Maybe I'm just spoiled in Python, but library devs in the Python ecosystem seem highly disciplined in this respect. Packages tend to be forward-compatible for y

Maybe I'm just spoiled in Python, but library devs in the Python ecosystem seem highly disciplined in this respect. Packages tend to be forward-compatible for years, even with very active development cycles, and breaking changes tend to be treated carefully and announced with plenty of advance warning. That said, I don't understand this mentality that libraries can never change. Eventually things need to change. It's impossible to predict all future requirements.