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Also all tiling window managers will need to be rewritten from scratch basically as Wayland's architecture is very different, which sucks.

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It's worse than that. Window managers simply cannot exist in Wayland, because the compositor is the only actor which can also do window management.

This coupling is one of the biggest design faults of Wayland. The platform-specific functionality is no longer encapsulated in a stand-alone piece of software - the compositor now must do everything, because Wayland trusts only it to do anything privileged. This leads to less choice and more restrictions. If you wanted to get X11 running on e.g. your phone, you would get the Xorg server Android app, then run the window manager you want, then run the applications you want. This is not possible in Wayland: there would need to be one per-platform app per compositor / window manager, so you would need e.g. Weston for Linux, Weston for Android, Weston for iOS, sway for Linux, sway for Android, sway for iOS, ...

For this exact reason I think we're going to see a lot more development of DE-specific tiling window management solutions, like Pop Shell, PaperWM, Material Shell, etc., are doing for Gnome. They all just leverage the Gnome Shell extension system, but are inextricably dependent on Gnome.

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