Resolving dependencies... cabal: Could not resolve dependencies: next goal: hack2-handler-mongrel2-http (user goal) rejecting: hack2-handler-mongrel2-http-2011.10.31, 2011.6.25, 2011.6.24 (global constraint requires ==2011.6.22) trying: hack2-handler-mongrel2-http-2011.6.22 trying: base-4.8.1.0/installed-4f7... (dependency of hack2-handler-mongrel2-http-2011.6.22) next goal: case-insensitive (dependency of hack2-handler-mongrel2-http-2011.6.22) rejecting: case-insensitive-1.2.0.5, 1.2.0.4, 1.2.0.3, 1.2.0.2, 1.2.0.1, 1.2.0.0, 1.1.0.3, 1.1.0.2, 1.1.0.1, 1.1, 1.0.0.2, 1.0.0.1, 1.0, 0.4.0.4, 0.4.0.3, 0.4.0.2, 0.4.0.1, 0.4, 0.3.0.1, 0.3 (conflict: hack2-handler-mongrel2-http => case-insensitive<0.3) rejecting: case-insensitive-0.2.0.2 (conflict: base==4.8.1.0/installed-4f7..., case-insensitive => base>=3 && <4.4) rejecting: case-insensitive-0.2.0.1, 0.2, 0.1 (conflict: base==4.8.1.0/installed-4f7..., case-insensitive => base>=4 && <4.4) Dependency tree exhaustively searched.