Unfortunately it looks like there isn't an easy way to fully exclude the window_run_return example for certain platforms, like mobile platforms that don't support EventLoop 2.0. The result is a compilation error when building all examples. I found that we can get it compiling by slapping cfg everywhere, but the result is a really ugly example.

Any better ideas on what to do here? The end goal is to be able to run cargo build --examples for all platforms without error.