Comment by ChristopherDrum

Yeah, the "porting" part was pretty trivial, all things considered. Any difficulty was really only as a consequence of certain patterns being unfamiliar or evolved. Once those patterns were identified, it was only "roll up your sleeves and do the work" to get it going again.

Working on this kind of got me re-thinking my approach to my personal projects again. What can I do today to best ensure my own code will be this easy to run in 30 years? As a corollary to that, what can I build today that will be interesting enough to want to run again in 30 years?