Function env_lock

crates/openshell-core/src/image.rs:56–59

()

    use std::sync::{Mutex, OnceLock};

    fn env_lock() -> &'static Mutex<()> {
        static ENV_LOCK: OnceLock<Mutex<()>> = OnceLock::new();
        ENV_LOCK.get_or_init(|| Mutex::new(()))
    }

    #[test]
    fn bare_name_expands_to_community_registry() {