build.rs

fn main() {
    println!("cargo:rerun-if-changed=build.rs");

    #[cfg(feature = "completions")]
    {
        println!("cargo:rerun-if-changed=src/cli.rs");
        generate_completions();
    }
}

#[cfg(feature = "completions")]
fn generate_completions() {
    use std::env;

    use clap_complete::{generate_to, Shell::Bash};

    use crate::cli::Cli;

    let outdir = match env::var_os("OUT_DIR") {
        None => return,
        Some(outdir) => outdir,
    };

    let mut cmd = Cli::build_cli();
    let path = generate_to(Bash, &mut cmd, "minilisp", outdir).unwrap();
    println!("cargo:warning=clap complete file generated at: {}", path.display());
}

#[cfg(feature = "completions")]
#[allow(dead_code)]
#[path = "src/cli.rs"]
mod cli;