Resolving dependencies... cabal: Could not resolve dependencies: next goal: ecu (user goal) rejecting: ecu-0.0.8, 0.0.7, 0.0.6, 0.0.5, 0.0.4, 0.0.3, 0.0.2 (global constraint requires ==0.0.1) trying: ecu-0.0.1 trying: base-4.8.1.0/installed-4f7... (dependency of ecu-0.0.1) next goal: directory (dependency of ecu-0.0.1) rejecting: directory-1.2.2.0/installed-258..., 1.2.4.0, 1.2.3.1, 1.2.3.0, 1.2.2.1, 1.2.2.0, 1.2.1.0, 1.2.0.1, 1.2.0.0, 1.1.0.2, 1.1.0.1, 1.1.0.0 (conflict: ecu => directory>=1.0.1 && <1.1) rejecting: directory-1.0.1.2 (conflict: base==4.8.1.0/installed-4f7..., directory => base>=4.2 && <4.4) rejecting: directory-1.0.1.1, 1.0.1.0 (conflict: base==4.8.1.0/installed-4f7..., directory => base>=4.1 && <4.3) rejecting: directory-1.0.0.3, 1.0.0.0 (conflict: ecu => directory>=1.0.1 && <1.1) Dependency tree exhaustively searched.