Resolving dependencies... cabal: Could not resolve dependencies: next goal: time (user goal) rejecting: time-1.7, time-1.6.0.1, time-1.6, time-1.5.0.1, time-1.5, time-1.4.2, time-1.4.1, time-1.4.0.2, time-1.4.0.1, time-1.4, time-1.3, time-1.2.0.5, time-1.2.0.4, time-1.2.0.3, time-1.2.0.2, time-1.2.0.1 (constraint from user target requires ==1.2) trying: time-1.2 next goal: base (dependency of time-1.2) rejecting: base-4.9.0.0/installed-4.9... (conflict: time => base<0) rejecting: base-4.9.0.0, base-4.8.2.0, base-4.8.1.0, base-4.8.0.0, base-4.7.0.2, base-4.7.0.1, base-4.7.0.0, base-4.6.0.1, base-4.6.0.0, base-4.5.1.0, base-4.5.0.0, base-4.4.1.0, base-4.4.0.0, base-4.3.1.0, base-4.3.0.0, base-4.2.0.2, base-4.2.0.1, base-4.2.0.0, base-4.1.0.0, base-4.0.0.0, base-3.0.3.2, base-3.0.3.1 (constraint from non-upgradeable package requires installed instance) Dependency tree exhaustively searched.