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Re: Investigating the reverse dependencies of python-monotonic.

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Once python3-m2crypto is in Debian, I will port oz to python3.

/Simon

> 13 aug. 2019 kl. 21:46 skrev Thomas Goirand <zigo@debian.org>:
> 
>> On 8/13/19 12:38 PM, peter green wrote:
>> Hi
>> 
>> I've been looking at various python 2 cruft packages (packages no longer
>> built by the corresponding source packages) and why they can't be
>> cleaned up, I have been looking in a derivative but many of my results
>> are also relevant to debian proper. Where relevant I have been filing
>> bugs against the reverse-dependencies of these cruft packages, so they
>> can be fixed or ultimately removed.
>> 
>> Most such packages have been part of upstream projects that have dropped
>> python 2 support, notablly django and openstack. In such cases it is
>> pretty clear that the only reasonable way forward is for the reverse
>> dependencies to be either removed or migrated to python 3.
>> 
>> One package that stood out from the rest was python-monotonic.
>> python-monotonic is maintained by the Debian openstack team, but it
>> doesn't seem to be in any way openstack specific, nor does upstream seem
>> to have dropped python2 support. It seemed to have a fair few reverse
>> dependencies.
>> 
>> python-humanfriendly (has rdeps)
>> oz (rc bug filed https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=933509 )
>> python-fasteners (has rdeps)
>> python-futurist (has rdeps, cruft)
>> python-octaviaclient (assumed to be openstack related)
>> python-oslo.log (assumed to be openstack related)
>> python-oslo.messaging (assumed to be openstack related)
>> python-oslo.service (assumed to be openstack related)
>> python-oslo.utils (assumed to be openstack related)
>> python-tenacity (has rdeps, cruft)
>> 
>> There are also indirect reverse dependencies, (i'm not investigating
>> reverse dependencies of packages that are clearly openstack specific here)
>> 
>> python-coloredlogs (via python-humanfriendly, no reverse dependencies)
>> python-datalad (via python-fasteners, no reverse dependencies)
>> duplicity (via python-fasteners)
>> python-oauth2client (via python-fasteners)
>> python-oslo.concurrency (via python-fastners, openstack related)
>> python-taskflow (via python-fasteners, cruft)
>> python-tooz (via python-fasteners, openstack related, cruft)
>> python-googleapi (via python-oauth2client)
>> python-pypowervm (via python-taskflow, openstack related, cruft)
>> python-googleapi-samples (via python-googleapi)
>> python-etcd3gw (no rdeps)
>> python-gnocchiclient (openstack related, cruft)
>> 
>> If we ignore openstack stuff, python modules and an examples package the
>> two main packages left seem to be oz and duplicity, oz seems to have
>> very low popcon, but duplicity seems to have a popcon of around 3000 and
>> growing.
>> 
>> So the main question seems to be can duplicity be reasonably migrated to
>> python 3 and if not is it worth reinstating the python-monotonic binary
>> package to save duplicity?
> 
> What happened is that I simply uploaded the latest version of OpenStack
> from Experimental to Sid. This includes monotonic. It's been a long time
> I maintain monotonic because it's used in OpenStack, then other packages
> started using it. You may have noticed that it was in Experimental with
> Python 2 removed for at least 6 months, just like for Django, giving the
> sign that Py2 would soon go away. However, maybe bugs should have been
> filled, sorry that I didn't do it in time.
> 
> Let's take a look at the situation.
> 
> As per Andrey's reply, we can fix duplicity.
> 
> From your report above, if I remove all the OpenStack stuff (which at
> this time, should all be only Python 3), the only affected packages
> would be:
> 
>> python-humanfriendly (has rdeps)
>> oz (rc bug filed #933509)
>> python-coloredlogs (via python-humanfriendly, no reverse dependencies)
>> python-datalad (via python-fasteners, no reverse dependencies)
>> duplicity (via python-fasteners)
>> python-oauth2client (via python-fasteners)
>> python-googleapi-samples (via python-googleapi)
> 
> According to the setup.py of python-googleapi in the Github repo, latest
> upstream version supports Python 3, so it should be doable to upload a
> new version to fix this.
> 
> I will remove Python 2 suport from python-oauth2client and
> python-fasteners tomorrow.
> 
> So, this leaves us only: humanfriendly, oz, python-coloredlogs,
> python-datalad. I've uploaded humanfriendly and coloredlogs Py2 removal.
> BTW, I believe python-coloredlogs was there as a build-depends of
> cyvcf2, which has been fixed on the 1st of august by Andreas Tille.
> 
> By all means, let's not play the dance of re-introducting Python 2 when
> we can move forward on the right direction.
> 
> Thanks for taking the time to investigate this, this is very useful, and
> I have to admit that, even though I know how to do the work, I am a bit
> lost into knowing from were to begin. The release tracker is not very
> helpful in this regard.
> 
> Cheers,
> 
> Thomas Goirand (zigo)

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Thread

Investigating the reverse dependencies of python-monotonic. peter green <plugwash@p10link.net> - 2019-08-13 12:50 +0200
  Re: Investigating the reverse dependencies of python-monotonic. Andrey Rahmatullin <wrar@debian.org> - 2019-08-13 13:00 +0200
    Bug#934333: Investigating the reverse dependencies of python-monotonic. peter green <plugwash@p10link.net> - 2019-08-13 15:40 +0200
  Re: Investigating the reverse dependencies of python-monotonic. Simon Josefsson <simon@josefsson.org> - 2019-08-13 22:40 +0200
    Re: Investigating the reverse dependencies of python-monotonic. Simon Josefsson <simon@josefsson.org> - 2019-08-15 15:20 +0200

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