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<p class="MsoNormal">About 3 hours ago a new version of Pip was released to the pypi site.<o:p></o:p></p>
<p class="MsoNormal"><a href="https://pypi.org/project/pip/19.0/">https://pypi.org/project/pip/19.0/</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Tox jobs which pick up that version of pip will likely fail to install their dependencies.<o:p></o:p></p>
<p class="MsoNormal">Docker image jobs that are using loci (which uses pip) have also been observed to fail.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I don’t know what the fix is, I assume many python users in many projects will be impacted.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If you see an error with a signature like this, you’ve hit the problem<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D">Exception:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D">Traceback (most recent call last):<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D"> File "/var/lib/openstack/lib/python2.7/site-packages/pip/_internal/cli/base_command.py", line 176, in main<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D"> status = self.run(options, args)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D"> File "/var/lib/openstack/lib/python2.7/site-packages/pip/_internal/commands/install.py", line 346, in run<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D"> session=session, autobuilding=True<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D"> File "/var/lib/openstack/lib/python2.7/site-packages/pip/_internal/wheel.py", line 848, in build<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D"> assert building_is_possible<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D">AssertionError<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Al<o:p></o:p></p>
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