python-holidays fails to build with Python 3.10.0a3.

=================================== FAILURES ===================================
_______________________ TestIsrael.test_independence_day _______________________

self = <tests.TestIsrael testMethod=test_independence_day>

    def test_independence_day(self):
>       self._test_observed_holidays('Independence Day')

tests.py:6119: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
tests.py:6125: in _test_observed_holidays
    il_holidays = holidays.IL(years=[2017], observed=True)
holidays/countries/israel.py:25: in __init__
    HolidayBase.__init__(self, **kwargs)
holidays/holiday_base.py:34: in __init__
    self._populate(year)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = {}, year = 2017

    def _populate(self, year):
        is_leap_year = hebrew.leap(year + hebrew.HEBREW_YEAR_OFFSET)
    
        # Passover
        name = "Passover I"
>       year, month, day = hebrew.to_jd_gregorianyear(year, hebrew.NISAN, 14)
E       TypeError: cannot unpack non-iterable float object

holidays/countries/israel.py:32: TypeError
_________________________ TestIsrael.test_memorial_day _________________________

self = <tests.TestIsrael testMethod=test_memorial_day>

    def test_memorial_day(self):
>       self._test_observed_holidays('Memorial Day')

tests.py:6116: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
tests.py:6125: in _test_observed_holidays
    il_holidays = holidays.IL(years=[2017], observed=True)
holidays/countries/israel.py:25: in __init__
    HolidayBase.__init__(self, **kwargs)
holidays/holiday_base.py:34: in __init__
    self._populate(year)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = {}, year = 2017

    def _populate(self, year):
        is_leap_year = hebrew.leap(year + hebrew.HEBREW_YEAR_OFFSET)
    
        # Passover
        name = "Passover I"
>       year, month, day = hebrew.to_jd_gregorianyear(year, hebrew.NISAN, 14)
E       TypeError: cannot unpack non-iterable float object

holidays/countries/israel.py:32: TypeError
=============================== warnings summary ===============================
tests.py: 24 warnings
  /builddir/build/BUILD/python-holidays-0.10.4/holidays/utils.py: Islamic Holidays estimated using 'convertdate' package.

tests.py: 24 warnings
  /builddir/build/BUILD/python-holidays-0.10.4/holidays/utils.py: For higher precision, install 'hijri-converter' package: pip install -U hijri-converter

tests.py: 24 warnings
  /builddir/build/BUILD/python-holidays-0.10.4/holidays/utils.py: (see https://hijri-converter.readthedocs.io/ )

-- Docs: https://docs.pytest.org/en/stable/warnings.html
=========================== short test summary info ============================
FAILED tests.py::TestIsrael::test_independence_day - TypeError: cannot unpack...
FAILED tests.py::TestIsrael::test_memorial_day - TypeError: cannot unpack non...
================= 2 failed, 572 passed, 72 warnings in 36.68s ==================

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.10/fedora-rawhide-x86_64/01826883-python-holidays/

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

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.