Cannot install or update Maestral

[nyanpasu64]

Describe the bug
When running pipx install maestral[gui] or pipx upgrade-all, it crashes:

How to reproduce

nyanpasu64@ryzen ~ [2]> pipx install --verbose maestral[gui]
pipx >(setup:757): pipx version is 1.1.0
pipx >(setup:758): Default python interpreter is '/usr/bin/python'
pipx >(package_name_from_spec:323): Determined package name: maestral
pipx >(package_name_from_spec:324): Package name determined in 0.0s
creating virtual environment...
pipx >(run_subprocess:173): running /usr/bin/python -m venv --without-pip /home/nyanpasu64/.local/pipx/venvs/maestral
pipx >(run_subprocess:173): running /home/nyanpasu64/.local/pipx/venvs/maestral/bin/python -c import sysconfig; print(sysconfig.get_path('purelib'))
pipx >(run_subprocess:173): running /home/nyanpasu64/.local/pipx/shared/bin/python -c import sysconfig; print(sysconfig.get_path('purelib'))
pipx >(run_subprocess:173): running /home/nyanpasu64/.local/pipx/venvs/maestral/bin/python --version
pipx >(_parsed_package_to_package_or_url:128): cleaned package spec: maestral[gui]
installing maestral from spec 'maestral[gui]'...
pipx >(run_subprocess:173): running /home/nyanpasu64/.local/pipx/venvs/maestral/bin/python -m pip install maestral[gui]
pipx >(run_subprocess:173): running <fetch_info_in_venv commands>

pipx >(rmdir:55): removing directory /home/nyanpasu64/.local/pipx/venvs/maestral
Traceback (most recent call last):
  File "/usr/lib/python3.10/site-packages/packaging/requirements.py", line 35, in __init__
    parsed = parse_requirement(requirement_string)
  File "/usr/lib/python3.10/site-packages/packaging/_parser.py", line 64, in parse_requirement
    return _parse_requirement(Tokenizer(source, rules=DEFAULT_RULES))
  File "/usr/lib/python3.10/site-packages/packaging/_parser.py", line 82, in _parse_requirement
    url, specifier, marker = _parse_requirement_details(tokenizer)
  File "/usr/lib/python3.10/site-packages/packaging/_parser.py", line 120, in _parse_requirement_details
    specifier = _parse_specifier(tokenizer)
  File "/usr/lib/python3.10/site-packages/packaging/_parser.py", line 206, in _parse_specifier
    with tokenizer.enclosing_tokens("LEFT_PARENTHESIS", "RIGHT_PARENTHESIS"):
  File "/usr/lib/python3.10/contextlib.py", line 142, in __exit__
    next(self.gen)
  File "/usr/lib/python3.10/site-packages/packaging/_tokenizer.py", line 183, in enclosing_tokens
    self.raise_syntax_error(
  File "/usr/lib/python3.10/site-packages/packaging/_tokenizer.py", line 163, in raise_syntax_error
    raise ParserSyntaxError(
packaging._tokenizer.ParserSyntaxError: Expected closing RIGHT_PARENTHESIS
    stone (>=2.*)
          ~~~~^

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/bin/pipx", line 8, in <module>
    sys.exit(cli())
  File "/usr/lib/python3.10/site-packages/pipx/main.py", line 819, in cli
    return run_pipx_command(parsed_pipx_args)
  File "/usr/lib/python3.10/site-packages/pipx/main.py", line 202, in run_pipx_command
    return commands.install(
  File "/usr/lib/python3.10/site-packages/pipx/commands/install.py", line 60, in install
    venv.install_package(
  File "/usr/lib/python3.10/site-packages/pipx/venv.py", line 244, in install_package
    self._update_package_metadata(
  File "/usr/lib/python3.10/site-packages/pipx/venv.py", line 318, in _update_package_metadata
    venv_package_metadata = self.get_venv_metadata_for_package(
  File "/usr/lib/python3.10/site-packages/pipx/venv.py", line 300, in get_venv_metadata_for_package
    venv_metadata = inspect_venv(
  File "/usr/lib/python3.10/site-packages/pipx/venv_inspect.py", line 251, in inspect_venv
    app_paths_of_dependencies = _dfs_package_apps(
  File "/usr/lib/python3.10/site-packages/pipx/venv_inspect.py", line 142, in _dfs_package_apps
    app_paths_of_dependencies = _dfs_package_apps(
  File "/usr/lib/python3.10/site-packages/pipx/venv_inspect.py", line 121, in _dfs_package_apps
    dependencies = get_package_dependencies(
  File "/usr/lib/python3.10/site-packages/pipx/venv_inspect.py", line 54, in get_package_dependencies
    for req in map(Requirement, dist.requires or []):
  File "/usr/lib/python3.10/site-packages/packaging/requirements.py", line 37, in __init__
    raise InvalidRequirement(str(e)) from e
packaging.requirements.InvalidRequirement: Expected closing RIGHT_PARENTHESIS
    stone (>=2.*)
          ~~~~^

Expected behavior
pipx does not crash.

This may be the same bug as #924, which is closed saying it's an upstream packaging 22.0 bug pypa/packaging#629. But I have packaging 23.0 installed from Arch Linux, which should have the bug fixed, but I'm still getting this crash.

[dukecat0]

Can you confirm that you are using packaging 23.0 by running /usr/bin/python -m pip list | grep "packaging"?

[nyanpasu64]

nyanpasu64@ryzen ~> /usr/bin/python -m pip list | grep "packaging"
packaging                     23.0
nyanpasu64@ryzen ~> ls -ld /usr/lib/python3.10/site-packages/packaging-*.dist-info
drwxr-xr-x 1 root root 102 Feb 12 09:26 /usr/lib/python3.10/site-packages/packaging-23.0.dist-info/

[uranusjr]

It's not the same bug. The >=2.* specifier is invalid. See https://discuss.python.org/t/22782

[nyanpasu64]

How can I tell which package contains stone (>=2.*)? Maestral itself only imports dropbox.stone_validators, and maestral-qt doesn't reference stone at all.

Eventually I found through trial and error that dropbox-11.36.0.dist-info/METADATA contains 27:Requires-Dist: stone (>=2.*), but I'd like pipx to print the package with invalid metadata, rather than failing with a messy stack trace.

(Upstream bug: dropbox/dropbox-sdk-python#458)