I really don’t know if it is related but still :
Yesterday I tried to install sudo and mistyped after a warning saying it is in conflict with almost every ynunohost related packages. So reinstalled 'em all.
This said it might be helpfull to protect sudo by including a protective rule in apt over the sudo package (and any yunohost stuff with conflicting package) in /etc/apt/preferences.
Package: sudo
Pin: release a=yunohost
Pin-Priority: 900
Or something so…