Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: explore (user goal)
rejecting: explore-0.0.7.2, explore-0.0.7.1, explore-0.0.7.0, explore-0.0.6.2,
explore-0.0.6.1, explore-0.0.6.0, explore-0.0.5.1 (constraint from user target
requires ==0.0.5)
trying: explore-0.0.5
next goal: base (dependency of explore-0.0.5)
rejecting: base-4.9.0.0/installed-4.9... (conflict: explore => base<=4.2)
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.