Yeah also cargo has some C dependencies. It uses curl to download stuff from the network, openssl for TLS connections (at least on linux), and libgit2 to clone

Yeah also cargo has some C dependencies. It uses curl to download stuff from the network, openssl for TLS connections (at least on linux), and libgit2 to clone git repositories, both needed for crates.io downloads (registry is a git repo) as well as for git dependencies in Cargo.toml. But I think the progress is still very important. It shows that Rust can do basically anything. Also, for the c dependencies Cargo uses, rust rewrites exist. reqwest, rustls, and various (currently highly immature) pure-rust git libraries like gitoxide/https://github.com/chrisdickinson/git-rs https://github.com/chrisdickinson/git-rs.