you may be able to delete my posts here. i re-installed a persistent whonix host on a usb drive, ran “apt-get-update-plus install qemu-utils” and it installed without issue.
i then purged “qemu-utils,” ran “apt-get-update-plus dist-upgrade” and then ran “apt-get-update-plus install qemu-utils”. it installed without issue.
i’m not sure what the issue was where the host was complaining about it being uninstallable. but, it occurred on 2 fresh installs of a persistent whonix host to a usb. maybe a sync issue? i don’t know. but, maybe others want to give a test? i encountered this issue on two fresh installs.
either way, it may not need to take away from the question of “buster-updates” being enabled. but, on my last test, the problem didn’t occur.
on a side note, maybe “qemu-utils” should be installed in advance on whonix host with the distro image?