rustup-toolchain-manifest 0.2.2

#![allow(clippy::uninlined_format_args)]

use clap::Parser;
use rustup_toolchain_manifest::{InstallSpec, Manifest, Toolchain};
use std::path::PathBuf;
use std::str::FromStr;
use target_lexicon::Triple;

#[derive(Debug, Parser)]
#[clap(author, version)]
struct Cli {
    /// Input file
    input_file: PathBuf,
}

fn main() {
    let cli = Cli::parse();
    let input_file = cli.input_file;
    let content = std::fs::read_to_string(input_file).expect("Failed to read input file");
    let manifest = Manifest::try_from(content.as_str()).expect("Failed to parse manifest");
    let spec = InstallSpec {
        profile: "minimal".into(),
        components: ["clippy", "rust-src"].into_iter().map(String::from).collect(),
        targets: ["wasm32-unknown-unknown"].into_iter().map(String::from).collect(),
    };
    let host = Triple::from_str("x86_64-unknown-linux-gnu").expect("Failed to parse triple");
    println!("For target {}, finding the following toolchain:\n{:#?}", host, spec);
    println!();
    let packages = manifest
        .find_packages_for_install(&host, &spec)
        .expect("Failed to resolve install specification");
    println!("Packages:\n{:#?}", packages);

    let downloads = manifest
        .find_downloads_for_install(&host, &spec)
        .expect("Failed to resolve downloads for install specification");
    println!("Downloads:\n{:#?}", downloads);

    let toolchain =
        Toolchain::from_str("nightly-2022-11-30-x86_64-pc-windows-msvc").expect("Unable to parse toolchain");
    println!("Toolchain: {}", toolchain);
    println!("Toolchain manifest: {}", toolchain.manifest_url());
}