Function options_snapshot

mypy/build.py:1974–1990

Make compact snapshot of options for a module. Separately store only the options we may compare individually, and take a hash of everything else. If --debug-cache is specified, fall back to full snapshot.

(id: str, manager: BuildManager)

def options_snapshot(id: str, manager: BuildManager) -> dict[str, object]:
    """Make compact snapshot of options for a module.

    Separately store only the options we may compare individually, and take a hash
    of everything else. If --debug-cache is specified, fall back to full snapshot.
    """
    platform_opt, values = manager.options.clone_for_module(id).select_options_affecting_cache()
    if manager.options.debug_cache:
        # Build full options snapshot for debugging purposes.
        result: dict[str, object] = {"platform": platform_opt}
        for key, val in zip(OPTIONS_AFFECTING_CACHE_NO_PLATFORM, values):
            result[key] = val
        return result
    # Process most options quickly, since this is performance critical.
    buf = WriteBuffer()
    write_json_value(buf, cast(JsonValue, values))
    return {"platform": platform_opt, "other_options": hash_digest(buf.getvalue())}


def find_cache_meta(