Resolving dependencies... cabal: Could not resolve dependencies: next goal: second-transfer (user goal) rejecting: second-transfer-0.10.0.4, second-transfer-0.10.0.2, second-transfer-0.10.0.1, second-transfer-0.7.1.0, second-transfer-0.6.1.0, second-transfer-0.6.0.0, second-transfer-0.5.5.1, second-transfer-0.5.5.0, second-transfer-0.5.4.0, second-transfer-0.5.3.2, second-transfer-0.5.3.1, second-transfer-0.5.2.2, second-transfer-0.5.0.0, second-transfer-0.4.0.0, second-transfer-0.3.0.4, second-transfer-0.3.0.3 (constraint from user target requires ==0.3.0.2) trying: second-transfer-0.3.0.2 next goal: base (dependency of second-transfer-0.3.0.2) rejecting: base-4.9.0.0/installed-4.9... (conflict: second-transfer => base>=4.7 && <4.8) 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.