Code review comment for lp:~jibel/livecd-rootfs/add_multi_layered_squashfses_support

Thanks for working on this, it will be nice to have cleaner handling of the desktop-minimal stuff included here in livecd-rootfs.

I would like to see this converged with the ubuntu-server-live handling as part of landing of this branch (see also Dimitri's review comments). You've gone to some length to implement this in a way that's generalizable across projects, so we ought to make sure the implementation is actually reusable by the only other image that currently uses layered squashfs.