Resolving dependencies... cabal: Could not resolve dependencies: next goal: HaVSA (user goal) rejecting: HaVSA-0.1.0.2, 0.1.0.1 (global constraint requires ==0.1) trying: HaVSA-0.1 trying: base-4.8.1.0/installed-4f7... (dependency of HaVSA-0.1) next goal: HUnit (dependency of HaVSA-0.1) rejecting: HUnit-1.3.0.0, 1.2.5.2, 1.2.5.1, 1.2.5.0, 1.2.4.3, 1.2.4.2 (conflict: HaVSA => HUnit>=1.2.2 && <1.2.3) rejecting: HUnit-1.2.2.3, 1.2.2.1, 1.2.2.0 (conflict: base==4.8.1.0/installed-4f7..., HUnit => base<4.7) rejecting: HUnit-1.2.0.3, 1.2.0.2, 1.2.0.1, 1.2.0.0, 1.1 (conflict: HaVSA => HUnit>=1.2.2 && <1.2.3) Dependency tree exhaustively searched.