----- Original Message -----
> From: "Zbigniew Jędrzejewski-Szmek" <[email protected]>
> To: [email protected]
> Sent: Wednesday, June 10, 2015 10:05:41 PM
> Subject: Re: F23 System Wide Change: Python 3 as Default
>
> On Wed, Jun 10, 2015 at 08:50:14AM -0400, Jan Kurik wrote:
> > = Proposed System Wide Change: Python 3 as Default =
> > https://fedoraproject.org/wiki/Changes/Python_3_as_Default
> >
> > Change owner(s):
> > * Slavek Kabrda <bkabrda at redhat dot com>
> > * Matej Stuchlik <mstuchli at redhat dot com>
> > * Miro Hroncok <mhroncok at redhat dot com>
> > * Thomas Spura <tomspur at fedoraproject dot org>
> > * Robert Kuska <rkuska at redhat dot com>
> >
> > Up until now, Fedora has used Python 2 as the default Python
> > implementation. This change proposes switching to Python 3. The details of
> > the term "switching" are explained thoroughly in the Scope section.
> >
> > == Detailed Description ==
> > It is currently mature and stable, since it has been under active
> > development for five years
> More than that, I'm sure.
>
> > == Scope ==
> > The main goal is switching to Python 3 as a default, in which state:
> > * DNF is the default package manager instead of Yum, which only works
> > with Python 2
> Does that mean that dnf-3 is going to become the default which is installed
> as /usr/bin/dnf?
> Will "old" dnf be available as /usr/bin/dnf-2?
Why and how long would you need the "old" DNF? dnf-2 and dnf-3 are functionally
the same.
> > Changes in packaging:
> > * Change definition of default python interpreter to python3.
> What does that mean?
>
> > * Change unversioned python macros to python3 (Possibly do that change
> > in upstream rpm)
> Hm, I think that this will break hundreds of packages... Not everything has
> been updated to use %{__python2} or %{__python3}, and of those that haven't
> been
> updated, many probably are not ready for switching to python3. I think it
> would be better to avoid a flag day, and simply slowly switch packages
> one by one.
>
> > * All applications that use only a single python version MUST use
> > python3 (unless they have a good reason not to do so).
> Do you intend to file bugs for all such packages or notify maintainers
> in some other way?
>
> Zbyszek
>
>
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--
Radek Holý
Associate Software Engineer
Software Management Team
Red Hat Czech
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