Remove hardcoded libpython binaries and add debug step

venv/lib/python3.12/site-packages/setuptools/tests/test_logging.py

@@ -0,0 +1,76 @@
+import functools
+import inspect
+import logging
+import sys
+
+import pytest
+
+IS_PYPY = '__pypy__' in sys.builtin_module_names
+
+
+setup_py = """\
+from setuptools import setup
+
+setup(
+    name="test_logging",
+    version="0.0"
+)
+"""
+
+
+@pytest.mark.parametrize(
+    ('flag', 'expected_level'), [("--dry-run", "INFO"), ("--verbose", "DEBUG")]
+)
+def test_verbosity_level(tmp_path, monkeypatch, flag, expected_level):
+    """Make sure the correct verbosity level is set (issue #3038)"""
+    import setuptools  # noqa: F401  # import setuptools to monkeypatch distutils
+
+    import distutils  # <- load distutils after all the patches take place
+
+    logger = logging.Logger(__name__)
+    monkeypatch.setattr(logging, "root", logger)
+    unset_log_level = logger.getEffectiveLevel()
+    assert logging.getLevelName(unset_log_level) == "NOTSET"
+
+    setup_script = tmp_path / "setup.py"
+    setup_script.write_text(setup_py, encoding="utf-8")
+    dist = distutils.core.run_setup(setup_script, stop_after="init")
+    dist.script_args = [flag, "sdist"]
+    dist.parse_command_line()  # <- where the log level is set
+    log_level = logger.getEffectiveLevel()
+    log_level_name = logging.getLevelName(log_level)
+    assert log_level_name == expected_level
+
+
+def flaky_on_pypy(func):
+    @functools.wraps(func)
+    def _func():
+        try:
+            func()
+        except AssertionError:  # pragma: no cover
+            if IS_PYPY:
+                msg = "Flaky monkeypatch on PyPy (#4124)"
+                pytest.xfail(f"{msg}. Original discussion in #3707, #3709.")
+            raise
+
+    return _func
+
+
+@flaky_on_pypy
+def test_patching_does_not_cause_problems():
+    # Ensure `dist.log` is only patched if necessary
+
+    import _distutils_hack
+
+    import setuptools.logging
+
+    from distutils import dist
+
+    setuptools.logging.configure()
+
+    if _distutils_hack.enabled():
+        # Modern logging infra, no problematic patching.
+        assert dist.__file__ is None or "setuptools" in dist.__file__
+        assert isinstance(dist.log, logging.Logger)
+    else:
+        assert inspect.ismodule(dist.log)