{
  self,
  stdenv,
  runCommand,
  makeWrapper,
  python3,
  python3Packages,
  libmaxminddb,
  dart-sass,
  gunicornPort ? 8001,
  geoip-archive,
}:
stdenv.mkDerivation {
  name = "e11sync";
  propagatedBuildInputs = [
    python3Packages.django_5
    python3Packages.django-compressor
    python3Packages.geoip2
    libmaxminddb
  ];
  nativeBuildInputs = [makeWrapper];
  src = self;
  dontUnpack = true;
  buildPhase = ''
    mkdir -p $out;
    cp -r ${self}/app $out
    makeWrapper ${python3Packages.gunicorn}/bin/gunicorn $out/bin/e11sync-gunicorn \
      --chdir $out/app \
      --set-default E11SYNC_HTTP_PORT ${toString gunicornPort} \
      --set E11SYNC_DEBUG "" \
      --set E11SYNC_COMPRESS_OFFLINE 1 \
      --set GEOIP_PATH "${geoip-archive}" \
      --add-flags --bind=127.0.0.1:\$E11SYNC_HTTP_PORT \
      --add-flags e11sync.wsgi

    makeWrapper $out/app/manage.py $out/bin/e11sync \
      --set GEOIP_PATH "${geoip-archive}"
  '';
  passthru.tests = {
    simple =
      runCommand "e11sync-test" {
        src = self;
        buildInputs = [
          python3Packages.django_5
          python3Packages.django-compressor
          python3Packages.geoip2
          dart-sass
        ];
      } ''
        mkdir -p $out
        cd ${self}/app
        export GEOIP_PATH="${geoip-archive}"
        ${python3}/bin/python3 ./manage.py test
      '';
  };
}