anchor.diff:            "$lib"
         fi
       done
  -  '' + /* set the default search path for DRI drivers; used e.g. by X server */ ''
  +  '' + /* set the default search path for DRI drivers */ ''
       sed -i "$out/lib/pkgconfig/dri.pc" \
         -e 's,$(drivers),${driverSearchPath},'
     '';
  
positive.code:   '' + /* work around bug #529, but maybe $drivers should also be patchelf'd */ ''
      find $drivers/ $osmesa/ -type f -executable -print0 | \
        xargs -0 strip -S || true
    '' + /* add RPATH so the drivers can find the moved libgallium and libdricore9 */ ''
      for lib in $drivers/lib/*.so* $drivers/lib/*/*.so*; do
        if [[ ! -L "$lib" ]] ; then
          patchelf \
  
negative.code:     libglvnd
      libomxil-bellagio
      libpthread-stubs
      #libva  # FIXME: recursive dependency
      libvdpau
      libx11
      libxcb
  