Documents the layered-adoption path: add nomarchy as a flake input, build
a single pkgs with nomarchy.overlays.default, wire nomarchy.nixosModules
into both nixosSystem and a standalone homeManagerConfiguration, and
rebuild. Preserves the user's hardware-configuration, hostname, and
account; no reformat.
Calls out the conflicts an existing config will hit (DM, Hyprland, audio,
NetworkManager, user groups, /etc/os-release rebrand, autoLogin) with
explicit mkForce/drop-this-line guidance. Points at the live-ISO clean
install as the alternative for users who'd rather start fresh.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
