Basically, the same way as I can set up a push webhook for a Github repo, can I set it up for a Github gist? I looked around, and I suspect not since there's no documentation for it.
If it is impossible, is there anyway to get notifications whenever a gist is updated? If not, I'm ready to implement a solution that polls every few minutes, but I prefer the notification based solution.
Well, I confirmed it for myself. Github doesn't allow any kind of code to be run on its server's during/before/after a push, so it has webhooks for developers to take advantage of that. Gist does not support either actual Git hooks or Github webhooks.