I made a ghastly mistake. I hit the wrong key and purchased a Pi Zero instead of the Pi Zero W that I wanted.
I have a wifi dongle, but I can't attach it and the keyboard at the same time. I tried an old USB hub, but that didn't work. I suspect it's due to insufficient current.
Is it possible to edit
wpa_supplicant.conf without the presence of wifi hardware and expecting it to work when I attach the wifi dongle later?