Hi. I had some time to work on the Zope2 egg and the correct / minimal dependency set. The current work is at: svn://svn.zope.org/repos/main/Zope2.buildout/trunk This gives you a Zope2 egg in a buildout environment with the latest releases of all dependencies included. The Zope2 egg itself installs fine into a virtualenv via 'python setup.py develop' as well. Running the tests via bin/test results in one broken test in Five's aq_legacy.txt right now. It is a test interdependency failure, as the Five tests pass on their own. In terms of dependencies, we have 38 direct dependencies on zope.* packages and 13 other dependencies (ZODB3, docutils, ...). Including the indirect dependencies we pull in 65 zope.* packages in total. A classic Zope2 tarball so far included 103 zope.* packages. Thanks to tl.eggdeps, Rok Garbas [1] and Marius Gedminas [2] I made updated dependency graphs for all direct zope.* dependencies of Zope2 [3]. I tried to trim these via 'tred' as Marius suggested, but all non-trivial graphs have circular dependencies, which made 'tred' produce useless output for me. If you want to continue to help on sanitizing the dependencies, sorting the graphs by size [4] is a good starting point. You can see that circular dependencies exist for all of: zope.location, zope.publisher, zope.security and zope.traversing. All the packages whose dependency graph is more than 1 megabyte clearly have a problem. The dot files are quite good to read for those. I'll continue to work on this, feel free to jump in :) Hanno [1] http://sharbas.blogspot.com/2008/09/repozeplone-dependecy-graph.html [2] http://mg.pov.lt/blog/simplifying-dependency-graphs.html [3] http://hannosch.eu/zope2-dependencies [4] http://hannosch.eu/zope2-dependencies/?S=D