Function tugger_rust_toolchain::install_rust_toolchain

pub fn install_rust_toolchain(
    toolchain: &str,
    host_triple: &str,
    extra_target_triples: &[&str],
    install_root_dir: &Path,
    download_cache_dir: Option<&Path>
) -> Result<InstalledToolchain>

Install a functional Rust toolchain capable of running on and building for a target triple.

This is a convenience method for fetching the packages that compose a minimal Rust installation capable of compiling.

host_triple denotes the host triple of the toolchain to fetch. extra_target_triples denotes extra triples for targets we are building for.