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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

import os


def get_state_dir():
    """Obtain path to a directory to hold state.

    Returns a tuple of the path and a bool indicating whether the
    value came from an environment variable.
    """
    state_user_dir = os.path.expanduser('~/.mozbuild')
    state_env_dir = os.environ.get('MOZBUILD_STATE_PATH')

    if state_env_dir:
        return state_env_dir, True
    else:
        return state_user_dir, False