Resolving dependencies... cabal: Could not resolve dependencies: [__0] next goal: gi-wnck (user goal) [__0] rejecting: gi-wnck-3.0.10 (conflict: pkg-config package libwnck-3.0-any, not found in the pkg-config database) [__0] rejecting: gi-wnck-3.0.9, gi-wnck-3.0.8, gi-wnck-3.0.7, gi-wnck-3.0.6, gi-wnck-3.0.5, gi-wnck-3.0.4, gi-wnck-3.0.3, gi-wnck-3.0.1 (constraint from user target requires ==3.0.10) [__0] fail (backjumping, conflict set: gi-wnck) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: gi-wnck