Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: kan-extensions (user goal)
rejecting: kan-extensions-5.0.1, kan-extensions-5, kan-extensions-4.2.3,
kan-extensions-4.2.2, kan-extensions-4.2.1, kan-extensions-4.2,
kan-extensions-4.1.1, kan-extensions-4.1.0.1, kan-extensions-4.1,
kan-extensions-4.0.3, kan-extensions-4.0.2, kan-extensions-4.0.1,
kan-extensions-4.0, kan-extensions-3.7, kan-extensions-3.6.2,
kan-extensions-3.6, kan-extensions-3.5.1, kan-extensions-3.5,
kan-extensions-3.4, kan-extensions-3.1.2, kan-extensions-3.1.1,
kan-extensions-3.1.0.2, kan-extensions-3.1.0.1, kan-extensions-3.1,
kan-extensions-3.0, kan-extensions-2.7, kan-extensions-2.6,
kan-extensions-2.5, kan-extensions-2.4.0.1, kan-extensions-2.4,
kan-extensions-2.3, kan-extensions-2.2, kan-extensions-2.1.2,
kan-extensions-2.1, kan-extensions-2.0.2, kan-extensions-2.0.1,
kan-extensions-2.0.0.3, kan-extensions-2.0.0.2, kan-extensions-2.0.0.1,
kan-extensions-2.0.0, kan-extensions-1.9.0, kan-extensions-1.8.0,
kan-extensions-0.5.1, kan-extensions-0.5.0, kan-extensions-0.2.2,
kan-extensions-0.2.1, kan-extensions-0.2, kan-extensions-0.1.2,
kan-extensions-0.1.1 (constraint from user target requires ==0.1)
trying: kan-extensions-0.1
next goal: base (dependency of kan-extensions-0.1)
rejecting: base-4.9.0.0/installed-4.9... (conflict: kan-extensions => base>=4
&& <4.4)
rejecting: base-4.9.0.0, base-4.8.2.0, base-4.8.1.0, base-4.8.0.0,
base-4.7.0.2, base-4.7.0.1, base-4.7.0.0, base-4.6.0.1, base-4.6.0.0,
base-4.5.1.0, base-4.5.0.0, base-4.4.1.0, base-4.4.0.0, base-4.3.1.0,
base-4.3.0.0, base-4.2.0.2, base-4.2.0.1, base-4.2.0.0, base-4.1.0.0,
base-4.0.0.0, base-3.0.3.2, base-3.0.3.1 (constraint from non-upgradeable
package requires installed instance)
Dependency tree exhaustively searched.