Resolving dependencies... cabal: Could not resolve dependencies: next goal: ghc-pkg-autofix (user goal) rejecting: ghc-pkg-autofix-0.2.0.1, ghc-pkg-autofix-0.2.0 (constraint from user target requires ==0.1.4) trying: ghc-pkg-autofix-0.1.4 next goal: Cabal (dependency of ghc-pkg-autofix-0.1.4) rejecting: Cabal-1.24.0.0/installed-1.2... (conflict: Cabal => process==1.4.2.0/installed-1.4..., ghc-pkg-autofix => process>=1.0 && <1.1) trying: Cabal-1.24.2.0 next goal: process (dependency of ghc-pkg-autofix-0.1.4) rejecting: process-1.4.2.0/installed-1.4..., process-1.4.3.0, process-1.4.2.0, process-1.4.1.0, process-1.4.0.0, process-1.3.0.0, process-1.2.3.0, process-1.2.2.0, process-1.2.1.0, process-1.2.0.0, process-1.1.0.2, process-1.1.0.1, process-1.1.0.0 (conflict: ghc-pkg-autofix => process>=1.0 && <1.1) rejecting: process-1.0.1.5, process-1.0.1.4, process-1.0.1.3, process-1.0.1.2, process-1.0.1.1, process-1.0.0.0 (conflict: Cabal => process>=1.1.0.1 && <1.5) Dependency tree exhaustively searched.