Asking users to install flatpaks on first boot

What is the thing called when you first boot your new install of a custom image where the dialog box asks you whether you want to install certain packages? And then the thing downloads your selected packages from Flathub? Is that a portal?

I want to pitch this to Fedora so that when users first boot they can get easy access to apps that normally come with a distro that’s using their selected desktop environment OR apps that you expect to have preinstalled in general like LibreOffice. Maybe you can even have a pre-selected “desktop suite” of apps that pulls down all of the apps that are missing from the atomic variant of the mainline spin?

Yafti, I’m pretty certain.

Yafti is currently unmaintained so if you have a friend that knows Python we could use a hand! (Or if you’re reading this, dive in!)