skippy-protocol 0.75.0

Wire protocol types for Skippy staged runtime serving
Documentation 
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use std::fs;
use std::path::Path;

fn main() {
    watch_path(Path::new("proto"));
    compile_proto();
}

fn watch_path(path: &Path) {
    println!("cargo:rerun-if-changed={}", path.display());

    let Ok(meta) = fs::metadata(path) else {
        return;
    };

    if meta.is_dir() {
        let Ok(entries) = fs::read_dir(path) else {
            return;
        };
        for entry in entries.flatten() {
            watch_path(&entry.path());
        }
    }
}

fn compile_proto() {
    let protoc = protoc_bin_vendored::protoc_bin_path().expect("vendored protoc");
    // TODO: Audit that the environment access only happens in single-threaded code.
    unsafe { std::env::set_var("PROTOC", protoc) };

    prost_build::Config::new()
        .compile_protos(&["proto/stage.proto"], &["proto"])
        .expect("compile skippy stage proto");
}