Comment 4 for bug 1730159

This impacts the memory footprint of all Ubuntu installs in 18.04, including e.g. lxd containers which ship no snaps by default. This should be prioritized for fixing in 18.04 (via SRU if needed).

Yes, this will need to be implemented in snapd directly; snapd will be started on boot and should cleanly shut itself down if it's idle and has no snaps installed.