Comment 1 for bug 407408

One approach is to try to make a buildout option to ignore specific system eggs for specific packages (a blacklist). (Maybe a whitelist would be better. There is already an option to ignore all system eggs, but we can't use it because we actually want some of them.) I may try to add this, because it sounds like a reasonable feature for us and I think I see how to do it.

However, if this is merely a test fragility, it would be nice for you all to also address things on your end.