xpile 0.1.1

Polyglot transpile workbench (Python/C/C++/Rust/Ruchy/Lean ↔ Rust/Ruchy/PTX/WGSL/SPIR-V) with provable contracts at every layer.
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def fib(n: int) -> int:
    return n if n <= 1 else fib(n - 1) + fib(n - 2)