use std::process::Command;
fn main() {
let sha = Command::new("git")
.args(["rev-parse", "--short", "HEAD"])
.output()
.map(|o| String::from_utf8_lossy(&o.stdout).trim().to_string())
.unwrap_or_else(|_| "unknown".into());
println!("cargo:rustc-env=GIT_SHA={sha}");
println!("cargo:rerun-if-changed=.git/HEAD");
}