Re: dropping python2 [was Re: scientific python stack transitions]
On Sunday, July 7, 2019 6:13:45 PM EDT Thomas Goirand wrote:
> On 7/7/19 5:31 PM, Matthias Klose wrote:
> > On 07.07.19 16:55, Drew Parsons wrote:
> >> On 2019-07-07 22:46, Mo Zhou wrote:
> >>> Hi science team,
> >>>
> >>> By the way, when do we start dropping python2 support?
> >>> The upstreams of the whole python scientific computing
> >>> stack had already started dropping it.
> >>
> >> Good question. I think it is on the agenda this cycle, but debian-python
> >> will have the call on it.
> >
> > you can start dropping it now, however please don't drop anything yet with
> > reverse dependencies. So leaf packages first.
> >
> > Matthias
>
> I'm sorry, but I think I need to contest this. Doing things in order,
> first leaf, then go all the way back, will take too long, and this is
> IMO unnecessary effort. Older binary packages will anyway stay in the
> archive as long as they are needed, and no FTP hint is added (please
> correct me if I'm wrong here... but that's what I saw in the past).
>
> Also, those who aren't doing the work of switching to Py2 will need to
> be kicked away anyway.
>
> You've done some pretty destructive transitions yourself for other
> stuff, so why should we bother on this simple case?
>
> Last, a 2 years cycle to get rid of all traces of Python 2 *will* take
> some time, maybe more than we can even think of, so we'd better take
> some shortcuts if we can.
Are you 100% certain that there isn't some small subset of python2 packages we
will end up needing for bullseye? If not, this is not a good suggestion.
Scott K
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