anchor.diff:    '';
   
     postFixup = ''
  -    patchelf --set-rpath "$(patchelf --print-rpath $out/bin/nvidia-settings):$out/lib:${nvidia_x11}/lib" \
  +    patchelf --set-rpath "$(patchelf --print-rpath $out/bin/nvidia-settings):$out/lib" \
         $out/bin/nvidia-settings
     '';
   
  
positive.code: nvidia_x11: sha256:
  
  { stdenv, lib, fetchurl, pkgconfig, m4, gtk2, gtk3, libXv, libvdpau
  , withGtk2 ? false, withGtk3 ? true
  }:
  
  
negative.code: 
    nativeBuildInputs = [ pkgconfig m4 ];
  
    buildInputs = [ jansson gtk2 gtk3 libXv libXrandr libvdpau nvidia_x11 ];
  
    NIX_LDFLAGS = [ "-lvdpau" "-lXrandr" "-lXv" "-lnvidia-ml" ];
  
    makeFlags = [ "NV_USE_BUNDLED_LIBJANSSON=0" ];
    installFlags = [ "PREFIX=$(out)" ];
  
    preBuild = ''
  