This is a very good point, that we haven't worked out a good solution to yet (it's a notoriously hard problem). A requirements.txt file would certainly help, but then that's the sort of thing you'd probably need to maintain yourself? Fully reproducible environments that can be run offline is a stretch goal of ours for the future though.

The 'reproducible' part that we mentioned was meant to refer to the fact that it's easily reproducible on DataJoy. I.e. if you share you work with a collaborator, you're not going to have any headaches around getting the scripts working on their system, installing the right packages again, etc.