NoGlutinConfigs() error under Wayland?

[barries]

I'm trying to run a very simple egui/eframe UI (basically ui.label("Hello World!")) on a Wayland system using the weston compositor in drm mode, and getting a NoGlutinConfigs() error with a template Debug output dump.

Setting RUST_LOG=TRACE shows eframe logging trying to create glutin Display with config: ..., but does not show the debug!("using the first config from config picker closure. config: {config:?}") message, so I'm guessing that there are no matching configs for it to iterate over.

glutin-winit and glutin don't emit any debug info, nor does glutin-winit document what it's looking for under Wayland (i.e. what configs might exist), or what prerequisites (ENV vars, libraries, whatever) are needed under Wayland as far as I can tell.

Other apps, like wayland-terminal work fine, so this is probably something specific to glutin or glutin-winit or winit, but I don't have any idea how to proceed. I'll ask in the glutin-winit repo too, but I suspect there are folks here that might have knowledge and not normally watching issues in that repo.

Does anyone here have any idea how to debug this?

Has anyone here resolved something like this before?

Thanks!