flatpak support - Enhancement

[stavpup]

Flatpak is a software utility for software deployment, package management, and application virtualization for Linux desktop computers.

https://flatpak.org/

It provides a sandbox environment in which users can run applications in isolation from the rest of the system.

[NagyD]

Is this "Flatpak" similar to "Snap"?
A Princed user called "popey" posted a Snap package here: http://forum.princed.org/viewtopic.php?p=23242#p23242

[stavpup]

yes https://en.wikipedia.org/wiki/Flatpak

[tinywrkb]

Here is another Flatpak packaging.

Notable differences from the other example:

• No need for extra modules/libs, the runtime seems to have everything needed.
• Use of /var/{config,data} folder that are bind-mount target for the appropriate XDG dirs.

Not tested and likely broken:

• Auto-detection of gamepads. Probably will require bind mounting the udev database. Maybe could be avoided if SDL2 will support the Device Portal.
• Saving/loading.