[Zope3-dev] Re: ZODB versions / and windows eggs

Philipp von Weitershausen philipp at weitershausen.de
Sun Aug 19 07:08:43 EDT 2007

Martijn Faassen wrote:
> I noticed the following eggs need a newer binary release for windows:
> zope.hookable. There's a 3.4.0 release and binary egg is still at 3.4.0a1
> zope.i18nmessageid. There's a 3.4.0 release and binary egg is still at 
> 3.4.0a1.

Thanks for noticing. I think we need to adopt a routine of building 
Windows eggs whenever we make a new release of a package that has C 
extensions. There aren't that many packages like that (about a dozen) 
and they hopefully aren't going to have that many releases in the future.

I've built Windows eggs for the two you mention now using the MinGW 
compiler (nobody has objected to it so far, and I figure 
cheap-but-perhaps-slow eggs are better than none). They're up on the 

MinGW, btw, is real easy to install and has helped me getting the 
eggified Zope 3 finally working on Windows when there were no binary 
eggs on the CheeseShop yet. See 
for some detailed installation instructions.

> Then there's some ZODB confusion:
> I also noticed that there is supposed to be a ZODB-3.8.0b4 at least, as 
> zope.app.keyreference puts its requirement to this.

You probably mean ZODB3-3.8.0b3. This is at least what 
zope.app.keyreference 3.5.0b1 depends on. ZODB 3.8.0b3 is available on 
the CheeseShop, incl. a binary Windows egg: 

> Unfortunately there 
> is no such release to download.zope.org/distribution. The latest release 
> is ZODB3 3.8.0b2, and a newer ZODB3 3.9.0-dev-r77011. Because of 
> zope.app.keyreference, a lot of people have likely been picking up the 
> latter, which is probably not a good idea. What was the motivation for 
> this 3.9 release? I hope its Data.fs still work with ZODB 3.8, as 
> otherwise going back to this will be a problem for some people.

As far as I can remember, the ZODB3 line has never changed its data 
format in an incompatible way. It's usually Zope 2 which used to install 
objects that, when you went back in versions, became broken.

Regarding the changes in the ZODB 3.9 and zope.app.keyreference, the 
story goes like this:

- Gary fixed a bug in the ZODB's confliction resolution code in r76953. 
Probably because this bugfix also introduced new features (multi-db 
conflicts, oid and database name inspection), this bugfix initially 
didn't make it to the ZODB 3.8 line, only the trunk. Gary therefore 
released a ZODB 3.9 dev release.

- In r77018, Gary changed zope.app.keyreference to support the new 
conflict resolution features, therefore it then depended on the ZODB 3.9 
dev release. This was released in a zope.app.keyreference 3.5.0 dev release.

- Jim merged Gary's fixes to the ZODB 3.8 branch in r78263 and released 
a ZODB 3.8.0b3 subsequently. He then relaxed the ZODB dependency in 
zope.app.keyreference to require 3.8.0b3 or greater in r78267. This was 
released as zope.app.keyreference 3.5.0b1.

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