use rand::distributions::Alphanumeric; use rand::Rng; use vergen::{generate_cargo_keys, ConstantsFlags}; fn main() { let mut flags = ConstantsFlags::all(); flags.toggle(ConstantsFlags::REBUILD_ON_HEAD_CHANGE); generate_cargo_keys(ConstantsFlags::all()).expect("Unable to generate the cargo keys!"); let build_id: String = rand::thread_rng() .sample_iter(Alphanumeric) .take(8) .map(char::from) .collect(); println!("cargo:rustc-env=LIBRESPOT_BUILD_ID={}", build_id); }