Resolving dependencies... cabal: Could not resolve dependencies: next goal: webdriver (user goal) rejecting: webdriver-0.6.1, 0.6.0.4, 0.6.0.3, 0.6.0.2, 0.6.0.1, 0.6, 0.5.5, 0.5.4, 0.5.3.3, 0.5.3.2, 0.5.3.1, 0.5.3, 0.5.2, 0.5.1 (global constraint requires ==0.5.0.1) trying: webdriver-0.5.0.1 trying: base-4.7.0.1/installed-e4b... (dependency of webdriver-0.5.0.1) next goal: lifted-base (dependency of webdriver-0.5.0.1) rejecting: lifted-base-0.2.3.6, 0.2.3.5, 0.2.3.4, 0.2.3.3, 0.2.3.2, 0.2.3.1, 0.2.3.0, 0.2.2.2, 0.2.2.1, 0.2.2.0, 0.2.1.2, 0.2.1.1, 0.2.1.0, 0.2.0.5, 0.2.0.4, 0.2.0.3, 0.2.0.2, 0.2.0.1, 0.2 (conflict: webdriver => lifted-base==0.1.*) rejecting: lifted-base-0.1.2, 0.1.1.1 (conflict: base==4.7.0.1/installed-e4b..., lifted-base => base>=3 && <4.7) rejecting: lifted-base-0.1.1, 0.1.0.4, 0.1.0.3, 0.1.0.2 (conflict: base==4.7.0.1/installed-e4b..., lifted-base => base>=3 && <4.6) rejecting: lifted-base-0.1.0.1, 0.1 (conflict: base==4.7.0.1/installed-e4b..., lifted-base => base>=3 && <4.5) Dependency tree exhaustively searched.