broken on python 3.12.8

[peeweep]

% pkgcheck --version
Traceback (most recent call last):
  File "/usr/lib/python-exec/python3.12/pkgcheck", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/usr/lib/python3.12/site-packages/pkgcheck/scripts/__init__.py", line 48, in main
    run(os.path.basename(sys.argv[0]))
  File "/usr/lib/python3.12/site-packages/pkgcheck/scripts/__init__.py", line 40, in run
    sys.exit(tool())
             ^^^^^^
  File "/usr/lib/python3.12/site-packages/snakeoil/cli/tool.py", line 81, in __call__
    ret = self.main()
          ^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/pkgcheck/cli.py", line 20, in main
    return super().main()
           ^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/snakeoil/cli/tool.py", line 191, in main
    self.handle_exec_exception(e)
  File "/usr/lib/python3.12/site-packages/snakeoil/cli/tool.py", line 173, in main
    self.options, func = self.parse_args(
                         ^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/snakeoil/cli/tool.py", line 128, in parse_args
    self.handle_exec_exception(e)
  File "/usr/lib/python3.12/site-packages/snakeoil/cli/tool.py", line 102, in parse_args
    options = self.parser.parse_args(args=args, namespace=namespace)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/snakeoil/cli/arghparse.py", line 1263, in parse_args
    args, unknown_args = self.parse_known_args(args, namespace)
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/snakeoil/cli/arghparse.py", line 1250, in parse_known_args
    namespace, args = self._parse_known_args(args, namespace)
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: ArgumentParser._parse_known_args() missing 1 required positional argument: 'intermixed'

% pquery --version  
Traceback (most recent call last):
  File "/usr/lib/python-exec/python3.12/pquery", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/usr/lib/python3.12/site-packages/pkgcore/scripts/__init__.py", line 43, in main
    run(os.path.basename(sys.argv[0]))
  File "/usr/lib/python3.12/site-packages/pkgcore/scripts/__init__.py", line 35, in run
    sys.exit(tool())
             ^^^^^^
  File "/usr/lib/python3.12/site-packages/snakeoil/cli/tool.py", line 81, in __call__
    ret = self.main()
          ^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/snakeoil/cli/tool.py", line 191, in main
    self.handle_exec_exception(e)
  File "/usr/lib/python3.12/site-packages/snakeoil/cli/tool.py", line 173, in main
    self.options, func = self.parse_args(
                         ^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/snakeoil/cli/tool.py", line 128, in parse_args
    self.handle_exec_exception(e)
  File "/usr/lib/python3.12/site-packages/snakeoil/cli/tool.py", line 102, in parse_args
    options = self.parser.parse_args(args=args, namespace=namespace)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/snakeoil/cli/arghparse.py", line 1263, in parse_args
    args, unknown_args = self.parse_known_args(args, namespace)
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/snakeoil/cli/arghparse.py", line 1250, in parse_known_args
    namespace, args = self._parse_known_args(args, namespace)
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: ArgumentParser._parse_known_args() missing 1 required positional argument: 'intermixed'

Work fine after downgrade to 3.12.7

[thesamesam]

python/cpython@da3d81d presumably