Here’s my source. I’m porting Linux From Scratch to Fil-C
There is load bearing stuff in there that I’d never think of off the top of my head that I can assure you works just as well even with the Fil-C tax. Like I can’t tell the difference and don’t care that it is technically using more CPU and memory.
So then you’ve got to wonder, why aren’t those things written in JavaScript, or Python, or Java, or Haskell? And if you look inside you just see really complex syscall usage. Not for perf but for correctness. It code that would be zero fun to try to write in anything other than C or C++