No sudoer file

[Linux for blind general discussion]

the root account having root as its username is normal on systems that
allow logging in as root. In fact, I'm not aware of any distro that
allows giving the root account a different username, though some
distros have the option to disable the root account or even have it
disabled by default(After all, with properly configured sudo, logging
in as root isn't really necessary).

No clue on what went wrong with configuring sudo or how to fix it
though, nor can I help with the arch-specific bits as I'm most
familiar with Debian and its derivatives.