencies: next goal: happstack-server (user goal) rejecting: happstack-server-7.4.4, 7.4.3, 7.4.2, 7.4.1, 7.4.0, 7.3.9, 7.3.8, 7.3.7, 7.3.6, 7.3.5, 7.3.4, 7.3.3, 7.3.2, 7.3.1, 7.3.0, 7.1.7.1, 7.1.7, 7.1.6, 7.1.5, 7.1.4, 7.1.3, 7.1.2, 7.1.1, 7.1.0, 7.0.7, 7.0.6, 7.0.5, 7.0.4, 7.0.3, 7.0.2, 7.0.1, 7.0.0, 6.6.5, 6.6.4, 6.6.3, 6.6.2, 6.5.7, 6.5.6, 6.5.4, 6.5.3, 6.5.2, 6.5.1, 6.4.6, 6.4.5, 6.4.4, 6.4.3, 6.4.2, 6.4.1, 6.3.1, 6.2.5, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.1.6, 6.1.5, 6.1.4, 6.1.3, 6.1.2, 6.1.0, 6.0.3, 6.0.2, 6.0.1, 6.0.0, 0.5.0.4, 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 (global constraint requires ==0.1) trying: happstack-server-0.1 trying: template-haskell-2.10.0.0/installed-90e... (dependency of happstack-server-0.1) trying: happstack-ixset-6.0.1 (dependency of happstack-server-0.1) trying: happstack-state-6.1.4 (dependency of happstack-server-0.1) next goal: happstack-data (dependency of happstack-server-0.1) 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 (conflict: happstack-state => happstack-data>=6.0.1 && <6.1) rejecting: happstack-data-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-ixset => happstack-data>=6.0 && <6.1) Dependency tree exhaustively searched.