Stable stein|train py2 devstack based jobs are broken on py2 interpreter

[Ghanshyam Mann]

All py2 devstack based jobs are broken on stable/stein|train, below is the traceback.

https://zuul.opendev.org/t/openstack/build/962fd73a2480441d849e47ac68a46450

/opt/stack/requirements/.venv/share/python-wheels/urllib3-1.22-py2.py3-none-any.whl/urllib3/connectionpool.py:860: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
  Downloading https://mirror-int.dfw.rax.opendev.org/pypifiles/packages/af/e7/02db816dc88c598281bacebbb7ccf2c9f1a6164942e88f1a0fded8643659/setuptools-45.0.0-py2.py3-none-any.whl (583kB)
setuptools requires Python '>=3.5' but the running Python is 2.7.17
----------------------------------------
...Installing setuptools, pkg_resources, pip, wheel...done.
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 2375, in <module>
    main()
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 724, in main
    symlink=options.symlink)
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 992, in create_environment
    download=download,
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 922, in install_wheel
    call_subprocess(cmd, show_stdout=False, extra_env=env, stdin=SCRIPT)
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 817, in call_subprocess
    % (cmd_desc, proc.returncode))
OSError: Command /opt/stack/requirements/.venv/bin/python2 - setuptools pkg_resources pip wheel failed with error code 1
Running virtualenv with interpreter /usr/bin/python2

[Radosław Piliszek (yoctozepto)]

Have not we established it was due to index funkiness?

[Ghanshyam Mann (ghanshyammann)]

yeah nothing to do in devstack, this was due to indexing things.

http://lists.openstack.org/pipermail/openstack-discuss/2021-April/021633.html