[Distutils] alternatives to zc.buildout?

Hi All, What are the alternatives to zc.buildout? I'm wondering before I plough into zc.buildout because I'm guessing other big projects have run into the problem of pinning certain versions of eggs, building "instance homes" for projects, using a mixture of "public" eggs and those that are private and for a specific project, etc and otherwise working round limitations in setuptools... cheers, Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk