hmm, then we have to keep zope 2.1 as well (the version from
potato). Why do you want to keep 2.3, not 2.2? Why not 2.5? IMO If you
have a mission critical application, which is incompatible among zope
versions, then you should install your own zope. Am I wrong here?

Jim Penny writes:
> I have a zope 2.3 site.  My best guess is that to upgrade it to
> zope2.4 is going to be a three day (24 working hour) process.  I
> cannot just take it down for three days at my convenience.  This
> will have to wait until there is a plant shutdown.
> 
> I suspect that anyone who has a lot of labor invested in zope 2.3 is in
> a similar circumstance.  I am not sure that the upgrade process has been,
> nor even can be, fully automated; particularly if the user still  has
> the older pythonscripts, rather than the Script (Python).
> 
> For similar reasons, I can see someone beginning a migration to zope 2.4
> and then having to backtrack to 2.3 to get the site back on-line fast
> enough.  In fact, I would have been far more comfortable had zope been
> versioned, so that both a 2.3 and a 2.4 could exist concurrently.  This
> would make site migration far easier, as the older site could be peeled
> off folder by folder and tested that way, with less fear of major 
> disruption.
> 
> If we are to argue that python is "mission critical" and that "mission
> critical applications" are to be built on it; then we have to behave
> that way.  And one implication of this is that we have to be very
> conservative in dropping old major releases.  A two year lead time
> notice seems not at all unreasonable.  That is, put a prominent notice
> that the package will be withdrawn two years from now.  Put in in both
> the Debian README, and in the python-doc front page.
> 
> Then, if someone comes back whining that their application no longer
> works after that date, well, at least they will have been put firmly
> on notice of the deadline, with enough lead time to do something
> about it.


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