Avoid private _config_vars

Author: Avasam

setuptools/_distutils/tests/test_util.py

@@ -33,7 +33,7 @@ def environment(monkeypatch):
     monkeypatch.setattr(os.path, 'join', os.path.join)
     monkeypatch.setattr(os.path, 'isabs', os.path.isabs)
     monkeypatch.setattr(os.path, 'splitdrive', os.path.splitdrive)
-    monkeypatch.setattr(sysconfig, '_config_vars', copy(sysconfig._config_vars))
+    monkeypatch.setattr(sysconfig, 'get_config_vars', sysconfig.get_config_vars)
 
 
 @pytest.mark.usefixtures('save_env')

setuptools/command/build_ext.py

@@ -26,7 +26,9 @@
 
 # make sure _config_vars is initialized
 get_config_var("LDSHARED")
-from distutils.sysconfig import _config_vars as _CONFIG_VARS  # noqa
+from distutils.sysconfig import get_config_vars  # noqa: E402
+
+_CONFIG_VARS = get_config_vars()
 
 
 def _customize_compiler_for_shlib(compiler):