Apparently after 9 months of messing around, the tobii 4c will not work with PsychoPy:
https://discourse.psychopy.org/t/eyectracker-tobii-4c-works-on-psychopy/2774
It seems all the inexpensive eye trackers will not work with IOHub unless one finds a used model of one that will. I hope to find out which models work. EyeX? or ?