"""Ensure ``build/`` is importable as the root for ``common``, ``wheel``, and ``gui``."""

from __future__ import annotations

import sys
from pathlib import Path

_BUILD_ROOT = Path(__file__).resolve().parents[1]


def ensure_build_root_on_path() -> Path:
    root = str(_BUILD_ROOT)
    if root not in sys.path:
        sys.path.insert(0, root)
    return _BUILD_ROOT