[fabioz]

Well, whenever you add threads to the mix (native or virtual threads) if you don't design for it, I don't think things pan out properly (but I guess that I agree that if someone designed with native threads going for virtual threads where the same APIs can now make IO async switch threads it's probably easier to go that route).

I must say that the main usage I personally had of greenlets didn't have it in mind initially (it was used in an existing application where making the coloring wasn't really feasible as it was a huge app already and adopting green threads was much less work).