File _service of Package mercurial

<services>
  <service name="cargo_vendor" mode="manual">
    <param name="src">mercurial-*.tar.gz</param>
    <param name="custom-root">rust</param>
    <param name="compression">zst</param>
    <param name="update">true</param>
    <param name="tag">rust</param>
  </service>
</services>