Python Inspector crashes on requirement gnupg==2.3.1

[nnobelis]

I have a requirements.txt with:

gnupg==2.3.1

Python Inspector crashes with:

/home/ort/.cache/python_inspector/extracted_sdists/gnupg-2.3.1/gnupg-2.3.1/versioneer.py:149: SyntaxWarning: invalid escape sequence '\s'
  mo = re.search(r'=\s*"(.*)"', line)
Traceback (most recent call last):
  File "/opt/python/versions/3.13.5/lib/python3.13/site-packages/packvers/requirements.py", line 102, in __init__
    req = REQUIREMENT.parseString(requirement_string)
  File "/opt/python/versions/3.13.5/lib/python3.13/site-packages/pyparsing/util.py", line 417, in _inner
    return fn(self, *args, **kwargs)
  File "/opt/python/versions/3.13.5/lib/python3.13/site-packages/pyparsing/core.py", line 1219, in parse_string
    raise exc.with_traceback(None)
pyparsing.exceptions.ParseException: Expected W:(0-9A-Za-z)  (at char 0), (line:1, col:1)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/opt/python/versions/3.13.5/lib/python3.13/site-packages/python_inspector/resolve_cli.py", line 259, in resolve_dependencies
    resolution_result: Dict = resolver_api(
                              ~~~~~~~~~~~~^
        requirement_files=requirement_files,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<15 lines>...
[...skipping 46 lines...]
    dependencies.extend(
    ~~~~~~~~~~~~~~~~~~~^
        await self._get_requirements_for_package_from_pypi_simple(candidate)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/opt/python/versions/3.13.5/lib/python3.13/site-packages/python_inspector/resolution.py", line 290, in get_reqs_insecurely
    yield from parse_reqs_from_setup_py_insecurely(setup_py=setup_py_location)
  File "/opt/python/versions/3.13.5/lib/python3.13/site-packages/python_inspector/resolution.py", line 139, in parse_reqs_from_setup_py_insecurely
    for req in iter_requirements(level="", extras=[], setup_file=setup_py):
               ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/python/versions/3.13.5/lib/python3.13/site-packages/python_inspector/setup_py_live_eval.py", line 151, in iter_requirements
    pkg = Requirement(req)
  File "/opt/python/versions/3.13.5/lib/python3.13/site-packages/packvers/requirements.py", line 104, in __init__
    raise InvalidRequirement(
        f'Parse error at "{ requirement_string[e.loc : e.loc + 8]!r}": {e.msg}'
    )
packvers.requirements.InvalidRequirement: Parse error at "''": Expected W:(0-9A-Za-z)

When debugging Python Inspector, install_requires in ~/.local/lib/python3.10/site-packages/python_inspector/setup_py_live_eval.py, has for value
['psutil>=1.2.1', '']

I think the second element of the array is crashing Python Inspector.

Tested with Python Inspector 0.14.3.

[nnobelis]

This error happens only when --analyze-setup-py-insecurely is used.