As we agreed on this list many months ago, I'd like to change the
zope code to use the UTC timezone explicitly, rather than utcnow
(datetime.datetime.utcnow() -> datetime.datetime.now(pytz.utc). I
only plan to change this in one place: zope/app/dublincore/
timeannotators.py.
The reason I bring this up here (again) is that the change will
introduce a potential problem with legacy databases. If there are
comparisons of creation or modification dates--as an index of these
values would make, for instance--then the comparison of the old naive
and the new aware datetimes will cause creation and modification of
indexed objects to fail.
A migration path that is good enough for the catalog use case is to
walk over all of the objects in the intid utility, convert the
datetimes for creation and modification, and finally reindex your
catalogs. That's probably all we (ZC) need, for instance.
May I proceed?
Gary
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