The latest beta of Android 16 has a Linux terminal that can run graphical Linux apps. When it fully releases in Q2 2025, would flathub/flatpaks be feasible?
Maybe, Maybe not.
I think the big question is how much of a mainline Linux environment it provides. Flatpak does rely on quite a few low-level system features like namespaces, cgroups from SystemD, etc. to set up its sandbox and interoperability features. Under the Hood - Flatpak documentation shows a bit of what underlying technology would need to work.
I haven’t looked at what Androids Linux Terminal is supposed to bring, so I can’t say what it all will provide. But it could very likely be that it will not provide things like SystemD or dbus.
read into it, apparently it’s based off debian
Well, WSL 1 was based on Ubuntu. But it couldn’t run Flatpak because it lacked certain necessary system components …
What I want to say is that the important part is checking if the prerequisites for the work of Flatpak can run in that environment, which are the ones mentioned in Under the Hood - Flatpak documentation, probably a few more dependencies, a XDG desktop portal implementation, and a window server, ideally using Wayland.