kmdtaufik/abyss ? reverse-engineered prompt

Build me a clean Nix flake based setup for my machine, with one place to manage both the system and my user settings. I want it organized so I can keep my hardware, system config, home config, and shared settings separate, but still easy to edit and rebuild.

Make it feel like a real personal computer setup, not a toy example. I should be able to plug in my machine details, keep my everyday apps and shell settings in one spot, and have the whole thing work from a fresh install with a simple rebuild. If there are any current best practices or newer Nix patterns you need, look them up online.

Please keep the structure tidy and understandable, and make sure it is something I could actually maintain over time without everything being crammed into one giant file.