clean up

scripts/python_build_utils.py

@@ -56,14 +56,15 @@ 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 this system has been removed and we're back to just
+    # straight up import the package
     try:
-        # new way
-        import setuptools
-        major, minor, patch = [int(x, 10) for x in setuptools.__version__.split('.')]
-        if major < 71:
-            from setuptools.extern import packaging
-        else:
+        try:
+            # new new way
             import packaging
+        except ImportError:
+            # new way
+            from setuptools.extern import packaging
     except ImportError:
         # old way
         from pkg_resources.extern import packaging