On Fri, 2013-07-19 at 10:17 +0100, Daniel P. Berrange wrote:
> On Fri, Jul 19, 2013 at 08:20:02AM +0200, Marcela Mašláňová wrote:
> > On 07/19/2013 05:44 AM, Toshio Kuratomi wrote:
> > >
> > >On Jul 18, 2013 5:42 PM, "Michael Catanzaro" <mike.catanz...@gmail.com
> > ><mailto:mike.catanz...@gmail.com>> wrote:
> > > >
> > > > On Thu, 2013-07-18 at 09:53 -0700, Toshio Kuratomi wrote:
> > > > > /usr/bin/python should refer to python2 --
> > > > > http://www.python.org/dev/peps/pep-0394/ I'd be -1 to changing this
> > > > But when python2 is no longer installed by default, surely you want to
> > > > get a python prompt when you type 'python'?
> > >
> > >Yes, and for a long time, I'm going to want to get a python2 prompt.
> > >Which means installing the package for python2, not having python3 start
> > >on that case.
> > >
> > >
> > >
> > Why do you want to use old version as default? That's very
> > conservative approach for Fedora ;-)
>
> This is not just about porting packages that Fedora is shipping. There are
> a quadrillion and one random scripts out in the wild with #!/usr/bin/python
> in them, that only work with python2. If Fedora makes /usr/bin/python be a
> python3 interpretor, we'll break pretty much all of them. I don't think we
> want to be doing that for a very long time yet, if ever.
>
> Far better to encourage people to explicitly use /usr/bin/python2 and
> /usr/bin/python3 explicitly and discourage any use of plain /usr/bin/python,
> but definitely not change the semantics of the latter.
>
> > Upstream plans to support it until 2015 (maybe little longer).
> > Fedora needs to be prepared for such step, so it's the right time to
> > start working on it.
>
> Given the amount of python2 code out there, I wouldn't be at all surprised
> if someone steps up to maintain python2 beyond the date at which its
> current maintainer ceases work. Of course such maintainence work would
> likely be important bug fixes & security updates only, not feature work.
>
> So while I encourage a Fedora effort to get onto Python3 by default,
> well before 2015, I don't think we should assume that Python2 support
> is definitely going to stop in 2015.
+1 Breaking completely needlessly backwards compatibility this way is
really not a good idea.
--
Tomas Mraz
No matter how far down the wrong road you've gone, turn back.
Turkish proverb
--
devel mailing list
devel@lists.fedoraproject.org
https://admin.fedoraproject.org/mailman/listinfo/devel
