Setting up a new machine with Nixpkgs or NixOS

Generally speaking you wouldn't want to write any NixOS configurations to provision a new install without figuring out about partitions and hardware side of things, considering that I want to go multiarch based configurations without repeating myself by copying and pasting boilerplate config code.

Root directory layout

Other than good old default directories (minus /usr directory given that NixOS is not FHS compliant by design in pursuit of reproducible builds), I have to make a /workspaces directory to host Git-based projects locally much like if I am inside GitHub Codespaces.