I just installed guix on a virtual machine.. how can I run sshd?

I am a first time guix user and need assistance doing this basic thing. I did guix pull and guix install openssh but the sshd command is not there. After typing guix pull and guix install openssh, I have now the openssh package but the sshd command is not there. After reading this excerpt it seems I need to edit a configuration, however this enviroment was just the qemu image of guix. And /etc/config.scm is an empty file. So there is nothing to edit. How can I run the sshd service, after booting in guix?