nu-cmd-lang 0.111.0

Nushell's core language commands
Documentation 
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use std::process::Command;

fn main() {
    // Look up the current Git commit ourselves instead of relying on shadow_rs,
    // because shadow_rs does it in a really slow-to-compile way (it builds libgit2)
    // Allow overriding it with `NU_COMMIT_HASH` from outside, such as with nix.
    let hash = get_git_hash().unwrap_or(
        option_env!("NU_COMMIT_HASH")
            .unwrap_or_default()
            .to_string(),
    );
    println!("cargo:rustc-env=NU_COMMIT_HASH={hash}");
    shadow_rs::ShadowBuilder::builder()
        .build()
        .expect("shadow builder build should success");
}

fn get_git_hash() -> Option<String> {
    Command::new("git")
        .args(["rev-parse", "HEAD"])
        .output()
        .ok()
        .filter(|output| output.status.success())
        .and_then(|output| String::from_utf8(output.stdout).ok())
        .map(|hash| hash.trim().to_string())
}