python-sphinxcontrib-bibtex fails to build with Python 3.11.0a4.

==================================== ERRORS ====================================
____________________ ERROR collecting test/test_citation.py ____________________
test/test_citation.py:5: in <module>
    import sphinxcontrib.bibtex.plugin
../../BUILDROOT/python-sphinxcontrib-bibtex-2.4.1-2.fc36.x86_64/usr/lib/python3.11/site-packages/sphinxcontrib/bibtex/__init__.py:9: in <module>
    from .domain import BibtexDomain
../../BUILDROOT/python-sphinxcontrib-bibtex-2.4.1-2.fc36.x86_64/usr/lib/python3.11/site-packages/sphinxcontrib/bibtex/domain.py:44: in <module>
    from .style.referencing import (
../../BUILDROOT/python-sphinxcontrib-bibtex-2.4.1-2.fc36.x86_64/usr/lib/python3.11/site-packages/sphinxcontrib/bibtex/style/referencing/__init__.py:121: in <module>
    ???
/usr/lib64/python3.11/dataclasses.py:1187: in dataclass
    return wrap(cls)
/usr/lib64/python3.11/dataclasses.py:1178: in wrap
    return _process_class(cls, init, repr, eq, order, unsafe_hash,
/usr/lib64/python3.11/dataclasses.py:958: in _process_class
    cls_fields.append(_get_field(cls, name, type, kw_only))
/usr/lib64/python3.11/dataclasses.py:815: in _get_field
    raise ValueError(f'mutable default {type(f.default)} for field '
E   ValueError: mutable default <class 'pybtex.richtext.Text'> for field other is not allowed: use default_factory
____________________ ERROR collecting test/test_footcite.py ____________________
test/test_footcite.py:6: in <module>
    from sphinxcontrib.bibtex.style.referencing import BracketStyle, PersonStyle
../../BUILDROOT/python-sphinxcontrib-bibtex-2.4.1-2.fc36.x86_64/usr/lib/python3.11/site-packages/sphinxcontrib/bibtex/style/referencing/__init__.py:121: in <module>
    ???
/usr/lib64/python3.11/dataclasses.py:1187: in dataclass
    return wrap(cls)
/usr/lib64/python3.11/dataclasses.py:1178: in wrap
    return _process_class(cls, init, repr, eq, order, unsafe_hash,
/usr/lib64/python3.11/dataclasses.py:958: in _process_class
    cls_fields.append(_get_field(cls, name, type, kw_only))
/usr/lib64/python3.11/dataclasses.py:815: in _get_field
    raise ValueError(f'mutable default {type(f.default)} for field '
E   ValueError: mutable default <class 'pybtex.richtext.Text'> for field other is not allowed: use default_factory
_____________________ ERROR collecting test/test_style.py ______________________
test/test_style.py:8: in <module>
    from sphinxcontrib.bibtex.style.referencing import (
../../BUILDROOT/python-sphinxcontrib-bibtex-2.4.1-2.fc36.x86_64/usr/lib/python3.11/site-packages/sphinxcontrib/bibtex/style/referencing/__init__.py:121: in <module>
    ???
/usr/lib64/python3.11/dataclasses.py:1187: in dataclass
    return wrap(cls)
/usr/lib64/python3.11/dataclasses.py:1178: in wrap
    return _process_class(cls, init, repr, eq, order, unsafe_hash,
/usr/lib64/python3.11/dataclasses.py:958: in _process_class
    cls_fields.append(_get_field(cls, name, type, kw_only))
/usr/lib64/python3.11/dataclasses.py:815: in _get_field
    raise ValueError(f'mutable default {type(f.default)} for field '
E   ValueError: mutable default <class 'pybtex.richtext.Text'> for field other is not allowed: use default_factory
____________________ ERROR collecting test/test_template.py ____________________
test/test_template.py:1: in <module>
    from sphinxcontrib.bibtex.style.referencing import join, sentence
../../BUILDROOT/python-sphinxcontrib-bibtex-2.4.1-2.fc36.x86_64/usr/lib/python3.11/site-packages/sphinxcontrib/bibtex/style/referencing/__init__.py:121: in <module>
    ???
/usr/lib64/python3.11/dataclasses.py:1187: in dataclass
    return wrap(cls)
/usr/lib64/python3.11/dataclasses.py:1178: in wrap
    return _process_class(cls, init, repr, eq, order, unsafe_hash,
/usr/lib64/python3.11/dataclasses.py:958: in _process_class
    cls_fields.append(_get_field(cls, name, type, kw_only))
/usr/lib64/python3.11/dataclasses.py:815: in _get_field
    raise ValueError(f'mutable default {type(f.default)} for field '
E   ValueError: mutable default <class 'pybtex.richtext.Text'> for field other is not allowed: use default_factory
=========================== short test summary info ============================
ERROR test/test_citation.py - ValueError: mutable default <class 'pybtex.rich...
ERROR test/test_footcite.py - ValueError: mutable default <class 'pybtex.rich...
ERROR test/test_style.py - ValueError: mutable default <class 'pybtex.richtex...
ERROR test/test_template.py - ValueError: mutable default <class 'pybtex.rich...
!!!!!!!!!!!!!!!!!!! Interrupted: 4 errors during collection !!!!!!!!!!!!!!!!!!!!
============================== 4 errors in 0.43s ===============================

https://docs.python.org/3.11/whatsnew/3.11.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.11/fedora-rawhide-x86_64/03272610-python-sphinxcontrib-bibtex/

For all our attempts to build python-sphinxcontrib-bibtex with Python 3.11, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.11/package/python-sphinxcontrib-bibtex/

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 3.11:
https://copr.fedorainfracloud.org/coprs/g/python/python3.11/

Let us know here if you have any questions.

Python 3.11 is planned to be included in Fedora 37. To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.11.
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.