Creating a new email user with `postfix` on Void

This is possibly specific to my own super-minimal postfix setup on Void, but to add a new email user:

$ sudo adduser someone
$ sudo passwd someone

Amend /etc/postfix/virtual, as follows:

[email protected] someone

Regenerate the virtual alias table:

$ sudo /usr/sbin/postmap /etc/postfix/virtual

And finally restart postfix:

$ sudo sv restart postfix