Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: comonad-transformers (user goal)
rejecting: comonad-transformers-4.0, 3.1, 3.0.4, 3.0.3, 3.0.2, 3.0.1, 3.0.0.1,
3.0, 2.1.2, 2.1.1.1, 2.1.1, 2.1, 2.0.3, 2.0.2, 2.0.0, 1.8.0.3, 1.8.0.2,
1.8.0.1, 1.8.0, 1.7, 1.6.3, 1.6.2, 1.6.1, 1.6.0, 1.5.3, 1.5.2.6, 1.5.2.5,
1.5.2.3, 1.5.2.2, 1.5.2.1, 1.5.2, 1.5.0.4, 1.5.0.2, 1.5.0.1, 1.5.0, 1.4.0,
1.3.0.1, 1.3.0, 1.2.1, 1.2.0, 1.1.0, 1.0.1, 1.0.0, 0.10.1.1, 0.10.1, 0.10.0,
0.9.0, 0.7.0, 0.6.5, 0.6.2 (global constraint requires ==0.6.1)
trying: comonad-transformers-0.6.1
next goal: base (dependency of comonad-transformers-0.6.1)
rejecting: base-4.8.1.0/installed-4f7... (conflict: comonad-transformers =>
base>=4 && <4.4)
rejecting: base-4.8.1.0, 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.