<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def pkgdb(opts):
    '''
    Return modules for SPM's package database

    .. versionadded:: 2015.8.0
    '''
    return LazyLoader(
        _module_dirs(
            opts,
            'pkgdb',
            base_path=os.path.join(SALT_BASE_PATH, 'spm')
        ),
        opts,
        tag='pkgdb'
    )