Resolving dependencies... cabal: Could not resolve dependencies: next goal: cake (user goal) rejecting: cake-1.1.0.1, cake-1.0.0, cake-0.4.2.0 (constraint from user target requires ==0.4.0.0) trying: cake-0.4.0.0 trying: base-4.9.0.0/installed-4.9... (dependency of cake-0.4.0.0) next goal: array (dependency of cake-0.4.0.0) rejecting: array-0.5.1.1/installed-0.5..., array-0.5.1.1, array-0.5.1.0, array-0.5.0.0 (conflict: cake => array==0.4.*) rejecting: array-0.4.0.1 (conflict: base==4.9.0.0/installed-4.9..., array => base>=4.2 && <4.7) rejecting: array-0.4.0.0 (conflict: base==4.9.0.0/installed-4.9..., array => base>=4.2 && <4.6) rejecting: array-0.3.0.3, array-0.3.0.2, array-0.3.0.1, array-0.3.0.0, array-0.2.0.0, array-0.1.0.0 (conflict: cake => array==0.4.*) Dependency tree exhaustively searched.