[Product-Developers] Package versions, Plone 3, Plone 4

[Wichert Akkerman]

On 3/18/10 16:17 , Radim Novotny wrote:
> Hi all,
>
> I'm wondering how to handle add-on package versions if package is
> different for Plone 3 and Plone 4.
>
> Situations:
>
> 1) dependencies - package requires some add-on which is obsolete in
> Plone 4, eg. collective.js.jquery - this adds jQuery 1.3.2 which is in
> Plone 4 by default. I don't want this package installed if my package is
> installed on Plone 4
>
> 2) separate versions for Plone 3 and Plone 4 - for example: I want to
> release the same package for Plone 3 only and for Plone 4 only. How
> should I declare dependencies ? How should I tell users my.package 1.x
> is for Plone 3 and 2.x for Plone 4 only ?

A simple trick is to test the python version, and modifiy your 
requirements list based on that. Chances are that if someone uses 
python2.4 you are dealing with Plone 3, and python 2.6/2.7 can only be 
Plone 4.

Wichert.