Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: music-graphics (user goal)
rejecting: music-graphics-1.8.1, 1.8, 1.7.2, 1.7.1 (global constraint requires
==1.7)
trying: music-graphics-1.7
trying: diagrams-lib-1.3.0.1 (dependency of music-graphics-1.7)
trying: adjunctions-4.2.1 (dependency of diagrams-lib-1.3.0.1)
trying: contravariant-1.3.1.1 (dependency of adjunctions-4.2.1)
next goal: music-score (dependency of music-graphics-1.7)
rejecting: music-score-1.8.1, 1.8, 1.7.2, 1.7.1 (conflict: music-graphics =>
music-score==1.7)
rejecting: music-score-1.7 (conflict: contravariant==1.3.1.1, music-score =>
contravariant>=0.4.4 && <1)
rejecting: music-score-1.6.2, 1.6.1, 1.6, 1.3.1, 1.3, 1.2.2, 1.2.1, 1.2
(conflict: music-graphics => music-score==1.7)
Backjump limit reached (change with --max-backjumps).