Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: flower (user goal)
rejecting: flower-0.7.2, flower-0.7, flower-0.6.5, flower-0.6.3, flower-0.6.1,
flower-0.6, flower-0.5, flower-0.4, flower-0.3 (constraint from user target
requires ==0.2)
trying: flower-0.2
next goal: base (dependency of flower-0.2)
rejecting: base-4.9.0.0/installed-4.9... (conflict: flower => base>=3 && <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.