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Hi Thierry,

Thanks for your advice. I submitted a patch [1] to downgrade docker-py to 1.7.2. In long term, we will negotiate with upstream maintainers to resolve the module conflicting issue.

[1] https://review.openstack.org/#/c/304296/

Best regards,
Hongbin

> -----Original Message-----
> From: Thierry Carrez [mailto:thierry at openstack.org]
> Sent: April-11-16 5:28 AM
> To: openstack-dev at lists.openstack.org
> Subject: Re: [openstack-dev] [magnum][requirements][release] The
> introduction of package py2-ipaddress
> 
> Hongbin Lu wrote:
> > Hi requirements team,
> >
> > In short, the recently introduced package py2-ipaddress [1] seems to
> > break Magnum. In details, Magnum gate recently broke by an error:
> > "'\xac\x18\x05\x07' does not appear to be an IPv4 or IPv6 address" [2]
> > (the gate breakage has been temporarily fixed but we are looking for
> a
> > permanent fix [3]). After investigation, I opened a ticket in
> > Cryptography for help [4]. According to the feedback from
> Cryptography
> > community, the problem is from py2-address, which was introduced to
> > OpenStack recently [1].
> >
> > I wonder if we can get any advice from requirements team in this
> > regards. In particular, what is the proper way to handle the
> > problematic package?
> >
> > [1] https://review.openstack.org/#/c/302539/
> > [2] https://bugs.launchpad.net/magnum/+bug/1568212
> > [3] https://bugs.launchpad.net/magnum/+bug/1568427
> > [4] https://github.com/pyca/cryptography/issues/2870
> 
> py2-ipaddress was introduced as a dependency by docker-py 1.8.0.
> Short-term solution would be to cap <1.8.0 in global-requirements
> (which will make us fallback to 1.7.2 and remove py2-ipaddress).
> 
> If the two modules are conflicting we should determine which one is the
> best and converge to it. ipaddress seems a lot more used and pulled by
> a lot of packages. So long-term solution would be to make docker-py
> upstream depend on ipaddress instead...
> 
> --
> Thierry Carrez (ttx)
> 
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