[Zope3-dev] Re: Site configuration UI (was New Software Space UI)

[Tres Seaver]

Max M wrote:
> Paul Everitt wrote:
> 
>> Jim Fulton wrote:
> 
>> CMF provides a convention that packages should have an 
>> Extensions/Install.py module with an install function.  CMF packages 
>> that observe this convention get listed in Plone Setup's add-on 
>> management screen.

A slight correction:  CMF's convention is that the Extensions 
*directory* should have and 'Install.py' *script* containing an 
'install' function;  CMF expects the site manager to use this script to 
create an ExternalMethod for installing the product into a CMF site. 
E.g., see:

   http://cvs.zope.org/CMF/CMFCalendar/INSTALL.txt?rev=HEAD

*Plone* has the convention that 'Extensions' should be a package, to 
allow importing / introspecting the 'Install' *module* by  Plone's 
QuickInstaller.

> CMF tries to be too clever about this. If you define an insstall() and 
> uninstall() method, CMF still runs it's own uninstall. So you are not in 
> complete controlle of what happens.
> 
> Eg. tools will be deleted. Even though you might not want this to happen.

This has to be a Plone-ism, as CMF doesn't have any 'uninstall' notions 
at all.

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