python-googleapis-common-protos fails to build with Python 3.14.0a4.

=================================== FAILURES ===================================
______________________________ test_error_reason _______________________________

    def test_error_reason():
>       from google.api import error_reason_pb2

tests/unit/test_google_api_error_reason.py:18: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../BUILDROOT/usr/lib/python3.14/site-packages/google/api/error_reason_pb2.py:21: in <module>
    from google.protobuf import descriptor as _descriptor
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

    # Protocol Buffers - Google's data interchange format
    # Copyright 2008 Google Inc.  All rights reserved.
    # https://developers.google.com/protocol-buffers/
    #
    # Redistribution and use in source and binary forms, with or without
    # modification, are permitted provided that the following conditions are
    # met:
    #
    #     * Redistributions of source code must retain the above copyright
    # notice, this list of conditions and the following disclaimer.
    #     * Redistributions in binary form must reproduce the above
    # copyright notice, this list of conditions and the following disclaimer
    # in the documentation and/or other materials provided with the
    # distribution.
    #     * Neither the name of Google Inc. nor the names of its
    # contributors may be used to endorse or promote products derived from
    # this software without specific prior written permission.
    #
    # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    
    """Descriptors essentially contain exactly the information found in a .proto
    file, in types that make this information accessible in Python.
    """
    
    __author__ = 'robinson (Will Robinson)'
    
    import threading
    import warnings
    
    from google.protobuf.internal import api_implementation
    
    _USE_C_DESCRIPTORS = False
    if api_implementation.Type() == 'cpp':
      # Used by MakeDescriptor in cpp mode
      import binascii
      import os
>     from google.protobuf.pyext import _message
E     TypeError: Metaclasses with custom tp_new are not supported.


https://docs.python.org/3.14/whatsnew/3.14.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.14/fedora-rawhide-x86_64/08584155-python-googleapis-common-protos/

For all our attempts to build python-googleapis-common-protos with Python 3.14, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.14/package/python-googleapis-common-protos/

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 3.14:
https://copr.fedorainfracloud.org/coprs/g/python/python3.14/

Let us know here if you have any questions.

Python 3.14 is planned to be included in Fedora 43.
To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.14.
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.