Resolving dependencies... cabal: Could not resolve dependencies: [__0] next goal: gi-cogl (user goal) [__0] rejecting: gi-cogl-1.0.2 (conflict: pkg-config package cogl-1.0(==1.22 || >1.22) && <1.23, not found in the pkg-config database) [__0] fail (backjumping, conflict set: gi-cogl) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: gi-cogl