anchor.diff:          chmod -R a-w image
   
           echo Cooking the image
  -        tar -C image -c . | pigz > $out
  +        tar -C image --mtime=0 -c . | pigz -nT > $out
         '';
   
       in
  
positive.code:       
        echo Packing layer
        mkdir $out
        tar -C layer -cf $out/layer.tar .
        ts=$(${tarsum} < $out/layer.tar)
        cat ${baseJson} | jshon -s "$ts" -i checksum > $out/json
        echo -n "1.0" > $out/VERSION
  
negative.code: 
        postMount = ''
          echo Packing raw image
          tar -C mnt --mtime=0 -cf $out .
        '';
      };
      
  