Resolving dependencies... Error: cabal: Could not resolve dependencies: [__0] next goal: gi-cogl (user goal) [__0] rejecting: gi-cogl-1.0.5 (conflict: pkg-config package cogl-1.0>=1.22 && <1.23, not found in the pkg-config database) [__0] rejecting: gi-cogl-1.0.3, gi-cogl-1.0.2 (constraint from user target requires ==1.0.5) [__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