[Distutils] How to upgrade distribute with distribute_setup if necessary?

I can't install Sphinx in a Python 3.2 directory with distribute 0.6.13 installed due to a bug in outdated distribute. Sphinx uses distribute_setup.py and if no setuptools installed it fetches new version where there is no such problem. The check is the following code: try: from setuptools import setup, find_packages except ImportError: import distribute_setup distribute_setup.use_setuptools() from setuptools import setup, find_packages What is the proper way to modify it to make distribute_setup.py upgrade distribute if necessary? -- anatoly t.