{
  runCommand,
  zopfli,
  brotli,
  findutils,
  e11sync-djangostatic,
}:
runCommand "e11sync-static" {
  src = e11sync-djangostatic;
  nativeBuildInputs = [findutils];
} ''
  unpackPhase
  find e11sync-djangostatic \
      -name '*.css' -or \
      -name '*.js' -or \
      -name '*.svg' -or \
      -name '*.txt' | \
      tee >(xargs -n1 -P''$(nproc) ${zopfli}/bin/zopfli) | \
      xargs -n1 -P''$(nproc) ${brotli}/bin/brotli
  mv e11sync-djangostatic $out
''