NixOS/nixpkgs — pull request #1608 by iElectric (2014-01-26 23:38:32+00:00)
Title: Try to get virtualbox opengl support to work

I've tried to get opengl to work in virtualbox.

To reproduce deploy a simple nixos machine with nixops and run (make sure you enable 3D acceleration in display settings first):

```
$ LIBGL_DEBUG=verbose glxinfo
Error: couldn't find RGB GLX visual or fbconfig
```