[openstack-dev] [all] pip 8 no longer over-installs system packages [was: Gate failure]

Andreas Jaeger aj at suse.com
Wed Jan 20 07:21:06 UTC 2016

Now docs, pep8, and python27 are broken as well here:


On 2016-01-20 06:14, Ian Wienand wrote:
> On 01/20/2016 12:53 PM, Robert Collins wrote:
>> I suspect we'll see fallout in unit tests too, once new images are
>> built.
> If the images can build ...
> This was marked as deprecated, I understand, but the removal is very
> unfortunate [1] considering it's really just a
> shoot-yourself-in-the-foot operation.
> From the latest runs, on ubuntu we are using pip to over-install
> system packages of
>  six
>  requests
>  netaddr
>  PyOpenSSL
>  jsonpointer
>  urllib3
>  pyOpenSSL
> On CentOS it is
>  requests
>  enum34
>  ipaddress
>  numpy
> The problem is that we can't remove these system packages with the
> package-manager from the base images, because other packages we need
> rely on having them installed.  Just removing the directory as pip
> used to do has been enough to keep things going.
> So, what to do?  We can't stay at pip < 8 forever, because I'm sure
> there will be some pip problem we need to patch soon enough.
> Presume we can't remove the system python-* packages for these tools
> because other bits of the system rely on it.  We've been down the path
> of creating dummy packages before, I think ... that never got very
> far.
> I really don't know how with the world of devstack plugins we'd deploy
> a strict global virtualenv.  Heaven knows what "creative" things
> plugins are going to come up with if someone hits this (not that I've
> proposed anything elegant)...
> Would pip accept maybe a environment flag to restore the old ability
> to remove based on the egg-info?  Is it really so bad given what
> devstack is doing?
> -i
> [1]
> https://github.com/pypa/pip/commit/6afc718307fea36b9ffddd376c1395ee1061795c
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