Bug 1801243

Summary:	python-mplcairo fails to build with Python 3.9: images not close (RMS 0.010)
Product:	[Fedora] Fedora	Reporter:	Miro Hrončok <mhroncok>
Component:	python-mplcairo	Assignee:	Elliott Sales de Andrade <quantum.analyst>
Status:	CLOSED RAWHIDE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	cstratak, mhroncok, python-sig, quantum.analyst
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	python-matplotlib-3.2.0-1.fc33	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-03-06 09:50:16 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:	1801581
Bug Blocks:	1785415

Description Miro Hrončok 2020-02-10 13:55:02 UTC

python-mplcairo fails to build with Python 3.9.0a3.

E           matplotlib.testing.exceptions.ImageComparisonFailure: images not close (RMS 0.010):
E           	result_images/test_mathtext/mathtext_cm_20.png
E           	result_images/test_mathtext/mathtext_cm_20-expected.png
/usr/lib64/python3.9/site-packages/matplotlib/testing/decorators.py:146: ImageComparisonFailure

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.9/fedora-rawhide-x86_64/01232746-python-mplcairo/

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

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 Ben Cotton 2020-02-11 16:33:46 UTC

This bug appears to have been reported against 'rawhide' during the Fedora 32 development cycle.
Changing version to 32.

Comment 2 Elliott Sales de Andrade 2020-02-14 09:21:10 UTC

Test images come from Matplotlib, so this'll be fixed when it's updated.

Comment 3 Elliott Sales de Andrade 2020-03-06 00:15:56 UTC

Should try again with Matplotlib 3.2.0.

Comment 4 Miro Hrončok 2020-03-06 09:50:16 UTC

Yes! Thank you.