NixOS/nixpkgs — pull request #3622 by Fuuzetsu (2014-08-16 03:28:18+00:00)
Title: mark ghc-heap-view/ghc-vis as broken on 7.8.3

I mark -vis broken because it depends on now-broken heap-view but I'm unsure if that's the way to proceed. If we don't do that however then we get evaluation errors about dependending on broken package.