use std::fs::metadata; fn main() { let frontend_dir = format!("{}/../frontend/dist", env!("CARGO_MANIFEST_DIR")); metadata(&frontend_dir).expect("Failed to find frontend directory. Please build the frontend first."); metadata(format!("{}/index.html", &frontend_dir)).expect("Failed to find index.html in frontend directory."); println!("cargo:rerun-if-changed=."); println!("cargo:rerun-if-changed=../frontend/dist"); }