Flatpak Lubuntu 21.10 Installation – Step-by-step

Installing

2. 2. Enabling Repo

   Then to Add Flatpak Repository for Lubuntu
   Execute:

   sudo add-apt-repository ppa:alexlarsson/flatpak

   And if you Get a Missing Repo Issue then Amend it Manually with:

   sudo nano /etc/apt/sources.list.d/*flatpak*.list

   Changing ‘impish’ in ‘focal’!
   Ctrl+x to Save & Exit from nano Editor.
   And then to Refresh Apt Repos Lubuntu:

   sudo apt update

3. 3. Installing Flatpak

   Finally, to Install Flatpak for Lubuntu Impish
   Simply play:

   sudo apt install flatpak