But isn’t appimage the closest one to the app-system from Android? Since things could be really different on many clients an “app-container” is the best solution.
Why not containerise everything? You need libreoffice? No problem, here is a docker or podman container.
BTW. I like flatpak, too. It’s the most stable, but I never understand it’s mechanics. There is always another pack installed, freecode, gtk, qt whatever. Even if the system has already the correct gtk version, nope, the dev decided to use the gtk image from Ubuntu.
Why not containerise everything? You need libreoffice? No problem, here is a docker or podman container.
Flatpak is basically GUI-optimized containers. It uses the same technology (namespaces) as docker and podman, just with some extra tools to make GUI-related things work properly. That’s why flatpak apps don’t use the system’s gtk version – they’re running in a sandbox with a different rootfs. You can spawn a shell into the sandbox of a specific app with flatpak run --command=sh com.yourapp.YourApp and poke around it if you want to.