[Plone-developers] Mixing a Plone site with a package requiring the Zope Component Architecture

[Christian S. <cs...@co...>]

Hi!

I am just running in some annoying problem which is as follows:

- I install a Plone installation via paster create -t plone3_buildout
- I include some package in the buildout.cfg which requires the ZCA 
which means it has

   zope.interface
   zope.component
in it's setup.py
- I run buildout and try to create a site

When doing this I get the following exception:

...
   Module Products.CMFQuickInstallerTool.QuickInstallerTool, line 470, 
in installProduct
    - __traceback_info__: ('CMFFormController',)
   Module Products.CMFQuickInstallerTool.QuickInstallerTool, line 391, 
in snapshotPortal
   Module five.localsitemanager.registry, line 176, in registeredUtilities
ValueError: too many values to unpack

My guess what is happening here is as follows:

- zope.component/interface is already installed as part of the Zope2 
installation (but which version?)
- as they are not installed as an egg, they will get installed 
additionally via the setup.py of the package. This results in versions 
3.5.1 of component and 3.4.1 of interface plus many additional zope eggs.
- Both versions (3.4.1) are esp. incompatible with five.localsitemanager 
  0.3

Trying to force the use of five.localsitemanager==0.4 results in a 
version conflict.

Is there anything I can do to solve this problem?

(I maybe can remove the dependencies manually from the setup.py but this 
does not solve the general problem and the repeatability of that buildout).

Thanks!

-- Christian

-- 
Christian Scholz                          Homepage: http://comlounge.net
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