aboutcode-org / aboutcode-org/python-inspector

ImportError: Cython not found! when inspecting `hdbscan==0.8.33`

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Question: Is this something which can be fixed in python inspector? Or does this need a fix in the dependency?

The following reproduces with version 0.10.0:

1. Setup a requirements.txt:
```
hdbscan==0.8.33 ; python_version >= "3.11" and python_version < "4.0"
```

2. Run inspection like:
```
python-inspector --python-version 311 --operating-system linux --json-pdt x.json --analyze-setup-py-insecurely --requirement r.txt
Warning: ambiguous setup provider in /workspace/.cache/python_inspector/extracted_sdists/hdbscan-0.8.33/hdbscan-0.8.33/setup.py: candidates are ['setuptools', 'setuptools']defaulting to 'distutils.core'.
:8: UserWarning: No module named 'Cython'
:92: UserWarning: Due to incompatibilities with Python 3.7 hdbscan nowrequires Cython to be installed in order to build it
Traceback (most recent call last):
File "/opt/python/versions/3.11.5/lib/python3.11/site-packages/python_inspector/resolve_cli.py", line 253, in resolve_dependencies
resolution_result: Dict = resolver_api(
^^^^^^^^^^^^^
File "/opt/python/versions/3.11.5/lib/python3.11/site-packages/python_inspector/api.py", line 279, in resolve_dependencies
resolution, purls = resolve(
^^^^^^^^
File "/opt/python/versions/3.11.5/lib/python3.11/site-packages/python_inspector/api.py", line 341, in resolve
resolved_dependencies, packages = get_resolved_dependencies(
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/python/versions/3.11.5/lib/python3.11/site-packages/python_inspector/api.py", line 379, in get_resolved_dependencies
resolver_results = resolver.resolve(requirements=requirements, max_rounds=max_rounds)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/python/versions/3.11.5/lib/python3.11/site-packages/resolvelib/resolvers.py", line 546, in resolve
state = resolution.resolve(requirements, max_rounds=max_rounds)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/python/versions/3.11.5/lib/python3.11/site-packages/resolvelib/resolvers.py", line 427, in resolve
failure_causes = self._attempt_to_pin_criterion(name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/python/versions/3.11.5/lib/python3.11/site-packages/resolvelib/resolvers.py", line 239, in _attempt_to_pin_criterion
criteria = self._get_updated_criteria(candidate)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/python/versions/3.11.5/lib/python3.11/site-packages/resolvelib/resolvers.py", line 229, in _get_updated_criteria
for requirement in self._p.get_dependencies(candidate=candidate):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/python/versions/3.11.5/lib/python3.11/site-packages/python_inspector/resolution.py", line 644, in get_dependencies
return list(self._iter_dependencies(candidate))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/python/versions/3.11.5/lib/python3.11/site-packages/python_inspector/resolution.py", line 635, in _iter_dependencies
for r in self.get_requirements_for_package(purl=purl, candidate=candidate):
File "/opt/python/versions/3.11.5/lib/python3.11/site-packages/python_inspector/resolution.py", line 497, in get_requirements_for_package_from_pypi_simple
yield from get_reqs_insecurely(
File "/opt/python/versions/3.11.5/lib/python3.11/site-packages/python_inspector/resolution.py", line 277, in get_reqs_insecurely
yield from parse_reqs_from_setup_py_insecurely(setup_py=setup_py_location)
File "/opt/python/versions/3.11.5/lib/python3.11/site-packages/python_inspector/resolution.py", line 128, in parse_reqs_from_setup_py_insecurely
for req in iter_requirements(level="", extras=[], setup_file=setup_py):
File "/opt/python/versions/3.11.5/lib/python3.11/site-packages/python_inspector/setup_py_live_eval.py", line 117, in iter_requirements
exec(file_contents, g)
File "", line 94, in
ImportError: Cython not found! Please install cython and try again

```

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