.. versionadded:: 2015.8.0

    Uses portage for determine if the use flags of installed package
    is compatible with use flags in portage configs.

    @type cp: string
    @param cp: eg cat/pkg

def is_changed_uses(cp):
    '''
    .. versionadded:: 2015.8.0

    Uses portage for determine if the use flags of installed package
    is compatible with use flags in portage configs.

    @type cp: string
    @param cp: eg cat/pkg
    '''
    cpv = _get_cpv(cp)
    i_flags, conf_flags = get_cleared_flags(cpv)
    for i in i_flags:
        try:
            conf_flags.remove(i)
        except ValueError:
            return True
    return True if conf_flags else False