Nixos

You have sent the message “it works on my machine” at least once in your career. Maybe you have been on the receiving end of it. Either way, the problem is always the same. Two machines that should be identical are not, and no one can say why. One has Python 3.11, the other has 3.12. One has a system OpenSSL that some C extension links against, and the other does not. One engineer installed a package six months ago and forgot.