Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: musicw-0.3.5.2 (user goal)
[__1] unknown package: ghcjs-prim (dependency of musicw)
[__1] fail (backjumping, conflict set: ghcjs-prim, musicw)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: musicw, ghcjs-prim