This thread, the choice to make it a new thread & the fact that it’s not under general discussion all confuse me. Furthermore, there’s no mention of how said packages are deployed thus, no way to specify actual update commands.
If it’s a matter of maintaining updates on a standalone, it’s not a Qubes discussion IMO. So, why not:
echo '#!/bin/bash' >> /etc/cron.daily/awesomeupdater.sh
echo 'update_all_teh_tings' >> /etc/cron.daily/awesomeupdater.sh
chmod +x /etc/cron.daily/awesomeupdater.sh
OR
echo '#!/bin/bash' >> /etc/profile.d/awesomeupdater.sh
echo 'update_all_teh_tings' >> /etc/profile.d/awesomeupdater.sh
chmod +x /etc/profile.d/awesomeupdater.sh