Re: [HEADS UP] python-matplotlib-2.0.0 major update

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On Monday, 03 October 2016 at 10:43, Dan Horák wrote:
> On Thu, 22 Sep 2016 18:10:44 +0200
> Dominik 'Rathann' Mierzejewski <dominik@xxxxxxxxxxxxxx> wrote:
> 
> > On Thursday, 22 September 2016 at 16:55, Dan Horák wrote:
> > > On Thu, 22 Sep 2016 15:41:01 +0200
> > > Dominik 'Rathann' Mierzejewski <dominik@xxxxxxxxxxxxxx> wrote:
> > > 
> > > > Hello,
> > > > I've just pushed (but not built) python-matplotlib-2.0.0b4 to
> > > > rawhide. I'll be attempting to rebuild all the affected packages
> > > > locally to test if they're compatible. In the meantime, feel free
> > > > to git pull and build locally for your own testing.
> > > 
> > > python-matplotlib has been a pain for alternative arches recently,
> > > due failures in the test-suite (in 1.5.x). Is the 2.0 version going
> > > to be better in this regard?
> > 
> > tldr: no, but upstream is aware and working on it.
> > 
> > There are quite a few issues opened on upstream github tracker either
> > by me or by Debian maintainer. The main problem is that upstream
> > checks that rendering output matches their generated images. This
> > changes slightly with different versions of freetype. As a
> > workaround, I reintroduced a certain base tolerance in order not to
> > add specific tolerance value to each failing test (there are ~900
> > failing due to slight rendering differences). Then, there are some
> > arch-specific issues, mainly on ARM.
> 
> Could we disable the test-suite for alternative arches until there is
> proper upstream fix? Quite a number of packages/builds are blocked on
> python-matplotlib currently.

Which arches are we talking about? s390x, ppc64(le)? Anything else?

> For math precision issues -ffp-contract=off often helps. And yes,
> comparing rendered output can be considered fragile, we have already
> met it ...

Where does that parameter go?

Regards,
Dominik
-- 
Fedora http://fedoraproject.org/wiki/User:Rathann
RPMFusion http://rpmfusion.org
"Faith manages."
        -- Delenn to Lennier in Babylon 5:"Confessions and Lamentations"
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