This is version 3 of my tinkering with an immutable configuration for my computers. This time around I used emacs' org + nixos to settle on this. The README is the single source of truth for my computer. It is then "tangled" into nix source files, which can then be used by nixos to build my system. This allows me to keep a living document as my system configuration, especially reminding me (hopefully) of certain decisions.