Resolving dependencies... cabal: Could not resolve dependencies: next goal: http-proxy (user goal) rejecting: http-proxy-0.1.0.5, http-proxy-0.1.0.4, http-proxy-0.1.0.3, http-proxy-0.1.0.2, http-proxy-0.1.0.1, http-proxy-0.0.12, http-proxy-0.0.11, http-proxy-0.0.10, http-proxy-0.0.9 (constraint from user target requires ==0.0.8) trying: http-proxy-0.0.8 trying: base-4.9.0.0/installed-4.9... (dependency of http-proxy-0.0.8) next goal: lifted-base (dependency of http-proxy-0.0.8) rejecting: lifted-base-0.2.3.8, lifted-base-0.2.3.7, lifted-base-0.2.3.6, lifted-base-0.2.3.5, lifted-base-0.2.3.4, lifted-base-0.2.3.3, lifted-base-0.2.3.2, lifted-base-0.2.3.1, lifted-base-0.2.3.0, lifted-base-0.2.2.2, lifted-base-0.2.2.1, lifted-base-0.2.2.0, lifted-base-0.2.1.2, lifted-base-0.2.1.1, lifted-base-0.2.1.0, lifted-base-0.2.0.5, lifted-base-0.2.0.4, lifted-base-0.2.0.3, lifted-base-0.2.0.2, lifted-base-0.2.0.1, lifted-base-0.2 (conflict: http-proxy => lifted-base>=0.1 && <0.2) rejecting: lifted-base-0.1.2, lifted-base-0.1.1.1 (conflict: base==4.9.0.0/installed-4.9..., lifted-base => base>=3 && <4.7) rejecting: lifted-base-0.1.1, lifted-base-0.1.0.4, lifted-base-0.1.0.3, lifted-base-0.1.0.2 (conflict: base==4.9.0.0/installed-4.9..., lifted-base => base>=3 && <4.6) rejecting: lifted-base-0.1.0.1, lifted-base-0.1 (conflict: base==4.9.0.0/installed-4.9..., lifted-base => base>=3 && <4.5) Dependency tree exhaustively searched.