"""Corpus location is independent of the installed Python package."""

import os
from pathlib import Path


def infospace_root(root: Path | str | None = None) -> Path:
    if root:
        return Path(root).resolve()
    if os.environ.get("INFO_TECH_CANON_ROOT"):
        return Path(os.environ["INFO_TECH_CANON_ROOT"]).resolve()
    local = Path.cwd() / "infospace"
    if local.is_dir():
        return local.resolve()
    return Path(__file__).resolve().parents[2] / "infospace"