How to track a generated file in build.rs

I generate a file in build.rs using OUT_DIR env and I want to see the result to be able to better understand what is generated.

The only way I found is to search in target dir the file, but if for example I add a dependencies, the build uuid change and so that not the same file anymore.

Would it be possible to track down the "most recent" version of the generate file ? I guess it could be hard.

The way I see it would be able to ask rust-analyzer the result of include!(concat!(env!("OUT_DIR"), "/foo.rs")); or somehow be able to config the IDE to open the file "$OUT_DIR/foo.rs into a window where OUT_DIR can change.

Maybe using print it in build.rs like:

println!("rust-analyzer:generated=foo.rs");

The could allow hint rust-analyzer such file have been generated.

If anyone know a nice solution I would be please to know it.

Start with the build.rs workflow and the OUT_DIR path used by include!(concat!(env!("OUT_DIR"), "/foo.rs")). The issue names no implementation file or test, so first determine how rust-analyzer discovers generated files and whether a stable way to track the most recent output can be defined; done means the generated file remains discoverable when build UUIDs change.