def is_vanilla() -> bool:
    import sys
    return not hasattr(__builtins__, '__IPYTHON__') and 'bpython' not in sys.argv[0]


def setup_history():
    import os
    import atexit
    import readline
    from pathlib import Path

    if state_home := os.environ.get('XDG_STATE_HOME'):
        state_home = Path(state_home)
    else:
        state_home = Path.home() / '.local' / 'state'

    history: Path = state_home / 'python_history'

    readline.read_history_file(str(history))
    atexit.register(readline.write_history_file, str(history))


if is_vanilla():
    setup_history()
