The main reason is that Dbus is not available during early stages of boot. There are many others.

Varlink seems to be better or the same compared to dbus in all except two things:

• json doesn’t handle 64bit integers, it handles 52bit (or 54bit?) (size of mantissa for floats)
• you cannot (yet) list all things connected to the bus

Details here:

https://media.ccc.de/v/all-systems-go-2024-276-varlink-now-

This looks awesome.

Looks like it could be a very good alternative to mutter and kwin.

Questions:

• what about Vulkan instead GL? Should be more performant and use less battery. Especially if it is meant to also work on mobile.
• is Louvre drawing those window decorations?
• there is some overlap with https://github.com/winft/theseus-ship - any idea for a collaboration there?
• there seems to be a company behind, while I didn’t investigate, are there plans for further development that you would publish, is there a way to influence those plans (suggestions, donations, some other way)
• any plans to make a shell around it?
• it is mentioned that this is a library, but obviously there is a working compositor. Regardless if this is a technology demonstrator, would it be possible to publish a compositor with decent theming and a few distinct layer modes (classic windows with taskbar, windows 8 like, Mac, gnome, ubuntu). I guess many smaller Linux DEs would consider it then…
• how does it compare to kwin/mutter?

Microsoft employee.