docs: def find_csv_packages(m, downloader):
      """Locate the build CSV package, which will have distributions if it was generated  as
      and S3 package"""
      from metapack.package import CsvPackageBuilder
  
      pkg_dir = m.package_root
      name = m.doc.get_value('Root.Name')
  
      package_path, cache_path = CsvPackageBuilder.make_package_path(pkg_dir, name)
  
      if package_path.exists():
          return open_package(package_path, downloader=downloader)