#!/usr/bin/env python3
"""Keep verify's Rust steps for any change beyond documentation."""

import argparse
import subprocess


def needs_rust(paths):
    return any(not (path.startswith("docs/") or path.endswith(".md")) for path in paths)


def changed_paths(base, head):
    # Renames must include deletions too: moving source into docs still affects Rust.
    output = subprocess.check_output([
        "git", "diff", "--name-only", "--no-renames", "-z", f"{base}...{head}", "--",
    ])
    return [path for path in output.decode("utf-8").split("\0") if path]


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("base")
    parser.add_argument("head")
    args = parser.parse_args()
    print(f"required={str(needs_rust(changed_paths(args.base, args.head))).lower()}")