#!/usr/bin/env python3
"""Read the canonical RustProxy release version from Cargo.toml."""
from pathlib import Path
import sys
import tomllib


def project_version(root: Path | None = None) -> str:
    manifest = (root or Path(__file__).resolve().parents[1]) / "Cargo.toml"
    data = tomllib.loads(manifest.read_text(encoding="utf-8"))
    return data["package"]["version"]


if __name__ == "__main__":
    print(project_version(Path(sys.argv[1]) if len(sys.argv) > 1 else None))