kilo: pkg_resources.ContextualVersionConflict: (fixtures 1.2.1 (/home/jenkins/workspace/periodic-ceilometer-python27-kilo/.tox/py27/lib/python2.7/site-packages), Requirement.parse('fixtures>=1.3.0'), set(['testtools']))

[Matt Riedemann]

http://logs.openstack.org/periodic-stable/periodic-ceilometer-python27-kilo/028b5e5/console.html#_2016-03-10_06_13_29_443

The problem is testscenarios is uncapped and installed before testtools in test-requirements.txt for ceilometer:

Collecting testtools (from testscenarios>=0.4->oslo.db<1.8.0,>=1.7.0->ceilometer==2015.1.4.dev5)

https://github.com/openstack/ceilometer/blob/stable/kilo/test-requirements.txt#L28

We just have to install testtools first.

[Matt Riedemann (mriedem)]

Ah damn, so oslo.db==1.7.3 is getting installed, which requires:

https://github.com/openstack/oslo.db/blob/1.7.3/requirements.txt#L17

Which pulls in testscenarios>=0.4 from it's requirements.txt, and oslo.db is installed from ceilometer's requirements.txt, which gets installed before test-requirements.txt, so we don't get our re-order or cap we can do...

We can't really cap testscenarios in stable/kilo because it has no version range on testtools:

https://github.com/testing-cabal/testscenarios/blob/0.5/requirements.txt#L2

[Matt Riedemann (mriedem)]

We have to put the testtools dep capped in requirements.txt in oslo.db and release that as 1.7.4.

[Matt Riedemann (mriedem)]

Kilo oslo.db patch: https://review.openstack.org/#/c/291447/

[Davanum Srinivas (DIMS) (dims-v)]

This issue was fixed in the openstack/oslo.db 1.7.4 release.