nix shell in DEPENDENCIES.md does not work with wayland

[henrispriet]

Is there an existing issue for this?

• I have searched the existing issues.

Is this issue related to iced?

• My hardware is compatible and my graphics drivers are up-to-date.

What happened?

1. cargo init
2. cargo add iced
3. copy shell.nix from DEPENDENCIES.md
4. nix-shell
5. write a minimal hello world app:

// src/main.rs

use iced::{Application, Element, Sandbox};
use iced::widget::text;

struct App;

#[derive(Debug)]
enum Message {}

impl Sandbox for App {

    type Message = Message;

    fn new() -> Self {
        Self
    }

    fn title(&self) -> String {
        "Hello World!".to_string()
    }

    fn update(&mut self, _message: Self::Message) {}

    fn view(&self) -> Element<'_, Self::Message> {
        text("Hello World!").into()
    }
}

fn main() -> iced::Result {
    <App as Application>::run(Default::default())
}

7. cargo run gives the following output:

    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
     Running `target/debug/iced-app`
thread 'main' panicked at /home/henri/.cargo/registry/src/index.crates.io-6f17d22bba15001f/iced_winit-0.12.2/src/application.rs:119:10:
Create event loop: Os(OsError { line: 80, file: "/home/henri/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.29.15/src/platform_impl/linux/wayland/event_loop/mod.rs", error: WaylandError(Connection(NoWaylandLib)) })
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

What is the expected behavior?

The expected behaviour is that the hello world example runs

Version

crates.io release

Operating System

Linux

Do you have any log output?

No response