Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: opengles (user goal)
rejecting: opengles-0.7.0, 0.6.0 (global constraint requires ==0.5.0)
trying: opengles-0.5.0
trying: base-4.8.1.0/installed-4f7... (dependency of opengles-0.5.0)
next goal: linear-vect (dependency of opengles-0.5.0)
rejecting: linear-vect-0.1.1.0, 0.1.0.0 (conflict:
base==4.8.1.0/installed-4f7..., linear-vect => base>=4.7 && <4.8)
Dependency tree exhaustively searched.