Resolving dependencies... cabal: Could not resolve dependencies: next goal: adjunctions (user goal) rejecting: adjunctions-4.3, adjunctions-4.2.2, adjunctions-4.2.1, adjunctions-4.2, adjunctions-4.1.0.1, adjunctions-4.0.3, adjunctions-4.0.2, adjunctions-4.0.1, adjunctions-4.0, adjunctions-3.2.1.1, adjunctions-3.2.1, adjunctions-3.2, adjunctions-3.1, adjunctions-3.0.1, adjunctions-3.0.0.1, adjunctions-3.0, adjunctions-2.5, adjunctions-2.4.0.2, adjunctions-2.4.0.1, adjunctions-2.4, adjunctions-2.2.1.1, adjunctions-2.2.1, adjunctions-2.2, adjunctions-2.0.5, adjunctions-2.0.4, adjunctions-2.0.3, adjunctions-2.0.2, adjunctions-2.0.1.1, adjunctions-2.0.1, adjunctions-2.0.0.3, adjunctions-2.0.0.2, adjunctions-2.0.0.1, adjunctions-2.0.0, adjunctions-1.8.0, adjunctions-1.0.0, adjunctions-0.9.3, adjunctions-0.9.2, adjunctions-0.9.1, adjunctions-0.9.0.4, adjunctions-0.9.0.2, adjunctions-0.9.0.1 (constraint from user target requires ==0.9.0) trying: adjunctions-0.9.0 next goal: base (dependency of adjunctions-0.9.0) rejecting: base-4.9.0.0/installed-4.9... (conflict: adjunctions => base>=4 && <4.4) 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.