Resolving dependencies... cabal: Could not resolve dependencies: next goal: cqrs-example (user goal) rejecting: cqrs-example-0.9.1, 0.9.0 (global constraint requires ==0.8.0) trying: cqrs-example-0.8.0 trying: base-4.7.0.1/installed-e4b... (dependency of cqrs-example-0.8.0) next goal: warp (dependency of cqrs-example-0.8.0) rejecting: warp-3.0.13.1, 3.0.13, 3.0.12.1, 3.0.12, 3.0.11, 3.0.10.1, 3.0.10, 3.0.9.3, 3.0.9.2, 3.0.9.1, 3.0.9, 3.0.8, 3.0.7, 3.0.6, 3.0.5.2, 3.0.5.1, 3.0.5, 3.0.4.1, 3.0.4, 3.0.3, 3.0.2.3, 3.0.2.2, 3.0.2.1, 3.0.2, 3.0.1.1, 3.0.1, 3.0.0.8, 3.0.0.7, 3.0.0.6, 3.0.0.5, 3.0.0.4, 3.0.0.3, 3.0.0.2, 3.0.0.1, 3.0.0, 2.1.5.2, 2.1.5.1, 2.1.5, 2.1.4.1, 2.1.4, 2.1.3.3, 2.1.3.2, 2.1.3.1, 2.1.3, 2.1.2.1, 2.1.2, 2.1.1.2, 2.1.1.1, 2.1.1, 2.1.0, 2.0.3.4, 2.0.3.3, 2.0.3.2, 2.0.3.1, 2.0.3, 2.0.2.1, 2.0.2, 2.0.1, 2.0.0.1, 2.0.0, 1.3.10.2, 1.3.10.1, 1.3.10, 1.3.9.2, 1.3.9.1, 1.3.9, 1.3.8.4, 1.3.8.3, 1.3.8.2, 1.3.8.1, 1.3.8, 1.3.7.5, 1.3.7.4, 1.3.7.3, 1.3.7.2, 1.3.7.1, 1.3.7, 1.3.6, 1.3.5.1, 1.3.5, 1.3.4.4, 1.3.4.3, 1.3.4.2, 1.3.4.1, 1.3.4, 1.3.3.3, 1.3.3.2, 1.3.3.1, 1.3.3, 1.3.2, 1.3.1.2, 1.3.1.1, 1.3.1, 1.3.0.1, 1.3.0, 1.2.2, 1.2.1.1, 1.2.1, 1.2.0.2, 1.2.0.1, 1.2.0, 1.1.0.1, 1.1.0 (conflict: cqrs-example => warp>=1.0.0 && <1.1) trying: warp-1.0.0.1 next goal: lifted-base (dependency of warp-1.0.0.1) rejecting: lifted-base-0.2.3.6, 0.2.3.5, 0.2.3.4, 0.2.3.3, 0.2.3.2, 0.2.3.1, 0.2.3.0, 0.2.2.2, 0.2.2.1, 0.2.2.0, 0.2.1.2, 0.2.1.1, 0.2.1.0, 0.2.0.5, 0.2.0.4, 0.2.0.3, 0.2.0.2, 0.2.0.1, 0.2 (conflict: warp => lifted-base>=0.1 && <0.2) rejecting: lifted-base-0.1.2, 0.1.1.1 (conflict: base==4.7.0.1/installed-e4b..., lifted-base => base>=3 && <4.7) rejecting: lifted-base-0.1.1, 0.1.0.4, 0.1.0.3, 0.1.0.2 (conflict: base==4.7.0.1/installed-e4b..., lifted-base => base>=3 && <4.6) rejecting: lifted-base-0.1.0.1, 0.1 (conflict: base==4.7.0.1/installed-e4b..., lifted-base => base>=3 && <4.5) Dependency tree exhaustively searched.