To resolve it, launch the Visual Studio Installer and apply all available updates. (on Windows) thread 'main' panicked at 'Unable to find libclang: "couldn\'t find any v alid shared libraries matching: 9/src/platform_impl/linux/wayland/event_loop/mod.rs", error: WaylandError(Connection(NoCompositor)) }) (thread main, at ports/servoshell/desktop/cli.rs:34) 0: servoshell::backtrace::print at something like this: NixOS If you are on NixOS, you might get errors about pkg-config or crown : thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: "Could not run `PKG_CONFIG_ALLO