Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: penny-lib (user goal)
rejecting: penny-lib-0.22.0.0, 0.21.0.0, 0.20.0.0 (global constraint requires
==0.18.0.0)
trying: penny-lib-0.18.0.0
trying: random-shuffle-0.0.4 (dependency of penny-lib-0.18.0.0)
trying: MonadRandom-0.4 (dependency of random-shuffle-0.0.4)
trying: mtl-2.2.1 (dependency of MonadRandom-0.4)
next goal: transformers (dependency of penny-lib-0.18.0.0)
rejecting: transformers-0.3.0.0/installed-16a... (conflict: mtl =>
transformers==0.4.*)
rejecting: transformers-0.4.3.0, 0.4.2.0, 0.4.1.0 (conflict: penny-lib =>
transformers==0.3.*)
rejecting: transformers-0.3.0.0 (conflict: mtl => transformers==0.4.*)
rejecting: transformers-0.2.2.1, 0.2.2.0, 0.2.1.0, 0.2.0.0, 0.1.4.0, 0.1.3.0,
0.1.1.0, 0.1.0.1, 0.1.0.0, 0.0.1.0, 0.0.0.0, 0.4.0.0 (conflict: penny-lib =>
transformers==0.3.*)
Dependency tree exhaustively searched.