Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: music-score (dependency of music-preludes-1.6.1)
rejecting: music-score-1.9.0, music-score-1.8.1, music-score-1.8,
music-score-1.7.2, music-score-1.7.1, music-score-1.7, music-score-1.6.2,
music-score-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-2.9.2, QuickCheck-2.9.1, QuickCheck-2.9,
QuickCheck-2.8.2, QuickCheck-2.8.1, QuickCheck-2.8, QuickCheck-2.7.6,
QuickCheck-2.7.5, QuickCheck-2.7.4, QuickCheck-2.7.3, QuickCheck-2.7.2,
QuickCheck-2.7.1, QuickCheck-2.7, QuickCheck-2.6, QuickCheck-2.5.1.1,
QuickCheck-2.5.1, QuickCheck-2.5, QuickCheck-2.4.2, QuickCheck-2.4.1.1,
QuickCheck-2.4.1, QuickCheck-2.4.0.1, QuickCheck-2.4, QuickCheck-2.3.0.2,
QuickCheck-2.3.0.1, QuickCheck-2.3, QuickCheck-2.2, QuickCheck-2.1.2,
QuickCheck-2.1.1.1, QuickCheck-2.1.1, QuickCheck-2.1.0.3, QuickCheck-2.1.0.2,
QuickCheck-2.1.0.1, QuickCheck-2.1 (conflict: music-score => QuickCheck>=1.2
&& <1.3)
rejecting: QuickCheck-1.2.0.1, QuickCheck-1.2.0.0 (conflict: HCodecs =>
QuickCheck>=2.0)
rejecting: QuickCheck-1.1.0.0, QuickCheck-1.0 (conflict: music-score =>
QuickCheck>=1.2 && <1.3)
Dependency tree exhaustively searched.