Resolving dependencies... cabal: Could not resolve dependencies: trying: bogre-banana-0.0.1 (user goal) trying: base-4.7.0.1/installed-e4b... (dependency of bogre-banana-0.0.1) next goal: hois (dependency of bogre-banana-0.0.1) rejecting: hois-0.1.0.0 (conflict: base==4.7.0.1/installed-e4b..., hois => base==4.5.*) Dependency tree exhaustively searched.