thanks for filing a bug report, but i'm going to need more info. What error are you seeing exactly.

@ogoffart

cargo build is can work, only editer software show err.

the include_modules uses an environment variable which is set through the slint-build crate that must be set in the build.rs. Do you call slint_build::compile in your build.rs. Maybe that is failing. There is perhaps logs from rust analyzer somewhere.

@ogoffart
I don't know why it's right again.
this my build.rs:

fn main() {
    embuild::espidf::sysenv::output();

    slint_build::compile_with_config(
        "ui/appwindow.slint",
        slint_build::CompilerConfiguration::new()
            .embed_resources(slint_build::EmbedResourcesKind::EmbedForSoftwareRenderer),
    )
    .unwrap();
}

right, so this should export the env variable used by the include_modules macro. run-analyzer should have run the build script. It is possible that it fails though. Maybe rust-analyzer has a log with the result of the build script.

@ogoffart
thanks!

Running the VS Code command palette command "Developer: Reload Window" fixed this for me.