> Matt knew that it would be years before the Python 3 port was either necessary or resulted in a meaningful return on investment (the value proposition of Python 3 has always been weak to Mercurial because Python 3 doesn't demonstrate a compelling advantage over Python 2 for our use case). What Matt was trying to do was minimize the externalized costs that a Python 3 port would inflict on the project. He correctly recognized that maintaining the existing product and supporting existing users was more important than a long-term bet in its infancy.

Having just done transitions on a number of much smaller projects I had the same thought. Changes to string handling tripped me up and the changes to relative imports took some thinking. But the biggest frustration was the nagging question: Why am I doing this?

edit: missing word

> Why am [I] doing this?

Lack of security updates past 2019 forced our hand. Did you find a way around that?

It's particularly uncool that Guido brought up the prospect of lawyers (https://github.com/naftaliharris/tauthon/issues/47#issuecomm...) to force it not to be called Python and opposed to letting people who care about keeping Python 2 alive evolve it as "Python 2". (I know he has the legal right to insist on the name change. Still uncool.)