Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: music-score (user goal)
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 (constraint from user target requires
==1.7)
trying: music-score-1.7
trying: base-4.9.0.0/installed-4.9... (dependency of music-score-1.7)
next goal: vector-space-points (dependency of music-score-1.7)
rejecting: vector-space-points-0.2.1.2, vector-space-points-0.2.1.1,
vector-space-points-0.2.1, vector-space-points-0.2 (conflict: music-score =>
vector-space-points==0.1.3)
rejecting: vector-space-points-0.1.3 (conflict:
base==4.9.0.0/installed-4.9..., vector-space-points => base>=4.0 && <4.8)
rejecting: vector-space-points-0.1.2.1, vector-space-points-0.1.2.0,
vector-space-points-0.1.1.1, vector-space-points-0.1.1.0,
vector-space-points-0.1.0.0 (conflict: music-score =>
vector-space-points==0.1.3)
Dependency tree exhaustively searched.