use std::process::Command;

fn get_git_hash() -> Option<String> {
    let output = Command::new("git")
        .args(&["rev-parse", "--short", "HEAD"])
        .output()
        .ok()?;
    String::from_utf8(output.stdout).ok()
}

fn main() {
    if let Some(hash) = get_git_hash() {
        println!("cargo:rustc-env=GIT_HASH={}", hash);
    }
}