Hi, Sorry if this is not the correct list for this issue. We have patched the zc.recipe.cmmi so that it (optionally) leaves the sources in place, so that other packages can build against it. It just unpacks the archive into the parts dir instead of to a tempfile (if a dev option is set in the buildout), and then builds it in place. I attach the patch. Otherwise we probably would upload it as yaco.recipe.cmmi-devel, would this be correct?