Resolving dependencies... cabal: Could not resolve dependencies: next goal: Allure (user goal) rejecting: Allure-0.5.0.0, 0.4.101.1, 0.4.100.0, 0.4.99.0, 0.4.14, 0.4.12 (global constraint requires ==0.4.10.5) trying: Allure-0.4.10.5 trying: base-4.8.1.0/installed-4f7... (dependency of Allure-0.4.10.5) next goal: LambdaHack (dependency of Allure-0.4.10.5) rejecting: LambdaHack-0.5.0.0, 0.4.101.1, 0.4.101.0, 0.4.100.0, 0.4.99.0, 0.4.9.0, 0.2.14, 0.2.12 (conflict: Allure => LambdaHack>=0.2.10.5 && <0.2.11) trying: LambdaHack-0.2.10.6 next goal: pretty-show (dependency of LambdaHack-0.2.10.6) rejecting: pretty-show-1.6.9, 1.6.8.2, 1.6.8.1, 1.6.8, 1.6.7, 1.6.6, 1.6.5, 1.6.3, 1.6.2 (conflict: LambdaHack => pretty-show>=1.6 && <1.6.2) rejecting: pretty-show-1.6.1, 1.6 (conflict: base==4.8.1.0/installed-4f7..., pretty-show => base>=4.4 && <4.7) rejecting: pretty-show-1.5, 1.4.1, 1.3.2, 1.3.1, 1.3, 1.2, 1.1.1, 1.1, 1 (conflict: LambdaHack => pretty-show>=1.6 && <1.6.2) Dependency tree exhaustively searched.