NixOS/nixpkgs — pull request #423 by offlinehacker (2013-03-30 10:56:54+00:00)
Title: Add xf86videodummy and xf86inputvoid to xorg overrides (pixman fix)

Now xf86videodummy and xf86inputvoid compiles and we can run dummy xorgserver as non root user (usefull for vnc, xpra, nx,...)