Resolving dependencies... cabal: Could not resolve dependencies: next goal: prelude-generalize (user goal) rejecting: prelude-generalize-0.4, 0.3.1, 0.3, 0.2, 0.1.1 (global constraint requires ==0.1) trying: prelude-generalize-0.1 next goal: logict (dependency of prelude-generalize-0.1) rejecting: logict-0.6.0.2, 0.6.0.1, 0.6 (conflict: prelude-generalize => logict>=0.5 && <0.6) trying: logict-0.5.0.2 trying: mtl-2.2.1 (dependency of logict-0.5.0.2) next goal: comonad (dependency of prelude-generalize-0.1) rejecting: comonad-4.2.6, 4.2.5, 4.2.4, 4.2.3, 4.2.2, 4.2.1, 4.2, 4.0.1, 4.0, 3.1, 3.0.3, 3.0.2, 3.0.1.1, 3.0.0.2, 3.0.0.1, 3.0 (conflict: prelude-generalize => comonad>=1.1.0 && <1.2) rejecting: comonad-1.1.1.6, 1.1.1.5, 1.1.1.4 (conflict: base==4.7.0.1/installed-e4b..., comonad => base>=4 && <4.7) trying: comonad-1.1.1.3 next goal: transformers (dependency of prelude-generalize-0.1) rejecting: transformers-0.3.0.0/installed-16a... (conflict: mtl => transformers==0.4.*) rejecting: transformers-0.4.3.0, 0.4.2.0, 0.4.1.0 (conflict: comonad => transformers>=0.2 && <0.4) rejecting: transformers-0.3.0.0, 0.2.2.1, 0.2.2.0 (conflict: mtl => transformers==0.4.*) rejecting: transformers-0.2.1.0, 0.2.0.0, 0.1.4.0, 0.1.3.0, 0.1.1.0, 0.1.0.1, 0.1.0.0, 0.0.1.0, 0.0.0.0 (conflict: prelude-generalize => transformers>=0.2.2 && <4) rejecting: transformers-0.4.0.0 (conflict: comonad => transformers>=0.2 && <0.4) Dependency tree exhaustively searched.