Forget zbus, zlink is the future of IPC in Rust (asg2025)

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Last year, Lennart Poettering of the systemd fame, [gave a presentation](https://media.ccc.de/v/all-systems-go-2024-276-varlink-now-) at this very same conference, where he introduced Varlink, a modern yet simple IPC mechanism. He presented a case for Varlink, rather than [D-Bus](https://en.wikipedia.org/wiki/D-Bus) to be the future of Inter-process communication on Linux. As someone who works on D-Bus, I took upon myself to prove him wrong, only to find out that I achieved exactly the opposite. It didn't take long before I got convinced of his vision. Since I was largely responsible for giving the world [an easy to use D-Bus Rust library](https://crates.io/crates/zbus), I thought it's only fitting that I do the same for Varlink. This talk will be the story of the creation of such a library, the challenges I faced, where Varlink fits the Rust idioms really well and where it does not and how all of this affected the development and the API. Licensed to the public under https://creativecommons.org/licenses/by/4.0/de/ about this event: https://cfp.all-systems-go.io/all-systems-go-2025/talk/SYGBNH/