Can't run eframe program on wayland.

[vol8]

Describe the bug
I am on NixOS using Wayland. I am trying to run a simple eframe demo. It builds but when I run the program, I get this error:
Error: WinitEventLoop(Os(OsError { line: 81, file: "/home/vol/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.30.5/src/platform_impl/linux/wayland/event_loop/mod.rs", error: WaylandError(Connection(NoWaylandLib)) }))

To Reproduce
Run this code:

use eframe::{egui, NativeOptions};

fn main() -> eframe::Result {
    eframe::run_native(
        "My egui App",
        NativeOptions::default(),
        Box::new(|cc| {
            Ok(Box::<MyApp>::default())
        }),
    )
}

#[derive(Default)]
struct MyApp {
}

impl eframe::App for MyApp {
    fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
        egui::CentralPanel::default().show(ctx, |ui| {
            ui.heading("My egui Application");
        });
    }
}

There was a guy that had a similar problem but his fix didn't help either.
#4528

[bircni]

Looks like this is a pure winit problem, so I suggest you report it in that repo instead and maybe link to the issue here

[AvinashPrajapati]

it is not the problem of the EGUI, it is problem of the WSL
issues #3413

[vol8]

it is not the problem of the EGUI, it is problem of the WSL issues #3413

How is that a WSL issue when I am not on Windows? I cannot be using WSL on NixOS.

[AvinashPrajapati]

it is not the problem of the EGUI, it is problem of the WSL issues #3413

How is that a WSL issue when I am not on Windows? I cannot be using WSL on NixOS.

you can enable Ozone Wayland support in Chromium and [Electron] based applications by setting the environment variable NIXOS_OZONE_WL=1. For example, in a configuration.nix

That is why i am saying.... there is problem with the support backup from the OS

[vol8]

it is not the problem of the EGUI, it is problem of the WSL issues #3413

How is that a WSL issue when I am not on Windows? I cannot be using WSL on NixOS.

you can enable Ozone Wayland support in Chromium and [Electron] based applications by setting the environment variable NIXOS_OZONE_WL=1. For example, in a configuration.nix

That is why i am saying.... there is problem with the support backup from the OS

First of all, sry I misunderstood you, I thought you were meaning the windows subsystem for linux lol

I have reported this issue to the winit repo and they said that I need to have libwayland installed.
With this I will close the issue because thats just what needs to be installed.
I'll just need a way to somehow link the libwayland into the Rust binary with something called rpath?
If anyone figures out how to use that, comment pls

[yassinebenarbia]

it is not the problem of the EGUI, it is problem of the WSL issues #3413

How is that a WSL issue when I am not on Windows? I cannot be using WSL on NixOS.

you can enable Ozone Wayland support in Chromium and [Electron] based applications by setting the environment variable NIXOS_OZONE_WL=1. For example, in a configuration.nix
That is why i am saying.... there is problem with the support backup from the OS

First of all, sry I misunderstood you, I thought you were meaning the windows subsystem for linux lol

I have reported this issue to the winit repo and they said that I need to have libwayland installed. With this I will close the issue because thats just what needs to be installed. I'll just need a way to somehow link the libwayland into the Rust binary with something called rpath? If anyone figures out how to use that, comment pls

I was able to get an eframe application to work on my NixOS machine by linking wayland, libxkbcommon and vulkane-loader to the compiled binary, via something like this on .cargo/config.toml

[build]
rustflags = ["-C", "link-arg=-Wl,-rpath,/nix/store/84839y8j0d4l4d3q048v00h20jdk9lh0-wayland-1.23.1/lib:/nix/store/pxww3rra041yadg758ii500kagr5l090-vulkan-loader-1.3.296.0/lib:/nix/store/i0d0ws5xwix1dvmwp8w1fr4kz61k11x4-libxkbcommon-1.7.0/lib:/nix/store/ymhcg6x5jrw3hx8ik1cji6awiybgp9f7-libglvnd-1.7.0/lib"]

for those "magic" paths, I got them by installing those packages and then nix eval nixpkgs#<package-name>.outPath (add /lib at the end), this is the code for the app that I've tested

fn main() {
    eframe::run_simple_native("hello", Default::default(), |ctx, _frame| {
        eframe::egui::CentralPanel::default().show(ctx, |ui| {
            ui.label("hello world");
        });
    })
    .unwrap();
}

and here's where I got my "inspiration" from

[vol8]

Ayyy nice. I will try this out and see if it works for me too!