>>| upd (\(r,s,ss)->(r,s,True)) (channels d)
>>| maybe (treturn ()) (flip removeTask topLevelTasks) d.deviceTask
>>| upd (filter ((<>)d)) deviceStore
>>| upd (\(r,s,ss)->(r,s,True)) (channels d)
>>| maybe (treturn ()) (flip removeTask topLevelTasks) d.deviceTask
>>| upd (filter ((<>)d)) deviceStore