pub fn setuptools_setup_py_python_requires(setup_py: &Path) -> Option<String>Expand description
Read the python_requires specifier a legacy setup.py declares.
This is setuptools’ spelling of pyproject.toml’s requires-python, and it
is what selects the standard-library semantic pack for a project that has no
PEP 621 manifest. The script is read, never executed: only a literal string
passed to a top-level call to an imported setup binding counts, and two
calls that disagree declare nothing.