Bug 1904346

python-photutils fails to build with Python 3.10.0a2.

=================================== FAILURES ===================================
_____________________ TestDeblendSources.test_nondetection _____________________

self = <photutils.segmentation.tests.test_deblend.TestDeblendSources object at 0x7fa085a8b430>

    def test_nondetection(self):
        """
        Test for case where no sources are detected at one of the
        threshold levels.
    
        For this case, a `NoDetectionsWarning` should not be raised when
        deblending sources.
        """
    
        data = np.copy(self.data3)
        data[50, 50] = 1000.
        data[50, 70] = 500.
        self.segm = detect_sources(data, self.threshold, self.npixels)
    
        with catch_warnings(NoDetectionsWarning) as warning_lines:
            deblend_sources(data, self.segm, self.npixels)
>           assert len(warning_lines) == 0
E           assert 1 == 0
E             +1
E             -0

photutils/segmentation/tests/test_deblend.py:280: AssertionError

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.10/fedora-rawhide-x86_64/01811206-python-photutils/

For all our attempts to build python-photutils with Python 3.10, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.10/package/python-photutils/

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 3.10:
https://copr.fedorainfracloud.org/coprs/g/python/python3.10/

Let us know here if you have any questions.

Python 3.10 will be included in Fedora 35. To make that update smoother, we're building Fedora packages with early pre-releases of Python 3.10.
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.