Installing
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2. Installing Flatpak
Setup Strongly Recommended to Install Updated Flatpak Release
Backports Debian Buster/Stretch Setup GuidePossibly, follow the instructions to Enable the ‘contrib‘ and ‘non-free‘ Sources.
And then play:sudo apt install flatpak
Authenticate with the User Admin Pass.
If Got “User is Not in Sudoers file” then see: How to Enable sudo.
Again for the GNOME Desktop integration run:sudo apt install gnome-software-plugin-flatpak
And with this latest setup on GNOME based you’ll be able to Install Flatpak Apps just Double-clicking on the downloaded flatpakref App File.
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