Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: kan-extensions (user goal)
rejecting: kan-extensions-4.2.2, 4.2.1, 4.2, 4.1.1, 4.1.0.1, 4.1, 4.0.3,
4.0.2, 4.0.1, 4.0, 3.7, 3.6.2, 3.6, 3.5.1, 3.5, 3.4, 3.1.2, 3.1.1, 3.1.0.2,
3.1.0.1, 3.1, 3.0, 2.7, 2.6, 2.5, 2.4.0.1, 2.4, 2.3, 2.2, 2.1.2, 2.1, 2.0.2,
2.0.1, 2.0.0.3 (global constraint requires ==2.0.0.2)
trying: kan-extensions-2.0.0.2
next goal: representable-functors (dependency of kan-extensions-2.0.0.2)
rejecting: representable-functors-3.2.0.2, 3.2.0.1, 3.1, 3.0.1, 3.0.0.3,
3.0.0.2, 3.0.0.1, 3.0, 2.5, 2.4.0.2, 2.4.0.1, 2.4, 2.2.1.1, 2.2.1, 2.2, 2.1.2,
2.1 (conflict: kan-extensions => representable-functors>=2.0 && <2.1)
trying: representable-functors-2.0.2
next goal: free (dependency of kan-extensions-2.0.0.2)
rejecting: free-4.12.1, 4.12, 4.11, 4.10.0.1, 4.9, 4.8.0.1, 4.8, 4.7.1, 4.7,
4.6.1, 4.6, 4.5, 4.4, 4.2, 4.1, 4.0, 3.4.2, 3.4.1, 3.4, 3.3.1, 3.3.0.2,
3.3.0.1, 3.3, 3.2, 3.1.1, 3.1, 3.0, 2.2, 2.1.1.1, 2.1.1, 2.1, 2.0.3, 2.0.2,
2.0.1.1, 2.0.1, 2.0 (conflict: kan-extensions => free>=1.8 && <1.9)
rejecting: free-1.8.0.4, 1.8.0.3, 1.8.0.1, 1.8.0 (conflict:
representable-functors => free>=2.0 && <2.1)
rejecting: free-0.2.3, 0.2.2, 0.2.1, 0.2.0, 0.1.1, 0.1.0 (conflict:
kan-extensions => free>=1.8 && <1.9)
Dependency tree exhaustively searched.