Changing python system wide on XCP-ng shows that the appliance nature of XCP-ng is really not well understood.

@DustyArmstrong thats super-strange, i actually have the same setup at home, 2 hp z240 machines running xcp-ng in a small pool. xcp1 is always up and running, xcp2 is powered down when I dont need it, everything important is running on xcp1, maybe that's the reason I don't run into these issues.