Resolving dependencies... cabal: Could not resolve dependencies: next goal: ghc-pkg-autofix (user goal) rejecting: ghc-pkg-autofix-0.2.0.1, 0.2.0, 0.1.4, 0.1.3 (global constraint requires ==0.1.2) trying: ghc-pkg-autofix-0.1.2 next goal: Cabal (dependency of ghc-pkg-autofix-0.1.2) rejecting: Cabal-1.18.1.3/installed-715... (conflict: Cabal => process==1.2.0.0/installed-163..., ghc-pkg-autofix => process>=1.0 && <1.1) trying: Cabal-1.22.3.0 next goal: process (dependency of ghc-pkg-autofix-0.1.2) rejecting: process-1.2.0.0/installed-163..., 1.2.3.0, 1.2.2.0, 1.2.1.0, 1.2.0.0, 1.1.0.2, 1.1.0.1, 1.1.0.0 (conflict: ghc-pkg-autofix => process>=1.0 && <1.1) rejecting: process-1.0.1.5, 1.0.1.4, 1.0.1.3, 1.0.1.2, 1.0.1.1, 1.0.0.0 (conflict: Cabal => process>=1.1.0.1 && <1.3) Dependency tree exhaustively searched.