nato wrote at 2005-11-21 10:39 -0800:
> ...
>>> The migration is trivial as long as "BTree" and "Intset" are still
>>> available. We use for example the following "BTree" migration.
> ...
>It doesn't really help. We are skipping distribution of ZOPE 2.7.

The new datastructures are there for ages, long before Zope 2.7.

You can migrate in any Zope version that knows about both the
old and the new data structures -- but you need both. Therefore,
Zope 2.8 cannot migrate (as it no longer knows the old structures).

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