[vaylian]

There is no sha-256 in the C or C++ standard library either. A cryptographic hashing algorithm like sha-256 is not something that necessarily has to be in a standard library.

There's plenty of old modules in the Python standard library that hardly any one uses. But removing them would break backwards compatibility guarantees. The Rust project has decided that they want to keep the standard library lean. And this works well in practise, because cargo is a really good package manager.