Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: kan-extensions (user goal)
rejecting: kan-extensions-4.2.3, 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
trying: base-4.8.1.0/installed-4f7... (dependency of kan-extensions-2.0.0.2)
next goal: adjunctions (dependency of kan-extensions-2.0.0.2)
rejecting: adjunctions-4.2.2, 4.2.1, 4.2, 4.1.0.1, 4.0.3, 4.0.2, 4.0.1, 4.0,
3.2.1.1, 3.2.1, 3.2, 3.1, 3.0.1, 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 (conflict: kan-extensions => adjunctions>=2.0 && <2.1)
rejecting: adjunctions-2.0.5 (conflict: representable-functors==2.0.2,
adjunctions => representable-functors>=2.1.2 && <2.2)
rejecting: adjunctions-2.0.4 (conflict: representable-functors==2.0.2,
adjunctions => representable-functors>=2.1 && <2.2)
trying: adjunctions-2.0.3
next goal: void (dependency of adjunctions-2.0.3)
rejecting: void-0.7.1, 0.7, 0.6.1, 0.6 (conflict: adjunctions => void>=0.5.4.3
&& <0.6)
rejecting: void-0.5.12, 0.5.11, 0.5.10, 0.5.8, 0.5.7, 0.5.6, 0.5.5.1, 0.5.5,
0.5.4.3 (conflict: base==4.8.1.0/installed-4f7..., void => base>=3 && <4.8)
rejecting: void-0.5.4.2, 0.5.4.1, 0.5.4, 0.5.3, 0.5.2, 0.5.1, 0.5.0, 0.4, 0.3,
0.2, 0.1 (conflict: adjunctions => void>=0.5.4.3 && <0.6)
Dependency tree exhaustively searched.