Resolving dependencies...
cabal: Could not resolve dependencies:
trying: midi-0.2.2.2 (user goal)
next goal: monoid-transformer (dependency of midi-0.2.2.2)
rejecting: monoid-transformer-0.0.3, monoid-transformer-0.0.2,
monoid-transformer-0.0.1 (conflict: midi => monoid-transformer>=0.0.4 && <0.1)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: midi, monoid-transformer