anchor.diff:          chmod -R a-w image
   
           echo "Cooking the image..."
  -        tar -C image --hard-dereference --mtime="@$SOURCE_DATE_EPOCH" --owner=0 --group=0 --xform s:'./':: -c . | pigz -nT > $out
  +        tar -C image --hard-dereference --sort=name --mtime="@$SOURCE_DATE_EPOCH" --owner=0 --group=0 --xform s:'./':: -c . | pigz -nT > $out
   
           echo "Finished."
         '';
  
positive.code: 
        postMount = ''
          echo "Packing raw image..."
          tar -C mnt --hard-dereference --mtime="@$SOURCE_DATE_EPOCH" -cf $out .
        '';
      };
  
  
negative.code:         comm <(sort -n baseFiles|uniq) \
               <(sort -n layerFiles|uniq|grep -v ${layer}) -1 -3 > newFiles
          # Append the new files to the layer.
          tar -rpf temp/layer.tar --hard-dereference --sort=name --mtime="@$SOURCE_DATE_EPOCH" \
            --owner=0 --group=0 --no-recursion --files-from newFiles
  
          echo "Adding meta..."
  