Resolving dependencies... cabal: Could not resolve dependencies: [__0] trying: reflex-dom-fragment-shader-canvas-0.2 (user goal) [__1] next goal: reflex-dom (dependency of reflex-dom-fragment-shader-canvas) [__1] rejecting: reflex-dom-0.3, reflex-dom-0.2, reflex-dom-0.1.1, reflex-dom-0.1 (conflict: reflex-dom-fragment-shader-canvas => reflex-dom>=0.4) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: reflex-dom-fragment-shader-canvas, reflex-dom