Required package rtl not found

[rlebeau]

The reason for the dual installation that some components I rely on are not yet available for Rio - but I only found that out once I had nearly finished installing everything else. So ten I started installing Tokyo as well

Even though the major versions of the IDE are separated, it is generally not a good idea to install an older version AFTER a newer version. You might need to uninstall both versions, then install Tokyo first, then Rio. Or, install one, or both, of them in separate VMs.