Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: music-preludes (user goal)
rejecting: music-preludes-1.9.0, 1.8.1, 1.8, 1.7.2, 1.7.1, 1.7, 1.6.2 (global
constraint requires ==1.6.1)
trying: music-preludes-1.6.1
next goal: music-score (dependency of music-preludes-1.6.1)
rejecting: music-score-1.9.0, 1.8.1, 1.8, 1.7.2, 1.7.1, 1.7, 1.6.2, 1.6.1
(conflict: music-preludes => music-score==1.6)
trying: music-score-1.6
trying: HCodecs-0.5 (dependency of music-score-1.6)
next goal: QuickCheck (dependency of music-score-1.6)
rejecting: QuickCheck-2.8.1, 2.8, 2.7.6, 2.7.5, 2.7.4, 2.7.3, 2.7.2, 2.7.1,
2.7, 2.6, 2.5.1.1, 2.5.1, 2.5, 2.4.2, 2.4.1.1, 2.4.1, 2.4.0.1, 2.4, 2.3.0.2,
2.3.0.1, 2.3, 2.2, 2.1.2, 2.1.1.1, 2.1.1, 2.1.0.3, 2.1.0.2, 2.1.0.1, 2.1
(conflict: music-score => QuickCheck>=1.2 && <1.3)
rejecting: QuickCheck-1.2.0.1, 1.2.0.0 (conflict: HCodecs => QuickCheck>=2.0)
rejecting: QuickCheck-1.1.0.0, 1.0 (conflict: music-score => QuickCheck>=1.2
&& <1.3)
Dependency tree exhaustively searched.