You can easily call C libraries from languages like Go and Rust. It absolutely makes sense to write small libraries in C so that all kind of languages can use t

You can easily call C libraries from languages like Go and Rust. It absolutely makes sense to write small libraries in C so that all kind of languages can use the library which are not C. Go programs by default do not link against libc, so it would be nice not introducing the dependency. So this would fall under "nice to have".