fyi, last week, 2 modules had updates, but would not update because i did not have pm2 installed. (i am running rc1.8) after seeing this post
I followed the directions to manually install pm2 and then the modules updated fine. so, i don’t understand your statement that modules are not updated post install or that sng7 does not use pm2. maybe sng7 core does not, but 2 modules do. (sorry, i cannot remember which 2)