Well, as the description says, flatjak is a little bash script that installs Flatpak with necessary software center and desktop integrations & enables the all important Flathub repository in Ubuntu & its derivatives. flatjak should work fine on Debian and other Debian based distributions too.
All official flavors of Ubuntu will stop including Flatpak by default from version 23.04 (Lunar Lobster) onward. Here is an excerpt from Canonical's announcement on this subject,
As part of our combined efforts, the Ubuntu flavors have made a joint decision to adjust some of the default packages on Ubuntu: Going forward, the Flatpak package as well as the packages to integrate Flatpak into the respective software center will no longer be installed by default in the next release due in April 2023, Lunar Lobster.
Installing the flatpak package in any Ubuntu based distribution is relatively straight forward but installing Flatpak with necessary software center and desktop integrations can be tricky for many users. flatjak makes this task as easy as possible, even for new users. flatjak also enables the all important Flathub repository.
It's easy-peasy to install flatjak. Just download the flatjak-main zip, extract its contents and copy the file flatjak to /usr/local/bin/ directory,
sudo cp flatjak /usr/local/bin/And make it executable,
sudo chmod 755 /usr/local/bin/flatjakUsing flatjak is even simpler, all you need to do is open a terminal emulator and run,
sudo flatjakflatjak will install Flatpak with all the bells and whistles for you.
If you liked flatjak, please consider supporting it, even the smallest contribution goes a long way. It is quick & easy via PayPal, Buy Me a Coffee, Liberapay or Stripe:
This work (flatjak, by hakerdefo), identified by hakerdefo, is free of known copyright restrictions.
