title: python and PEP 440 - how serious is this warning about PEP440?
body: <p>I had to install OpenStack using devstack infrastructure for experiements with open vSwitch, and found this in the logs:</p>
  <pre><code>/usr/lib/python2.7/site-packages/setuptools/dist.py:298: UserWarning: The version specified ('2014.2.2.dev5.gb329598') is an invalid version, this may not work as expected with newer versions of setuptools, pip, and PyPI. Please see PEP 440 for more details.
  </code></pre>
  <p>I googled and found <a href="https://peps.python.org/pep-0440/" rel="nofollow noreferrer">PEP440</a>, but I wonder how serious is this warning?</p>