I think this is mostly due to the 1.x guarantee that anything old will compile on anything new. I don’t know if Python or others formalized the same guarantee,

I think this is mostly due to the 1.x guarantee that anything old will compile on anything new. I don’t know if Python or others formalized the same guarantee, but I don’t remember any issues 2.2 - 2.15.x (of course 2-3 is infamous). However 3.3+ (when I joined the py3 crew from py2) I don’t recall any either. My experience with Go has been equally pleasant (though it does require more boilerplate for commonly accepted reasons in the community), but in no way unique.