Confirmed also with Mint 19.1 with latest packages, if using our internal pypi server. Creating a plain py3 virtualenv fails:
$ virtualenv testenv --python python3 Fails with: File "/home/user/testenv/share/python-wheels/requests-2.18.4-py2.py3-none-any.whl/requests/models.py", line 935, in raise_for_status raise HTTPError(http_error_msg, response=self) requests.exceptions.HTTPError: 404 Client Error: Not Found for url: https://pypi.internal.com/simple/setuptools/ Disabling the internal pypi server from ~/.pip/pip.conf works, but of course removes access to internal packages. Downgrading to previous version as suggested by Daniel Anderson resolved the issue: sudo apt install python3-pip=9.0.1-2 python-pip-whl=9.0.1-2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1833229 Title: `--extra-index-url` not working for PIP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python-pip/+bug/1833229/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs