I’ve uploaded an OpenBSD template to https://qubes.3isec.org/ if any one
is interested.
If you want to give it a try, please read this page
You must set virt_mode to hvm, and initialise the private storage with
newfs sd1c on first boot.
You can configure networking in the qube using information from the
qube settings, and creating two files in /home/config to hold the IP
address and the netvm IP.
Otherwise it’s a vanilla OpenBSD install.