Master jobs running on vexx cloud failing during task - Install deps from upper-constraints, ERROR: Cannot install -r /home/zuul/src/opendev.org/openstack/python-tripleoclient/requirements.txt (line 14) because these package versions have conflicting dependencies.

[Sandeep Yadav]

Description:

Master jobs running on vexx cloud failing during task - Install deps from upper-constraints, ERROR: Cannot install -r /home/zuul/src/opendev.org/openstack/python-tripleoclient/requirements.txt (line 14) because these package versions have conflicting dependencies.

https://logserver.rdoproject.org/openstack-periodic-integration-main/opendev.org/openstack/tripleo-ci/master/periodic-tripleo-ci-build-containers-centos-9-push-master/42775b6/job-output.txt

~~~
INFO: pip is looking at multiple versions of pbr to determine which version is compatible with other requirements. This could take a while.

The conflict is caused by:
    tripleo-common 16.4.0 depends on oslo.log>=3.36.0
    The user requested (constraint) oslo-log===5.0.0

To fix this you could try to:
1. loosen the range of package versions you've specified
2. remove package versions to allow pip attempt to solve the dependency conflict

:stderr: ERROR: Cannot install -r /home/zuul/src/opendev.org/openstack/python-tripleoclient/requirements.txt (line 14) because these package versions have conflicting dependencies.
ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/user_guide/#fixing-conflicting-dependencies
WARNING: You are using pip version 21.2.3; however, version 22.1.1 is available.
You should consider upgrading via the '/home/zuul/workspace/venv_build/bin/python3 -m pip install --upgrade pip' command.
~~~

Reproducer step:-

1) git clone https://github.com/openstack/python-tripleoclient.git
2) cd python-tripleoclient
3) python3 -m venv test1
4) source test1/bin/activate
5) pip install -r requirements.txt -c https://raw.githubusercontent.com/openstack/requirements/master/upper-constraints.txt -i http://mirror.regionone.vexxhost-nodepool-tripleo.rdoproject.org/pypi/simple --trusted-host mirror.regionone.vexxhost-nodepool-tripleo.rdoproject.org

If we remove --index-url from vexxhost in above command, we don't hit the issue.

Looks like same bug as https://bugs.launchpad.net/tripleo/+bug/1972765 where we had to clear the vexx pypi mirror cache.

[Sandeep Yadav (sandeepyadav93)]

Issue cleared after vexx pypi cache was cleared by infra team.

[Sandeep Yadav (sandeepyadav93)]

https://review.rdoproject.org/zuul/build/0f1ed33de8474a36ad3b55eb2d403f26

fixed now.