usestd::env;usestd::fs;usestd::io::Write;usestd::path::Path;fnmain(){// Use the current time and a random value for demonstration (replace with real metadata if needed)
let hash =format!("{}-{}",chrono::Utc::now().timestamp(),rand::random::<u64>());println!("cargo:rustc-env=RUSTMORPHISM_BUILD_HASH={}", hash);}