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Bug 1838207

Summary:	python-matplotlib fails to build with numpy 1.19.x
Product:	[Fedora] Fedora	Reporter:	Miro Hrončok <mhroncok>
Component:	python-matplotlib	Assignee:	Elliott Sales de Andrade <quantum.analyst>
Status:	CLOSED RAWHIDE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	cstratak, dominik, gwync, jonathan.underwood, mhroncok, mplch, paulo.cesar.pereira.de.andrade, python-sig, quantum.analyst, thibault.north, tomspur
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	python-matplotlib-3.3.0-0.1.rc1.fc33	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-06-30 05:42:25 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1848152
Bug Blocks:	1803234, 1509657, 1838442

Description Miro Hrončok 2020-05-20 16:07:50 UTC

python-matplotlib fails to build with Python 3.9.0b1.

We have built numpy 1.19.0rc1 from dist git. This built hasn't happened yet in Fedora rawhide, but eventually will. Seems like matplotlib fails with a lot of tests because of a new deprecation warning:

numpy.VisibleDeprecationWarning: Creating an ndarray from ragged nested sequences (which is a list-or-tuple of lists-or-tuples-or ndarrays with different lengths or shapes) is deprecated. If you meant to do this, you must specify 'dtype=object' when creating the ndarray


For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.9/fedora-rawhide-x86_64/01399175-python-matplotlib/

For all our attempts to build python-matplotlib with Python 3.9, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.9/package/python-matplotlib/

Testing and mass rebuild of packages is happening in copr. You can follow these instructions to test locally in mock if your package builds with Python 3.9:
https://copr.fedorainfracloud.org/coprs/g/python/python3.9/

Let us know here if you have any questions.

Python 3.9 will be included in Fedora 33. To make that update smoother, we're building Fedora packages with early pre-releases of Python 3.9.
A build failure prevents us from testing all dependent packages (transitive [Build]Requires), so if this package is required a lot, it's important for us to get it fixed soon.
We'd appreciate help from the people who know this package best, but if you don't want to work on this now, let us know so we can try to work around it on our side.

Comment 1 Miro Hrončok 2020-05-20 16:09:36 UTC

Setting the severity to high, because we'd like to proceed with Koji side tag rebuilds really soon.

I think we shall report this to upstream and than make the tests not fail on this.

Comment 2 Elliott Sales de Andrade 2020-05-20 19:47:40 UTC

This is already known upstream.

Comment 3 Miro Hrončok 2020-05-20 19:58:04 UTC

Thanks Elliott. Do we need that PR backported, or is filtering the warnings good for now?

Comment 4 Miro Hrončok 2020-05-21 11:59:39 UTC

numpy 1.19 was temporarily reverted, but I'm keeping this open for future reference

Comment 5 Miro Hrončok 2020-06-02 10:29:17 UTC

numpy 1.19 is back in.

Comment 6 Elliott Sales de Andrade 2020-06-04 07:37:18 UTC

There should be an rc out by next week.