Message 202530 - Python tracker

Donald, I know you've been busy with PyPI v2.0 the last few days, but I see the pull request to resolve https://github.com/pypa/pip/issues/1294 has been merged.

If we can get an updated patch that sets ENSUREPIP_OPTIONS appropriately in the process environment, it should be possible to commit this one and let Ned and Martin get started on the installers.