389-ds-base fails to build with Python 3.15.0a3.

    File "cli/dsconf", line 72, in <module>
      cli_backend.create_parser(subparsers)
      ~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
    File "/builddir/build/BUILD/389-ds-base-3.2.0-build/389-ds-base-3.2.0/src/lib389/build/lib/lib389/cli_conf/backend.py", line 895, in create_parser
      subcommands = backend_parser.add_subparsers(help="action")
    File "/usr/lib64/python3.15/argparse.py", line 2019, in add_subparsers
      kwargs['prog'] = formatter.format_help().strip()
                       ~~~~~~~~~~~~~~~~~~~~~^^
    File "/usr/lib64/python3.15/argparse.py", line 305, in format_help
      help = self._root_section.format_help()
    File "/usr/lib64/python3.15/argparse.py", line 230, in format_help
      item_help = join([func(*args) for func, args in self.items])
                        ~~~~^^^^^^^
    File "/builddir/build/BUILD/389-ds-base-3.2.0-build/389-ds-base-3.2.0/src/lib389/build/lib/lib389/cli_base/__init__.py", line 416, in _format_usage
      formatted_options = self._format_actions_usage(parent_arguments, [])
                          ^^^^^^^^^^^^^^^^^^^^^^^^^^
  AttributeError: 'CustomHelpFormatter' object has no attribute '_format_actions_usage'

https://docs.python.org/3.15/whatsnew/3.15.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.15/fedora-rawhide-x86_64/09935186-389-ds-base/

For all our attempts to build 389-ds-base with Python 3.15, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.15/package/389-ds-base/

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 3.15:
https://copr.fedorainfracloud.org/coprs/g/python/python3.15/

Let us know here if you have any questions.

Python 3.15 is planned to be included in Fedora 45.
To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.15.
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.