* A quick hack to get accelerated OpenGL working: just use the driver

in /usr/lib/libGL.so.1 (which will typically load a driver in
  /usr/X11R6/lib/modules/dri).  This has been tested on a i915
  graphics card; it should work with most open source X.org drivers.
  For NVidia's proprietary drivers (which we cannot build ourselves
  anyway), some more symlinks are necessary; I'll add those later.

  So to get hardware-accelerated Quake 3, do:

  $ nix-env -p /nix/var/nix/profiles/opengl -i xorg-sys-opengl
  $ nix-env -i quake3-demo
  $ quake3

svn path=/nixpkgs/trunk/; revision=4613

pkgs/os-specific/linux/opengl/xorg-sys/builder.sh

@@ -0,0 +1,9 @@
+source $stdenv/setup
+
+ensureDir $out/lib
+
+ln -s /usr/lib/libGL.so.1 $out/lib/
+
+for i in $neededLibs; do
+    ln -s $i/lib/*.so* $out/lib/
+done

pkgs/os-specific/linux/opengl/xorg-sys/default.nix

@@ -0,0 +1,15 @@
+# This is a very dirty hack to allow hardware acceleration of OpenGL
+# applications for most (?) users.  It will use the driver that your
+# Linux distribution installed in /usr/lib/libGL.so.1.  Hopefully,
+# this driver uses hardware acceleration.
+#
+# Of course, use of the driver in /usr/lib is highly impure.  But it
+# might actually work ;-)
+
+{stdenv, xlibs, expat}:
+
+stdenv.mkDerivation {
+  name = "xorg-sys-opengl";
+  builder = ./builder.sh;
+  neededLibs = [xlibs.libXxf86vm expat];
+}