use finalize_distribution_options entrypoint order

fixes #1993

setuptools/dist.py

@@ -731,13 +731,13 @@ class Distribution(_Distribution):
         to influence the order of execution. Smaller numbers
         go first and the default is 0.
         """
-        hook_key = 'setuptools.finalize_distribution_options'
+        group = 'setuptools.finalize_distribution_options'
 
         def by_order(hook):
             return getattr(hook, 'order', 0)
-        eps = pkg_resources.iter_entry_points(hook_key)
+        eps = map(lambda e: e.load(), pkg_resources.iter_entry_points(group))
         for ep in sorted(eps, key=by_order):
-            ep.load()(self)
+            ep(self)
 
     def _finalize_setup_keywords(self):
         for ep in pkg_resources.iter_entry_points('distutils.setup_keywords'):