Resolving dependencies... cabal: Could not resolve dependencies: [__0] trying: funflow-1.3.0 (user goal) [__1] next goal: hinotify (dependency of funflow) [__1] rejecting: hinotify-0.3.10 (conflict: funflow => hinotify==0.3.9) [__1] trying: hinotify-0.3.9 [__2] trying: base-4.11.1.0/installed-4.1... (dependency of funflow) [__3] next goal: async (dependency of funflow) [__3] rejecting: async-2.2.1 (conflict: hinotify => async>=2.0 && <2.2) [__3] rejecting: async-2.1.1.1 (conflict: base==4.11.1.0/installed-4.1..., async => base>=4.3 && <4.11) [__3] rejecting: async-2.1.1, async-2.1.0 (conflict: base==4.11.1.0/installed-4.1..., async => base>=4.3 && <4.10) [__3] rejecting: async-2.0.2 (conflict: base==4.11.1.0/installed-4.1..., async => base>=4.3 && <4.9) [__3] rejecting: async-2.0.1.6, async-2.0.1.5 (conflict: base==4.11.1.0/installed-4.1..., async => base>=4.3 && <4.8) [__3] rejecting: async-2.0.1.4, async-2.0.1.3 (conflict: base==4.11.1.0/installed-4.1..., async => base>=4.3 && <4.7) [__3] rejecting: async-2.0.1.2, async-2.0.1.1, async-2.0.1.0, async-2.0.0.0 (conflict: base==4.11.1.0/installed-4.1..., async => base>=4.3 && <4.6) [__3] rejecting: async-1.4, async-1.3, async-1.2, async-1.1, async-1.0 (conflict: hinotify => async>=2.0 && <2.2) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: async, funflow, hinotify, base