stable/juno unit tests blocked: ContextualVersionConflict: (oslo.i18n 1.3.1 (/home/jenkins/workspace/periodic-glance-python27-juno/.tox/py27/lib/python2.7/site-packages), Requirement.parse('oslo.i18n>=1.5.0'), set(['oslo.utils', 'pycadf']))

[Adam Gandelman]

stable/juno unit tests are failing on (multiple) dependency conflicts. Reproducible outside the gate simply running the py27 or py26 tox env locally:

Tests in glance.tests.unit.test_opts fail with:

ContextualVersionConflict: (oslo.i18n 1.3.1 (/home/jenkins/workspace/periodic-glance-python27-juno/.tox/py27/lib/python2.7/site-packages), Requirement.parse('oslo.i18n>=1.5.0'), set(['oslo.utils', 'pycadf']))

This isn't affecting stable/juno tempest runs of this stuff since devstack sets up libraries directly from tip of the stable branches, where requirements have been updated to avoid this. Those fixes haven't been pushed out via releases to pypi, which is what the unit tests rely on.

There are two paths of conflict

glance (stable/juno) (keystonemiddleware>=1.0.0,<1.4.0)
  -> keystonemiddleware (1.3.1) (pycadf>=0.6.0)
      -> pycadf (0.9.0)
          -> CONFLICT oslo.config>=1.9.3 # Apache-2.0
          -> CONFLICT oslo.i18n>=1.5.0 # Apache-2.0

As per GR, we should be getting pycadf>=0.6.0,!=0.6.2,<0.7.0, but keystomemiddleware's uncapped dep is pulling in the newer.
https://review.openstack.org/#/c/173123/ resolves the issue by adding the proper stable/juno caps to keystonemiddleware stable/juno, but it looks like those changes need to be released as keystonemiddlware 1.3.2

[Dolph Mathews (dolph)]

https://review.openstack.org/#/c/173123/ has merged.