Package selection in T2

Hi,

I am new to T2 and my first try to build a small i386 installation
(based on T2 trunk) ends up in a question where I currently
haven't found any answer in the docs:

If I build an i386 installation with a minimalistic package
selection and then tell T2 to use runit instead of sysvinit I get an
error because there is a shared file used. This maybe a problem
because sysvinit and runit seems to be used. How can I disable selected
packages and how can I enable them? I haven't found any hints about
where to setup special selected packages...

Thanks a lot,

Holger

P.S.: Also thanks for the persons at Linuxtag2008 who gave me many
answers on my beginner questions :-)

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