Resolving dependencies... cabal: Could not resolve dependencies: next goal: hums (user goal) rejecting: hums-0.7.0, hums-0.6.0, hums-0.5.0, hums-0.4.3, hums-0.4.2, hums-0.4.1, hums-0.4.0 (constraint from user target requires ==0.3.3) trying: hums-0.3.3 trying: base-4.9.0.0/installed-4.9... (dependency of hums-0.3.3) next goal: case-insensitive (dependency of hums-0.3.3) rejecting: case-insensitive-1.2.0.7, case-insensitive-1.2.0.6, case-insensitive-1.2.0.5, case-insensitive-1.2.0.4, case-insensitive-1.2.0.3, case-insensitive-1.2.0.2, case-insensitive-1.2.0.1, case-insensitive-1.2.0.0, case-insensitive-1.1.0.3, case-insensitive-1.1.0.2, case-insensitive-1.1.0.1, case-insensitive-1.1, case-insensitive-1.0.0.2, case-insensitive-1.0.0.1, case-insensitive-1.0, case-insensitive-0.4.0.4, case-insensitive-0.4.0.3, case-insensitive-0.4.0.2, case-insensitive-0.4.0.1, case-insensitive-0.4, case-insensitive-0.3.0.1, case-insensitive-0.3 (conflict: hums => case-insensitive>=0.2 && <0.3) rejecting: case-insensitive-0.2.0.2 (conflict: base==4.9.0.0/installed-4.9..., case-insensitive => base>=3 && <4.4) rejecting: case-insensitive-0.2.0.1, case-insensitive-0.2 (conflict: base==4.9.0.0/installed-4.9..., case-insensitive => base>=4 && <4.4) rejecting: case-insensitive-0.1 (conflict: hums => case-insensitive>=0.2 && <0.3) Dependency tree exhaustively searched.