Resolving dependencies... cabal: Could not resolve dependencies: next goal: creatur (user goal) rejecting: creatur-5.9.5, 5.9.4, 5.9.3, 5.9.2, 5.9.1, 5.9.0, 5.8.2, 5.8.0, 5.7.3, 5.7.2, 5.7.1, 5.7.0, 5.6.9, 5.6.8, 5.6.7, 5.6.6, 5.6.5, 5.6.4, 5.6.3, 5.6.2, 5.6.1, 5.6.0, 5.5.1, 5.5.0, 5.4.2, 5.4.1, 5.4.0, 5.3.2, 5.3.1, 5.3.0, 5.2.11, 5.2.10, 5.2.9, 5.2.8, 5.2.7, 5.2.6, 5.2.5, 5.2.4, 5.2.3, 5.2.1, 5.2.0, 5.0.1, 4.3.3, 4.3.2, 4.2.0, 4.1.7, 4.1.6, 4.1.4, 3.0.0, 2.0.12, 2.0.11 (global constraint requires ==2.0.10) trying: creatur-2.0.10 trying: base-4.7.0.1/installed-e4b... (dependency of creatur-2.0.10) next goal: unix (dependency of creatur-2.0.10) rejecting: unix-2.7.0.1/installed-0d8..., 2.7.1.0, 2.7.0.1, 2.7.0.0 (conflict: creatur => unix==2.6.*) rejecting: unix-2.6.0.1, 2.6.0.0 (conflict: base==4.7.0.1/installed-e4b..., unix => base>=4.5 && <4.7) rejecting: unix-2.5.1.1, 2.5.1.0, 2.5.0.0, 2.4.2.0, 2.4.1.0, 2.4.0.2, 2.4.0.1, 2.4.0.0, 2.3.2.0, 2.3.1.0, 2.3.0.0, 2.2.0.0, 2.0 (conflict: creatur => unix==2.6.*) Dependency tree exhaustively searched.