Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: comonads-fd (user goal)
rejecting: comonads-fd-4.0, 3.0.3, 3.0.2, 3.0.1, 3.0, 2.1.2, 2.1.1.2, 2.1.1.1,
2.1.1, 2.1, 2.0.2.1, 2.0.2, 2.0.1, 2.0, 1.8.0.3, 1.8.0.2, 1.8.0, 1.7, 1.6.3,
1.6.1, 1.5.2.2, 1.5.0.1, 1.5.0, 1.4.0, 1.3.0, 1.0.0, 0.9.0, 0.7.0 (global
constraint requires ==0.6.0)
trying: comonads-fd-0.6.0
next goal: base (dependency of comonads-fd-0.6.0)
rejecting: base-4.7.0.1/installed-e4b... (conflict: comonads-fd => base>=4 &&
<4.4)
rejecting: base-4.8.0.0, 4.7.0.2, 4.7.0.1, 4.7.0.0, 4.6.0.1, 4.6.0.0, 4.5.1.0,
4.5.0.0, 4.4.1.0, 4.4.0.0, 4.3.1.0, 4.3.0.0, 4.2.0.2, 4.2.0.1, 4.2.0.0,
4.1.0.0, 4.0.0.0, 3.0.3.2, 3.0.3.1 (global constraint requires installed
instance)
Dependency tree exhaustively searched.