Hello!
I installed the "wireguard" package and used one of its commands
"wg-quick", but it fails because the package "resolvconf" was not found. So
I'm suggesting setting "resolvconf" as a dependency for "wireguard". See
the screenshot attached.
I was using Debian Bullseye for this. Wireguard doesn't seem to exist under
Buster.
Hope this helps! =)