@notptr yeah, my game of trees habit introduces so much extraneous exposition, I should just keep it or at most drop in a link to https://gameoftrees.org/index.html.
Yukari's deploy?
https://40ants.com/lisp-project-of-the-day/2020/04/0037-deploy.html
though from what I can see here, you end up having the long :components listing in the defsystem I prefer to have inferred. I guess 40ants also uses :class :package-inferred-system normally.