[Zope3-dev] Re: mini howto and discussion: Zope 2 and Zope 3

[Tres Seaver]

Gary Poster wrote:

> 1) what you need to get started
> 
> get zope3 (we're on a march-5-2004 tag because we haven't caught up with
> the most recent big changes yet, but the head will probably work for
> what I'm describing now), Zope2 (we're using 2.7.0 final
> or--temporarily--the 2.7 beta 3, depending on other stuff), and the
> Interface package (HEAD; this is Packages3/Interface in the zope
> repository) .
> 
> Using your favorite method--site-packages, python path, whatever--make
> sure that the new Interface package will be found before the one
> in Zope 2.  We typically put the Interface package in our Zope's 
> Python's site-packages...I forget why.

Small nit:  putting the new 'Interface' package in 'site-pacakges' won't 
work, because 'PYTHONPATH' trumps 'site-packages'.  You need to wedge 
the new Interface package in at the head of 'PYTHONPATH' (or at least 
before Zope2's 'SOFTWARE_HOME').

>  Then we make the PYTHONPATH load 
>  Zope 2 (and, importantly Zope 2's ZODB...or another Zope 2-compatible 
> ZODB is fine), and *then* Zope 3 (so we're masking Zope 3's ZODB 
> package.  This works on Windows too, btw--Zope 2's "Zope" package does 
> not mask Zope 3's "zope" package even though Windows is not 
> case-sensitive because Python compensates for this OS error ;-)

Tres.
-- 
===============================================================
Tres Seaver                                tseaver at zope.com
Zope Corporation      "Zope Dealers"       http://www.zope.com