this post was submitted on 14 Jan 2024
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X11 is an multiple decade old dinosaur, the developer decided it was growing too complex and no longer representing how graphics are done on modern systems and decided a rewrite. While doing so they decided to simplify some things along the way and in doing so they drastically overshoot their target and removed tons of fundamental functions that was present in X11 (stuff like being able to take screenshots, window manager, etc.). Some of that is slowly getting reimplemented and Wayland is getting closer to actually being a feature-parity X11 replacement, but it's also taken 15 years and is still not done. The whole drama is the conflict between people wanting it as default and the other group of people for which it simply doesn't work in its current state.
That is partly correct. Wayland is not based on X.org. There is nothing rewritten, removed or simplified. It's an entirely new design, new code with a different license. And X11 isn't written by a single developer. XFree86 was started by 3 people, got maintained by an incorporated and then became X.org and sponsored by an industry consortium (the X.Org Foundation). Many many people and companies contributed. The rest is correct. It grew too complex and maintenance is a hassle. Wayland simplifies things and is a state of the art approach. Nobody removed features but they started from zero so it took a while to implement all important features. As of today we're almost there and Wayland is close to replacing X11.
I don’t know that I would say that Wayland is not based on X11. It is a rewrite, not a fork but it is the next chapter of a common history.
Wayland and Xorg do share a lot of code in a way. Libraries like libinput, libdrm, KMS, and Mesa are used by both.
I think @elauso@feddit.de did a better job explaining it... It's a rewrite if you're trying to create the same product as before. And that's not what Wayland is trying to do.
I mean we also don't say a car is a rewrite of a train (or vice versa) but they share some of the same components (wheels, seats, a driver...) And libinput, drm, mesa aren't copied to the source code. They're seperate projects and components/libraries that are used via an interface that makes them reusable. Lots of other projects also use the same set of libraries. For example networking. Or games that are built with the same game engine.