Nim is very nicel Not that it matters much in most cases, but the compiled binary sizes are also quite low compared to Rust.

Do you ever regret choosing "coffeescripter" as your handle? I loved CS and contributed to the CoffeeScript Redux compiler but the language is definitely pretty hated these days...

I wonder if there's any performance difference between Cython and Nim.

Nim is generally considered to be faster. Being statically typed allows more optimization. Nim is usually quite competitive with even pure C, especially if the C is non-trivial (e.g. has to do actual memory management)