Setup python3 and pip3.
- Default Variables
The default packages depend on the OS version. For RHEL7 based systems, Python3.8 from SCL
centos-sclo-rh. Therefore, the SCL need to be installed and enabled already! For RHEL8 based system Python3.9 will be installed from the Appstream repo.
Optional list of old Pathon packages that should be removed.