Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: hfractal (user goal)
rejecting: hfractal-0.4.2.5, 0.4.2.4, 0.4.2.2, 0.4.2.1 (global constraint
requires ==0.4.1)
trying: hfractal-0.4.1
trying: base-4.8.1.0/installed-4f7... (dependency of hfractal-0.4.1)
next goal: OpenGL (dependency of hfractal-0.4.1)
rejecting: OpenGL-2.13.1.0, 2.13.0.0, 2.12.0.1, 2.12.0.0, 2.11.1.0, 2.11.0.0,
2.10.0.2, 2.10.0.1, 2.10.0.0, 2.9.2.0, 2.9.1.0, 2.9.0.0, 2.8.0.0, 2.6.0.1,
2.6.0.0, 2.5.0.0, 2.4.0.2, 2.4.0.1, 2.4.0.0 (conflict: hfractal => OpenGL>=2.3
&& <2.4.0.0)
rejecting: OpenGL-2.3.0.0 (conflict: base==4.8.1.0/installed-4f7..., OpenGL =>
base>=3 && <4.5)
rejecting: OpenGL-2.2.3.1, 2.2.3.0, 2.2.2.0, 2.2.1.1, 2.1 (conflict: hfractal
=> OpenGL>=2.3 && <2.4.0.0)
Dependency tree exhaustively searched.