Return all data directories for given package.

    Args:
        __pkg: Package name

def get_data_dirs(__pkg: str) -> List[str]:
    """Return all data directories for given package.

    Args:
        __pkg: Package name
    """
    dirs = [user_data(__pkg), ]
    dirs.extend(path.expanduser(path.sep.join([d, __pkg]))
                for d in getenv('XDG_DATA_DIRS',
                                '/usr/local/share/:/usr/share/').split(':'))
    return [d for d in dirs if path.isdir(d)]