Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: hoopl (user goal)
rejecting: hoopl-3.10.2.1, hoopl-3.10.2.0, hoopl-3.10.1.0, hoopl-3.10.0.2,
hoopl-3.10.0.1, hoopl-3.10.0.0, hoopl-3.9.0.0, hoopl-3.8.7.4, hoopl-3.8.7.3,
hoopl-3.8.7.1, hoopl-3.8.7.0, hoopl-3.8.6.0, hoopl-3.8.3.0, hoopl-3.7.12.1,
hoopl-3.7.8.0, hoopl-3.7.7.0, hoopl-3.7.4.0, hoopl-3.7.3.5, hoopl-3.7.3.4,
hoopl-3.7.3.3, hoopl-3.7.2.2, hoopl-3.7.1.0 (constraint from user target
requires ==3.7.0.0)
trying: hoopl-3.7.0.0
next goal: base (dependency of hoopl-3.7.0.0)
rejecting: base-4.9.0.0/installed-4.9... (conflict: hoopl => base>=3 && <4.8)
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.