Oh, I was describing the nature of build.rs files as script-y, rather than Rust itself. :-) Here's a very simple one: https://github.com/alexcrichton/brotli2-r

Oh, I was describing the nature of build.rs files as script-y, rather than Rust itself. :-) Here's a very simple one: https://github.com/alexcrichton/brotli2-rs/blob/master/brotli-sys/build.rs https://github.com/alexcrichton/brotli2-rs/blob/master/brotl... Here's one with much more complicated requirements: https://github.com/sfackler/rust-openssl/blob/master/openssl-sys/build/main.rs https://github.com/sfackler/rust-openssl/blob/master/openssl...