can't depend on packaing being v24

scripts/python_build_utils.py

@@ -56,13 +56,17 @@ def normalize_version(package, project, extra_tag='', git_dir=None):
     # the way they vendor dependencies, like the packaging module that
     # provides the way to normalize version numbers for wheel file names. So
     # we try all the possible ways to find it.
+    # Since 71.0.0 they have removed the need for extern
+    # So depending on the version of 3.10 you're building on you may or may not
+    # need to use the extern or import it directly
     try:
-        # new way
         import setuptools
         major, minor, patch = [int(x, 10) for x in setuptools.__version__.split('.')]
         if major < 71:
+            # new way
             from setuptools.extern import packaging
         else:
+            # new new way
             import packaging
     except ImportError:
         # old way