Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: monoids (user goal)
rejecting: monoids-0.3.2, monoids-0.2.0.4, monoids-0.2.0.3, monoids-0.2.0.2,
monoids-0.2.0.1, monoids-0.2.0, monoids-0.1.36, monoids-0.1.33,
monoids-0.1.32, monoids-0.1.31, monoids-0.1.30, monoids-0.1.28,
monoids-0.1.25, monoids-0.1.21, monoids-0.1.20, monoids-0.1.19,
monoids-0.1.17, monoids-0.1.13 (constraint from user target requires ==0.1.10)
trying: monoids-0.1.10
next goal: base (dependency of monoids-0.1.10)
rejecting: base-4.9.0.0/installed-4.9... (conflict: monoids => base>=4 &&
<4.1)
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.