Bug#586428: Please clear the apt cache

[Petter Reinholdtsen <pere@hungry.com>]

[Otavio Salvador]
> It looks it will need to be optional otherwise this is going to break
> Debian EDU.
>
> But  I see your point in doing it twice :)

One setup that would not break Debian Edu is to clean the apt cache
once just after debootstrap, as bind-mounting the apt cache is only
done after debootstrap is done when building the LTSP chroot.  The
reason is simply that as far as I know, there is no way to get
debootstrap to use an existing apt cache, so those packages are
downloaded every time.  It is at the moment ~50 MiB of debs.  The
remaining 3 GiB of packages are fetched from the apt cache,
thought. :)

And it can also be cleaned at the very end of the installation, after
the LTSP chroot is created between pkgsel and finish-install.

Happy hacking,
-- 
Petter Reinholdtsen