>>35
Lisps get extended all the time and are never the original lisp, scheme implementations aren't pure either, wouldn't be that hard for scheme like the srfis and r*rs is. Infact just add inline assembly, garbage control, syscall and types srfis. Tweak any of the lisp image to assembly transplitters out there and write the os https://3lproject.org/in-depth#PreScheme .
Picolisp also did something https://picolisp.com/wiki/?PilOS .