Nethack 3.6 happened 8 years ago.

I've written the framework that allows multiple nethack versions to
coexist, but I think it might be time to retire nethack 3.4

So shout out to the nethack players: does anyone still have nethack 3.4
on-going games (or bonefiles they want to preserve) ?

I think we got a good rollover model going.

But is anyone still running on nethack 3.4 on the side ?

(now the derivatives, esp. the ones which might be a dead-end, are
going to be more tricky)