Resolving dependencies... cabal: Could not resolve dependencies: next goal: th-orphans (user goal) rejecting: th-orphans-0.13.0, 0.12.2, 0.12.1, 0.12.0, 0.11.1, 0.11.0, 0.9.1, 0.9.0, 0.8.3, 0.8.2, 0.8.1, 0.8, 0.7.0.1, 0.7 (global constraint requires ==0.6.1) trying: th-orphans-0.6.1 next goal: base (dependency of th-orphans-0.6.1) rejecting: base-4.8.1.0/installed-4f7... (conflict: th-orphans => base>=4.4 && <4.8) 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.