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, 2.0.0.2, 2.0.0.1, 2.0.0, 1.9.0, 1.8.0, 0.5.1, 0.5.0,
0.2.2, 0.2.1, 0.2, 0.1.2, 0.1.1 (global constraint requires ==0.1)
trying: kan-extensions-0.1
next goal: base (dependency of kan-extensions-0.1)
rejecting: base-4.8.1.0/installed-4f7... (conflict: kan-extensions => 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.