Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: HipmunkPlayground (user goal)
rejecting: HipmunkPlayground-5.2.1.1, 5.2.1, 5.2.0.8 (global constraint
requires ==5.2.0.7)
trying: HipmunkPlayground-5.2.0.7
trying: base-4.8.1.0/installed-4f7... (dependency of
HipmunkPlayground-5.2.0.7)
next goal: OpenGL (dependency of HipmunkPlayground-5.2.0.7)
rejecting: OpenGL-2.13.1.1, 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 (conflict: HipmunkPlayground => OpenGL>=2.4 && <2.6)
trying: OpenGL-2.5.0.0
next goal: Tensor (dependency of OpenGL-2.5.0.0)
rejecting: Tensor-1.1.0.1, 1.1.0.0 (conflict: OpenGL => Tensor==1.0.*)
rejecting: Tensor-1.0.0.1, 1.0.0.0 (conflict: base==4.8.1.0/installed-4f7...,
Tensor => base>=3 && <4.7)
Dependency tree exhaustively searched.