anchor.diff:    src = fetchurl {
       url = "http://http.download.nvidia.com/XFree86/nvidia-settings/"
         + "nvidia-settings-${version}.tar.bz2";
  -    sha256 = "b23f931e3107897ff73c57ce02aa77e8e1dc95559bfa338e898126731a230023";
  +    multihash = "QmadtC9pNfugKUUYqkH5noeyvgLibUWWwnHL3rHCcKHPkU";
  +    sha256 = "a25bcc37c49628b7f370eacd97365709f0897cf526e9d5e6b7e8c8c95813c805";
     };
   
     nativeBuildInputs = [
  
positive.code: , makeWrapper
  
  , adwaita-icon-theme
  , gdk-pixbuf
  , glib
  , gtk_2
  , gtk_3
  , jansson
  , libvdpau
  , mesa_noglu
  , nvidia-drivers_latest
  , pango
  , xorg
  }:
  
  let
    version = "378.13";
  in
  stdenv.mkDerivation rec {
    name = "nvidia-settings-${version}";
  
negative.code: 
    buildInputs = [
      adwaita-icon-theme
      dbus
      gdk-pixbuf
      glib
      gtk_2
      gtk_3
      jansson
      libvdpau
      libx11
      mesa_noglu
      nvidia-drivers_latest
      pango
      randrproto
      renderproto
      videoproto
      xextproto
      xf86vidmodeproto
      xproto
      xorg.libXext
      xorg.libXrandr
      xorg.libXrender
      xorg.libXv
      xorg.libXxf86vm
    ];
  
    postPatch = /* libXv is normally loaded at runtime via LD_LIBRARY_PATH */ ''
  