I like making recordings too, but they are annoying to update/recreate when the expected output changes.
I found spielbash[1] recently which helps you automate asciinema recordings... though it was a bit broken and I ended up forking it and re-writing most of it [2] and adding a bunch of new features.
There's probably a way to merge the two ideas and have a way to automate live demos as well as have a mode that just spits out a asciinema recording.
I forked spielbash in order to add an option that lets it read `cloud-init`[1] YAML as input, and also noticed there were opportunities to improve the original. Will see if I can jump over to your fork.
