Resolving dependencies... cabal: Could not resolve dependencies: next goal: MagicHaskeller (user goal) rejecting: MagicHaskeller-0.9.6.4.7, 0.9.6.4.6, 0.9.6.4.5, 0.9.6.4.4, 0.9.6.4.3, 0.9.6.4.2, 0.9.6.4.1, 0.9.1, 0.8.6.3, 0.8.6.2, 0.8.6.1, 0.8.6 (global constraint requires ==0.8.5) trying: MagicHaskeller-0.8.5 next goal: base (dependency of MagicHaskeller-0.8.5) rejecting: base-4.8.1.0/installed-4f7... (conflict: MagicHaskeller => base>=3 && <4) rejecting: base-4.8.1.0, 4.8.0.0, 4.7.0.2, 4.7.0.1, 4.7.0.0, 4.6.0.1, 4.6.0.0, 4.5.1.0, 4.5.0.0, 4.4.1.0, 4.4.0.0, 4.3.1.0, 4.3.0.0, 4.2.0.2, 4.2.0.1, 4.2.0.0, 4.1.0.0, 4.0.0.0, 3.0.3.2, 3.0.3.1 (global constraint requires installed instance) Dependency tree exhaustively searched.