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, ghc-pkg-autofix-0.1.4, ghc-pkg-autofix-0.1.3, ghc-pkg-autofix-0.1.2, ghc-pkg-autofix-0.1.1 (constraint from user target requires ==0.1) trying: ghc-pkg-autofix-0.1 next goal: base (dependency of ghc-pkg-autofix-0.1) rejecting: base-4.9.0.0/installed-4.9... (conflict: ghc-pkg-autofix => base>=3 && <4) rejecting: base-4.9.0.0, base-4.8.2.0, base-4.8.1.0, base-4.8.0.0, base-4.7.0.2, base-4.7.0.1, base-4.7.0.0, base-4.6.0.1, base-4.6.0.0, base-4.5.1.0, base-4.5.0.0, base-4.4.1.0, base-4.4.0.0, base-4.3.1.0, base-4.3.0.0, base-4.2.0.2, base-4.2.0.1, base-4.2.0.0, base-4.1.0.0, base-4.0.0.0, base-3.0.3.2, base-3.0.3.1 (constraint from non-upgradeable package requires installed instance) Dependency tree exhaustively searched.