In case that helps with the decision making process:
Debian 5.0 (lenny - no longer supported): py 2.5
Debian 6.0 (squeeze - current oldoldstable): py2.6
Debian 7.0/8.0/9.0 (wheezy/jessie/stretch - currently
oldstable/stable/testing): py2.7
So even this very conservative Linux distribution is supporting py2.7
for the past two years (and with the backporting branch I assume even
squeeze supports 2.7 which would make it a supported platform for the
pat 4 years on that distribution).
Source:
https://packages.debian.org/search?keywords=python&searchon=names&suite=all§ion=all
On 23.07.2015 17:01, Bert Huijben wrote:
I like this proposal... but I'm wondering in what case Linux build
environments need python. Those very old enterprise versions are
unlikely to have python 2.7 or newer.
When building from a tarball, you only need Python to run the test suite.
There are certain edge cases in the Python syntax where it's almost
impossible to be compatible with both 2.5/2.6 and 3.x. Because of
that, and because 2.6 is no longer supporter by the Python devs, it
makes sense to stop supporting those versions in 1.9/trunk.
Those very old enterprise versions will just have to be upgraded, IMO.
------------------------------------------------------------------------
From: Branko Čibej <mailto:br...@wandisco.com>
Sent: 23-7-2015 11:02
To: dev@subversion.apache.org <mailto:dev@subversion.apache.org>
Subject: Re: 1.9.0 minimal Python version
On 23.07.2015 10:30, Stefan Hett wrote:
> Hi,
>
>>>> - For 1.9, it's a little late to make any changes, but I would
>>>> consider
>>>> dropping py2.5 support (and converting to the 'except' 'as'
>>>> syntax),
>>>> since for 1.9 py3 support is more important than py2.5 support.
>>>>
>>>> Thoughts?
>> I'd rather not mess with the 1.9 branch at this point ... we're so
close
>> to the release (I hope).
>>
>> -- Brane
> as a thought for the 1.9 case:
> In case you do not want to drop py2.5 support for 1.9 because it's
> released stating that minimum support already, would it be an option
> to still support py3 in a following patch (1.9.1)? For instance by
> providing py-script versions for older as well as later versions?
>
> Reasoning would be that given that SVN-versions have a lifetime of
> roughly 2 years before the successive version is released it'd be
> quite a limitation if that'd only work with a very old python
version...
>
> As an alternative approach: You'd also consider mentioning a minimum
> requirement of python 2.6 just in the docs (no code changes yet) and
> then release 1.9.1 with the actual "fixes". So technically then even
> post release you would not change the minimal system requirements.
>
> (just some thoughts from a user's point of view, if that input would
> be of any benefit)
Daniel and I have just been chatting about this on IRC, and we agreed
that it makes sense to just drop 2.5/2.6 support for 1.9 and trunk; the
proposal is that we declare support for 2.7, and at some point make
1.9.x and trunk compatible with both 2.7 and 3.x.
-- Brane
