with glutin: provided display handle is not supported

[poperigby]

Bug Description

When attempting to run my GUI with cargo run -- gui, I get the following error:

thread 'main' panicked at src/gui.rs:11:15:
called `Result::unwrap()` on an `Err` value: Error creating OpenGL display (Ok(DisplayHandle(Wayland(WaylandDisplayHandle { display: 0x5624a8fd2230 })))) with glutin: provided display handle is not supported
stack backtrace:
   0: __rustc::rust_begin_unwind
   1: core::panicking::panic_fmt
   2: core::result::unwrap_failed
   3: core::result::Result<T,E>::unwrap
             at /build/rustc-1.87.0-src/library/core/src/result.rs:1109:23
   4: barnacle::gui::start_gui
             at ./src/gui.rs:11:5
   5: barnacle::main
             at ./src/main.rs:126:13
   6: core::ops::function::FnOnce::call_once
             at /build/rustc-1.87.0-src/library/core/src/ops/function.rs:250:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

If I use the software backend, it launches successfully.

Here is my code: https://github.com/poperigby/barnacle/

Environment Details

• Slint Version: 1.12.1
• Platform/OS: NixOS
• Programming Language: Rust
• Backend/Renderer: winit/femtovg

Product Impact

I can't run the GUI with this issue.

[tronical]

This error message indicates that your EGL library is missing support for EGL_KHR_platform_wayland. I'm 99% certain that this is due to a missing dependency in your flake.nix. Unfortunately I'm to knowledgable enough about Nix to be able to answer what exactly is missing. I'm going to convert this into a discussion, perhaps somebody from the community knows the answer :-)

[poperigby]

Updating my nixpkgs version seems to have fixed it. Must have been a bug upstream that screwed things up. Thanks!