get_version_with_hash.rs

use std::process::Command;

const VERSION: Option<&'static str> = option_env!("CARGO_PKG_VERSION");

fn main() {
    println!("Hello, world!");
    println!("version: {}", VERSION.unwrap_or("dev"));

    let output = Command::new("git")
        .args(&["rev-parse", "HEAD"])
        .output().unwrap();
    let git_hash = String::from_utf8(output.stdout).unwrap();
    println!("Git hash: {}", git_hash)
}