Resolving dependencies...
cabal: Could not resolve dependencies:
trying: superbubbles-0.1.0 (user goal)
next goal: containers (dependency of superbubbles-0.1.0)
rejecting: containers-0.5.7.1/installed-0.5..., containers-0.5.10.2,
containers-0.5.10.1, containers-0.5.9.2, containers-0.5.8.2,
containers-0.5.7.1, containers-0.5.7.0, containers-0.5.6.3,
containers-0.5.6.2, containers-0.5.6.1, containers-0.5.6.0,
containers-0.5.5.1, containers-0.5.5.0, containers-0.5.4.0,
containers-0.5.3.1, containers-0.5.3.0, containers-0.5.2.1,
containers-0.5.2.0, containers-0.5.1.0, containers-0.5.0.0,
containers-0.4.2.1, containers-0.4.2.0, containers-0.4.1.0,
containers-0.4.0.0, containers-0.3.0.0, containers-0.2.0.1,
containers-0.2.0.0, containers-0.1.0.1, containers-0.1.0.0,
containers-0.5.9.1, containers-0.5.8.1 (conflict: superbubbles =>
containers>=4.7 && <5)
Dependency tree exhaustively searched.