fn main() {
let hash = std::process::Command::new("git")
.args(["rev-parse", "--short", "HEAD"])
.output()
.ok()
.filter(|output| output.status.success())
.map(|output| String::from_utf8_lossy(&output.stdout).trim().to_string())
.unwrap_or_else(|| "unknown".to_string());
println!("cargo:rustc-env=GIT_HASH={hash}");
}