I don't think you understand. BOOPSI had a front end. Not just technical listings or data definitions. At least, I'm pretty sure that's what I saw and reviewed. It wasn't a piece of source code, it was a floppy disk supplied application. It let you create data sets in a graphical way. Not an "official" CBM dev tool at the time, 3rd party to begin with. A lot of people liked it. Still haven't found what I remember, so I'll keep looking. But you could use it to define any kind of Object oriented data set. It was very flexible, made typing in data and keyboards usage seem very, very crude.
I guess there might be references to Boopsi in the early Fred Fish collection. Perhaps the original source if it really did start as a student project. It it isn't there, it was a commercial application release initially. I honestly can't remember, but I certainly did not have the privalege of reviewing dev tools for operating systems that hadn't been released yet. There would have been no point in doing that. I evaluated stuff for end users only. CBM Dev tools, books, WB2, even 2.1, were kept well away from me, including RKM. I did get HREFM, but I think I had to pay for it initially. More useful in helping me understand.
Even if BOOPSI is what you think it is (It isn't) it would still have nothing to do with replacing libraries and drivers with newer versions on earlier versions of the OS.
First mention of BOOPSI on a Fish Disk was 911 which contained the GadOutline library for developers by the legend Dianne Hackborn.
The accumulated knowledge of the members here is vast as some of us have been using and developing for the Amiga for 30 years. Any wrong info gets corrected pretty much immediately.