anchor.diff: -{stdenv, fetchurl, kernel, xlibs, zlib, gtk, atk, pango, glib}:
  +{stdenv, fetchurl, kernel, xlibs, zlib, gtk, atk, pango, glib, gdk_pixbuf}:
   
   let 
   
  -  versionNumber = "173.14.31";
  +  versionNumber = "173.14.35";
   
   in
   
  
positive.code: 
    cudaPath = stdenv.lib.makeLibraryPath [zlib stdenv.gcc.gcc];
  
    programPath = stdenv.lib.makeLibraryPath [ gtk atk pango glib xlibs.libXv ];
  
    meta = {
      homepage = http://www.nvidia.com/object/unix.html;
  
negative.code:     if stdenv.system == "i686-linux" then
        fetchurl {
          url = "http://us.download.nvidia.com/XFree86/Linux-x86/${versionNumber}/NVIDIA-Linux-x86-${versionNumber}-pkg0.run";
          sha256 = "16kjxj2bn78cgyb4xq39zajjv1hx1z5dw50n9r17w14ifq7i09id";
        }
      else if stdenv.system == "x86_64-linux" then
        fetchurl {
          url = "http://us.download.nvidia.com/XFree86/Linux-x86_64/${versionNumber}/NVIDIA-Linux-x86_64-${versionNumber}-pkg0.run";
          sha256 = "0mk7pj7in090dx2v5yzkd7qkaf0qvz3jv4cmpiflpmzmg9p15x8n";
        }
      else throw "nvidia-x11 does not support platform ${stdenv.system}";
  
  