After trying harder to search, with Google returning a SINGLE link that was actually raw XML but it was clearly a Bugzilla URL which I somewhat know how to deal with, I just found this report made a couple days ago:
I still have no idea why this is happening
For anyone else having this issue, apply this patch to libvirt-python.
Seems to work at first glance, hope nothing falls over
Personal server. Totally overkill but ok.