This dedicates at least as much time to discussing the eccentricities of the underlying Rust implementation (and the Rust language itself) as it does to discussing the underlying low-level hardware/software concepts. Since this is very much still a work-in-progress (only the first three sections have been fully fleshed-out), I have a suggestion to make: please make it more language-agnostic, with a greater focus on the fundamentals versus the implementation.
One of the hardest parts of writing an os is learning and understanding how to make the toolchain work the way you need it to. I wouldn't consider that a negative to spend time discussing it in such detail. Otherwise you have no idea how to even apply the high level concepts.
Why always POSIX compliant? If its going to be a learning exercise or a hobby OS or just an exploration, why not throw POSIX out the window and start from scratch for designing the API?
This is an ambitious project. Might I respectfully suggest that you use your favourite AI (or an English-speaking friend) to fix your many grammatical errors and typos? For example "Note: ALL the syntax highlighting of the Rust code is custom and create by me! If you see and bug, please write in the comments or submit an issue." should be
"Note: ALL the syntax highlighting of the Rust code is custom and was created by me! If you see a bug, please leave a comment or submit an issue."
Also, Rust, not rust. And many more.
Maybe the author could add a small note that this is not about that, and refer to something official about NixOS?
Anyway, I like the idea of the project!
www.tomshardware.com/software/linux/linux-dev-swatted-live-during-a-development-video-stream
Murderous, vile, wretched Rust proponents will try to censor, downplay and distract from this.