On 10/21/2017 07:14 AM, Clark Boylan wrote:
The current issue this change is facing can be seen at
http://logs.openstack.org/25/513825/4/check/legacy-tempest-dsvm-py35/c31deb2/logs/devstacklog.txt.gz#_2017-10-20_20_07_54_838.
The tl;dr is that for distutils installed packages (basically all the
distro installed python packges) pip refuses to uninstall them in order
to perform upgrades because it can't reliably determine where all the
files are. I think this is a new pip 10 behavior.
In the general case I think this means we can not rely on global pip
installs anymore. This may be a good thing to bring up with upstream
PyPA as I expect it will break a lot of people in a lot of places (it
will break infra for example too).
deja-vu! pip 8 tried this and quickly reverted. I wrote a long email
with all the details, but then figured that's not going to help much
so translated it into [1].
-i
[1] https://github.com/pypa/pip/issues/4805
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