Resolving dependencies... cabal: Could not resolve dependencies: next goal: hails (user goal) rejecting: hails-0.11.2.1, hails-0.11.2.0, hails-0.11.1.3, hails-0.11.1.2, hails-0.11.1.1, hails-0.11.1.0, hails-0.11.0.0, hails-0.9.2.2, hails-0.9.2.1, hails-0.9.2.0, hails-0.9.0.1, hails-0.1.1 (constraint from user target requires ==0.1) trying: hails-0.1 trying: SHA-1.6.4.2 (dependency of hails-0.1) next goal: binary (dependency of hails-0.1) rejecting: binary-0.8.3.0/installed-0.8..., binary-0.8.4.1, binary-0.8.4.0, binary-0.8.3.0, binary-0.8.2.1, binary-0.8.2.0, binary-0.8.1.0, binary-0.8.0.1, binary-0.8.0.0, binary-0.7.6.1, binary-0.7.6.0, binary-0.7.5.0, binary-0.7.4.0, binary-0.7.3.0, binary-0.7.2.3, binary-0.7.2.2, binary-0.7.2.1, binary-0.7.2.0, binary-0.7.1.0, binary-0.7.0.1, binary-0.7.0.0, binary-0.6.4.0, binary-0.6.3.0, binary-0.6.2.0, binary-0.6.1.0, binary-0.6.0.0 (conflict: hails => binary>=0.5 && <0.6) rejecting: binary-0.5.1.1, binary-0.5.1.0, binary-0.5.0.2, binary-0.5.0.1, binary-0.5 (conflict: SHA => binary>=0.7 && <10000) rejecting: binary-0.4.5, binary-0.4.4, binary-0.4.3.1, binary-0.4.3, binary-0.4.2, binary-0.4.1, binary-0.4, binary-0.3, binary-0.2 (conflict: hails => binary>=0.5 && <0.6) Dependency tree exhaustively searched.