Resolving dependencies... cabal: Could not resolve dependencies: trying: haskelisp-0.1.0.1 (user goal) trying: base-4.9.0.0/installed-4.9... (dependency of haskelisp-0.1.0.1) next goal: logging-effect (dependency of haskelisp-0.1.0.1) rejecting: logging-effect-1.1.0 (conflict: haskelisp => logging-effect<1.1) rejecting: logging-effect-1.0.1, logging-effect-1.0.0 (conflict: base==4.9.0.0/installed-4.9..., logging-effect => base>=4.8 && <4.9) Dependency tree exhaustively searched.