[Piglit] Convert from python2 to python3

[Dylan Baker]

On Wednesday, February 26, 2014 10:23:31 Dave Airlie wrote:
> On Wed, Feb 26, 2014 at 6:36 AM, Dylan Baker 
<baker.dylan.c at gmail.com> wrote:
> > On Tuesday, February 25, 2014 02:01:56 PM Ken Phillis Jr wrote:
> >> On Mon, Feb 24, 2014 at 9:10 PM, Matt Turner 
<mattst88 at gmail.com> wrote:
> >> > On Mon, Feb 24, 2014 at 11:47 AM, Ilia Mirkin 
<imirkin at alum.mit.edu>
> > 
> > wrote:
> >> >> On Mon, Feb 24, 2014 at 2:42 PM, Dylan Baker 
<baker.dylan.c at gmail.com>
> > 
> > wrote:
> >> >>> This series makes the transition from python2 to python3. In 
general
> >> >> 
> >> >> Out of curiousity, what's the motivation for this? I've been able to
> >> >> avoid python3 quite nicely thus far, all it seems to do is break
> >> >> compatibility with existing setups... Admittedly piglit is targeted 
at
> >> >> developers, who probably have the latest and greatest stuff, so
> >> >> perhaps not a huge issue.
> >> > 
> >> > Python 2.7 support sucks. Piglit with concurrency was simply 
broken
> >> > with Python 2.7.4 and 2.7.5 because of some regression related 
to
> >> > threading. Then piglit was broken again after the timeouts code 
was
> >> > committed in November, until it was reverted, as far as we can tell
> >> > because of a Python bug. And Python 3.3 just has the necessary 
support
> >> > for doing this without rolling it ourselves.
> >> > 
> >> > Basically, we're tired of relying on old and dead versions of python
> >> > which are ill maintained and break often.
> >> 
> >> I agree with the forced update to Python 3, but I would suggest 
making
> >> some tweaks to keep this working on a lot of the long-term desktop
> >> environments because it is better to have a stable software base 
when
> >> writing tests and improving the actual driver.
> >> 
> >> Debian: https://packages.debian.org/wheezy/python3 - The minimum
> >> supported version of the releases is Python3 version 3.1.3
> >> Ubuntu: http://packages.ubuntu.com/lucid/python3 - Minimum 
Python3
> >> version of 3.1.2 ( on Ubuntu 10.04 LTS ), but the current long term
> >> release ( 12.04 LTS ) features python 3.2.3.
> >> Gentoo: This always tends to carry the latest python release so this
> >> probably is not going to be an issue.
> >> FreeBSD: FreeBSD 9 includes python version 3.2.3 ( or similar ) in a
> >> package so this should work out well.
> >> Red Hat based distributions: These appear to only have Python 2.7
> >> based on the package searches I can find. I may be wrong, but it 
would
> >> be a good idea to at least verify this.
> > 
> > on python3<3.2: Python as a project doesn't support python older 
than 3.2,
> > and 3.1 lacks features we're already using (ie: argparse). It would be a
> > step backwards to go to python 3.1.
> > 
> > on python 3<3.3: Python 3.2 has 99% feature parity with 2.7, so while 
it
> > would be a step toward the future, many of the reasons for going to
> > python3 are new features that will be useful or allow us to replace our
> > own hand rolled code with code from the standard library. Thread 
timeouts
> > is the most obvious example. If we need to postpone 3.3 support and 
move
> > to 3.2 that is an option, although IMHO it would be better to just go all
> > the way.
> > 
> > on LTS/stable releases: Piglit is a testing framework for *upstream
> > development* of graphics drivers. You need up-to-date libdrm, linux, 
llvm,
> > etc to even build mesa. I don't know of any developers trying to do
> > upstream development on EL, Debian<testing (jessie has 3.3.4), or
> > Ubuntu<latest (saucy has 3.3.x); though I might be wrong, and they 
can
> > yell at me for making stupid assumptions!, because the point of
> > LTS/Stable releases is that *nothing ever changes*. I think the right
> > solution for LTS/stable releases is to just tag the last 2.6+argparse
> > compatible release, and point people who don't have 3.3 support to 
that
> > tag.
> 
> We do this quite often, RHEL6 is on Mesa 9.2 and we've updated it from
> Mesa 7.11 on a regular schedule,
> 
> and we do run piglit against it, so yes a false assumption.
> 
> Dave.


Sorry Dave, somewhere I'd gotten the impression that you guys did most of 
your work on Fedora, I stand corrected

-Dylan
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/piglit/attachments/20140226/ad131259/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 490 bytes
Desc: This is a digitally signed message part.
URL: <http://lists.freedesktop.org/archives/piglit/attachments/20140226/ad131259/attachment-0001.pgp>