Resolving dependencies... cabal: Could not resolve dependencies: next goal: yackage (user goal) rejecting: yackage-0.8.0, 0.7.0.8, 0.7.0.7, 0.7.0.6, 0.7.0.5, 0.7.0.4, 0.7.0.3, 0.7.0.2, 0.7.0.1, 0.7.0, 0.6.0.5, 0.6.0.4, 0.6.0.3, 0.6.0.2, 0.6.0.1, 0.6.0, 0.5.0.1, 0.5.0, 0.4.0, 0.3.0, 0.2.1, 0.2.0, 0.1.0.1 (global constraint requires ==0.1.0) trying: yackage-0.1.0 trying: base-4.8.1.0/installed-4f7... (dependency of yackage-0.1.0) next goal: http-enumerator (dependency of yackage-0.1.0) rejecting: http-enumerator-0.7.3.3, 0.7.3.2, 0.7.3.1, 0.7.3, 0.7.2.5, 0.7.2.4, 0.7.2.3, 0.7.2.2, 0.7.2.1, 0.7.2, 0.7.1.8, 0.7.1.7, 0.7.1.6, 0.7.1.5, 0.7.1.4, 0.7.1.3, 0.7.1.2, 0.7.1.1, 0.7.1, 0.7.0, 0.6.7, 0.6.6, 0.6.5.6, 0.6.5.5, 0.6.5.4, 0.6.5.3, 0.6.5.2, 0.6.5.1, 0.6.5, 0.6.4.3, 0.6.4.2, 0.6.4.1, 0.6.4, 0.6.3, 0.6.2.1, 0.6.2, 0.6.0.2, 0.6.0.1, 0.6.0 (conflict: yackage => http-enumerator>=0.5.1 && <0.6) trying: http-enumerator-0.5.1 next goal: case-insensitive (dependency of http-enumerator-0.5.1) rejecting: case-insensitive-1.2.0.5, 1.2.0.4, 1.2.0.3, 1.2.0.2, 1.2.0.1, 1.2.0.0, 1.1.0.3, 1.1.0.2, 1.1.0.1, 1.1, 1.0.0.2, 1.0.0.1, 1.0, 0.4.0.4, 0.4.0.3, 0.4.0.2, 0.4.0.1, 0.4, 0.3.0.1, 0.3 (conflict: http-enumerator => case-insensitive>=0.2 && <0.3) rejecting: case-insensitive-0.2.0.2 (conflict: base==4.8.1.0/installed-4f7..., case-insensitive => base>=3 && <4.4) rejecting: case-insensitive-0.2.0.1, 0.2 (conflict: base==4.8.1.0/installed-4f7..., case-insensitive => base>=4 && <4.4) rejecting: case-insensitive-0.1 (conflict: http-enumerator => case-insensitive>=0.2 && <0.3) Dependency tree exhaustively searched.