Recently, OpenGL was disabled on stackage: commercialhaskell/stackage#6486 It has many dependencies, such as gloss, which were consequently disabled as well. The main reason seems to be the constraint bytestring < 0.11 in version 3.0.3.0, which is already removed on master. I don't know whether there are other problems that might arise, but if they do, I'm willing to help and send PRs to fix further problems.