[SHALLOW] assumptions about stacking for pack repositories

[Jelmer Vernooij]

Hi !

I've been playing with the shallow branch branch a little bit today,
trying to get it to work with bzr-svn. The main issue so far appears to
be that the implementation of stacking for pack repositories assumes
that the repository on which it is stacking is also a pack repository. A
quick glance at this gave me the impression this assumption is pretty
deep - is that correct?

Of course, this is a problem for bzr-svn, as it would want to stack pack
repositories on top of svn repositories.

Cheers,

Jelmer