https://bugzilla.redhat.com/show_bug.cgi?id=1664384
--- Comment #2 from Miro Hrončok mhroncok@redhat.com --- Also a typo:
$install %py3_install
And
Requires: python3
This is not required and actually counterproductive. RPM will create automatic requirement on the specific Python version that is needed. Explore the built RPM with `rpm -qp --requires`.