def _get_package_url(package_name):
import pkg_resources
from infi.pypi_manager import DjangoPyPI, PyPI
pypi_url = get_pypi_index_url().replace("/simple", "")
pkg_info = pkg_resources.get_distribution(package_name)
pypi = PyPI() if is_official_pypi(pypi_url) else DjangoPyPI(pypi_url)
return pypi.get_source_distribution_url_of_specific_release_version(package_name, pkg_info.version).split("#")[0]
