def __virtual__():
    if __grains__.get('os_family', False) in ('Kali', 'Debian'):
        return __virtualname__
    return (False, 'The debbuild module could not be loaded: unsupported OS family')
Confirm this module is on a Debian based system
dataset/ETHPy150Open saltstack/salt/salt/modules/debbuild.py/__virtual__