This is now resolved.
Apparently there was an issue in the codebase that wasn’t allowing the repository to be installed. I will likely need to figure out a more suitable fix in the installer itself.
All that’s needed is to run the installer. If there’s a problem, go to shell and run: (on ubuntu this is):
sudo apt-get update;sudo apt-get dist-upgrade
Confirm the pops if they come up as their defaulted selected item.
Re-run the installer and all should work.