Many Rust libraries are shipped by distro package mangers, right now. But in general, those packages are intended to be used to build the Rust programs that are packaged in the distro, and not for general use. So it is going to be a painful way to try to write programs using Rust's ecosystem, as it is with basically every other non-C or C++ language.
It’s painful with c and c++ as well, the tool chain/libraries a distributor provides are almost never the ones you want to develop with as they are often ancient
