How can open-source projects sustain long-term community engagement?

Well, it kind of depends, you know like, sometimes the community just keeps going because people are interested, but other times it’s more about how things feel around the project. Some folks join, then leave, and new ones come in, so it sort of keeps moving, but not always in the same way. I think there’s something about having some kind of energy or vibe that keeps people coming back, though it’s not always clear what that is. It’s like you need structure, but also not too much, otherwise it stops being fun or something.