Python cryptography, Rust, and Gentoo

> and or combining multiple Rust projects in one system (e.g., Linux/Mac OS X distributions).
It works just fine with multiple Rust projects and environments (see https://doc.rust-lang.org/edition-guide/rust-2018/rustup-... ). I have several Rust versions installed on my laptop side-by-side for tests and cross-compilation.

And the fact that you mention Windows/macOS is especially funny, because Rustup has native installers for them, making experimenting with them very easy.

And of course, Cargo makes sure that libraries don't interfere with each other, so each project gets its own dependency closure.