New Zope & Plone packages for hoary

[finegus]

Hi, 

I've a difficulty with adding zope/plone.

I've added  deb http://people.ubuntu.com/~doko/zope ./
to /etc/apt/sources.list

and entered apt-get install zope2.7-sandbox

but I keep getting messages like:

The following packages have unmet dependencies:
zope2.7-sandbox: Depends: zope2.7 but it is not going to be
installed
E: Broken packages

When I try something like

apt-get install zope

I get 

The following packages have unmet dependencies:
zope: Depends: python2.2-xml but it is not going to be installed
E: Broken packages


I'm a newbie to the whole world of apt-get, and suspect that my problem
lies there.. can you recommend a good place for me to start my debugging
of this.
BTW I was not able to install  zope 2.6  on warty or hoary using the
universe repository due to similar issues


-- 
finegus