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List:       selinux
Subject:    Re: Userspace Python version
From:       Chris PeBenito <pebenito () ieee ! org>
Date:       2017-09-14 22:40:29
Message-ID: 4d86edac-354f-72b3-bbc7-209838d1d2d4 () ieee ! org
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On 09/13/2017 11:10 PM, Jason Zaman wrote:
> On Sun, Sep 10, 2017 at 08:06:28PM +0200, Nicolas Iooss wrote:
>> On Sat, Sep 9, 2017 at 1:18 AM, Chris PeBenito <pebenito@ieee.org> wrote:
>>> I believe that all major SELinux distributions have at least Python 3.4
>>> support.  Python 3 changeover has gone so long that even 3.3 is about to go
>>> end-of-life [1].  Can we officially drop Python 2.7 support in userspace
>>> code?
>>>
>>> I'd like to drop support for everything older than Python 3.4 in SETools.
>>>
>>> [1]
>>> http://blog.python.org/2017/09/python-337rc1-is-now-available-prior-to.html
>>
>> When I updated the Arch Linux packages for the last release, I tried
>> to use Python 3 everywhere and there was one component which required
>> Python 2: selinux-gui [1], because PyGtk is not compatible with Python
>> 3. After a quick search I found https://askubuntu.com/a/97107 : "PyGTK
>> has been deprecated in favor of PyGI+GTK. Because of that, a version
>> of PyGTK for Python 3 was never written."
>>
>> I will try to port selinux-gui to PyGI [2] in order to reduce the
>> dependency towards Python 2. Before I start this work, are there
>> already other people working on this? More precisely there have been
>> some patches/commits related to this, like 9a57996dfa9a ("sandbox: Use
>> GObject introspection binding instead of pygtk2") and 917f398d7cd2
>> ("policycoreutils: Use GObject introspection binding instead of
>> python-gobject in selinux_server.py") and I am wondering whether their
>> authors also looked at selinux-gui (and command
>> system-config-selinux).
>>
>> Cheers,
>> Nicolas
>>
>> [1] directory gui/ of https://github.com/SELinuxProject/selinux
>> [2] with ideas from
>> https://wiki.gnome.org/action/show/Projects/PyGObject/IntrospectionPorting
> 
> This sounds about right. I know for sure all the commandline and
> important selinux stuff all works with python3. I dont really use
> selinux-gui. I didnt port it over when i did the big 2to3 patches since
> I dont really know gtk. I think some of the redhat guys did some fixes
> for it but not sure how comprehensive.
> 
> I have a mild preference for porting that to py3 before dropping it but
> I havent heard any issues on the gentoo side about py3 support since the
> last release so its probably fine.
> 
> Can the one that drops py2 be version 4.2? then if there do happen to be
> any small bugfixes they can continue on 4.1.x?

That was my plan, as I want to use a few py3-specific features finally.

-- 
Chris PeBenito

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