build a CD from varous repositories

["Geronimo Ma. Hernandez" <geronimo013@gmx.com>]

Hello,

I started with the toolchain and the "mirror-sync" script from alioth.
All parts played together and I got my first self-build image.

Now I would like to add packages from other repositories to the CD - so I have 
to mirror them too.

The run of the mirror-sync wasted most of my diskspace with packages, that 
never would go to CD - and I don't know, whether all repositories fit on a 
single partition.

Is there a (documented?) way to create partial mirrors from various 
repositories, so the building of the CD can succeed?

I think of a way like apt-get works, based on packagelist and sources.list - 
but without caring about the installed packages on the host.

Any hint is appreciated.
Geronimo