Ok, so shiboken is not building with Python 3.8[1], presumably due to dropping some of the suffix designations (m d?) so the cmake logic is not finding the library...
I tried to poke around a bit but I don't have the cycles to dig into enough to fix it. I could use some help from someone more familiar with cmake + python....
You just need to add the mock chroot[2] in order to test builds with python 3.8...
Thanks,
Richard