RPython, the toolchain which is used to build JIT compilers like PyPy, supports Windows and non-Windows interpretations of standard Python int. This leads to an entire module's worth of specialized arithmetic. In RPython, the usual approach to handling the size of ints is to immediately stop worrying about it and let the compiler tell you if you got it wrong; an int will have at least seven-ish bits but anything more is platform-specific. This is one of the few systems I've used where I have to cast from an int to an int because the compiler can't prove that the ints are the same size and might need a runtime cast, but it can't tell me whether it does need the runtime cast.
Of course, I don't expect you to accept this example, given what a whiner you've been down-thread, but at least you can't claim that nobody showed you anything.