[Framework-Team] Plone 3.0 product deployment

[Philipp von Weitershausen]

I realize Plone 3.0 will ship with both packages and old-style products. 
Recently I wrote a proposal that should alleviate this problem by making 
it possible to deploy products as eggs [1]. I thought that this would 
become relevant only for Plone 3.5.

Now Daniel Nouri made me aware that you can already deploy products as 
eggs. In fact, you can already deploy products into lib/python, as long 
as lib/python/Products/__init__.py contains a namspace package 
declaration (in the setuptools sense, 
pkg_resources.declare_namespace('Products')). That means that Plone 3.0 
can at least ship as *one* tarball for lib/python (in which all the 
traditional products are in such a 'Products' namespace package). I 
think that's great news, especially for the traditional deployment route 
of downloading a tarball.

It also means that Plone 3.0 would also be installable as eggs, given 
that somebody would make eggs out of the existing products and the CMF. 
That's mostly mechanical work, however. Hence, an installation via 
zc.buildout (using somethinglike ploneout) isn't so far fetched, and you 
wouldn't even need a special recipe to install products -- you'd just 
use the egg recipe.

I thought I'd run this by you guys. Daniel might have even more to say.

Philipp


[1] 
http://wiki.zope.org/zope2/EggifyingZopesExtensionMechanismQuotProductsQuot

-- 
http://worldcookery.com -- Professional Zope documentation and training
Next Zope 3 training at Camp5: http://trizpug.org/boot-camp/camp5