Resolving dependencies...
cabal: Could not resolve dependencies:
trying: scenegraph-0.1.0.2 (user goal)
trying: base-4.9.0.0/installed-4.9... (dependency of scenegraph-0.1.0.2)
next goal: fgl (dependency of scenegraph-0.1.0.2)
rejecting: fgl-5.5.3.0, fgl-5.5.2.3, fgl-5.5.2.2, fgl-5.5.2.1, fgl-5.5.2.0,
fgl-5.5.1.0, fgl-5.5.0.1, fgl-5.5.0.0, fgl-5.4.2.4, fgl-5.4.2.3 (conflict:
scenegraph => fgl==5.4.2.2)
rejecting: fgl-5.4.2.2 (conflict: base==4.9.0.0/installed-4.9..., fgl =>
base<4.4)
rejecting: fgl-5.4.2.0, fgl-5.4.1.1, fgl-5.3 (conflict: scenegraph =>
fgl==5.4.2.2)
Dependency tree exhaustively searched.