Resolving dependencies... Error: cabal: Could not resolve dependencies: [__0] trying: wild-bind-task-x11-0.2.0.5 (user goal) [__1] trying: wild-bind-indicator-1.0.0.3 (dependency of wild-bind-task-x11) [__2] next goal: gi-gtk (dependency of wild-bind-indicator) [__2] rejecting: gi-gtk-4.0.12 (conflict: wild-bind-indicator => gi-gtk^>=3.0.44) [__2] skipping: gi-gtk-4.0.11, gi-gtk-4.0.10, gi-gtk-4.0.9, gi-gtk-4.0.8, gi-gtk-4.0.6, gi-gtk-4.0.5, gi-gtk-4.0.4, gi-gtk-4.0.3, gi-gtk-4.0.2, gi-gtk-4.0.1 (has the same characteristics that caused the previous version to fail: excluded by constraint '^>=3.0.44' from 'wild-bind-indicator') [__2] trying: gi-gtk-3.0.44 [__3] next goal: gi-gtk3 (dependency of gi-gtk) [__3] rejecting: gi-gtk3-3.0.44 (conflict: pkg-config package gtk+-3.0-any, not found in the pkg-config database) [__3] fail (backjumping, conflict set: gi-gtk, gi-gtk3) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: gi-gtk, wild-bind-indicator, wild-bind-task-x11, gi-gtk3 Try running with --minimize-conflict-set to improve the error message.