Curious why I would use this over supervisord. It's a shame there's no comparison.
It's an aesthetic thing mainly, and a bit silly I'm sure, but dammit, I find it unsettling to have my Python 3 stuff running, and then the legacy Python 2, simply for the sake of supervisord.
Likewise, I don't need any Python on my Go-server, please.
I can see caring about performance. A Python process will be more memory hungry than something hand coded in C. But for the rest of it, who gives a crap if t is packaged well. And if it's not, it's probably not worth using it at all.
As I said, it's a question of aesthetics, and probably quite irrational, possibly OCD, but I do like my servers tight.