Resolving dependencies...
cabal: Could not resolve dependencies:
trying: scenegraph-0.1.0.2 (user goal)
trying: base-4.8.1.0/installed-4f7... (dependency of scenegraph-0.1.0.2)
next goal: fgl (dependency of scenegraph-0.1.0.2)
rejecting: fgl-5.5.2.3, 5.5.2.2, 5.5.2.1, 5.5.2.0, 5.5.1.0, 5.5.0.1, 5.5.0.0,
5.4.2.4, 5.4.2.3 (conflict: scenegraph => fgl==5.4.2.2)
rejecting: fgl-5.4.2.2 (conflict: base==4.8.1.0/installed-4f7..., fgl =>
base<4.4)
rejecting: fgl-5.4.2.0, 5.4.1.1, 5.3 (conflict: scenegraph => fgl==5.4.2.2)
Dependency tree exhaustively searched.