Resolving dependencies... cabal: Could not resolve dependencies: [__0] next goal: menoh (user goal) [__0] rejecting: menoh-0.2.0 (conflict: pkg-config package menoh>=1.0.0 && <2.0.0, not found in the pkg-config database) [__0] rejecting: menoh-0.1.1, menoh-0.1.0 (constraint from user target requires ==0.2.0) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: menoh