Nix flake for PC and Laptop

This flake provides two NixOS hosts (pc and laptop) with shared modules and Home Manager.

Layout

• flake.nix — Flake inputs/outputs, two nixosConfigurations (pc, laptop)
• modules/common.nix — Common NixOS settings for both hosts
• hosts/pc — PC host config + its hardware-configuration.nix
• hosts/laptop — Laptop host config + its hardware-configuration.nix
• home/users/user/home.nix — Home Manager configuration for the user

Quick start

1. Update variables:

• In flake.nix, set user = "<your-username>".
• Rename home/users/user/ to home/users/<your-username>/ and edit home.nix accordingly.
• In each host's configuration.nix, the Home Manager import uses ${user} so it will follow automatically once the flake variable is set.
• Set networking.hostName per host if you want different names.

2. Generate real hardware configs on each device:

On each machine, clone this repo and inside that host folder run:

sudo nixos-generate-config --show-hardware-config > hosts/<host>/hardware-configuration.nix

Replace the placeholder UUIDs and modules in the template with the generated content.

3. Switch configuration on the machine:

From the repo root on the machine you are configuring:

sudo nixos-rebuild switch --flake .#pc
# or
sudo nixos-rebuild switch --flake .#laptop

If building from another machine for a remote target, add --target-host and optionally --use-remote-sudo.

4. Home Manager only (optional):

Home Manager is integrated as a NixOS module. If you want to apply only HM changes after login:

home-manager switch --flake .#<username>@<host>

5. Format the repo (optional):

nix fmt

Notes

• This flake targets x86_64-linux only. If you need ARM support, you'll need to add an aarch64 system and review the inputs.
• Update system.stateVersion and home.stateVersion only when you deliberately accept new defaults.
• To pin a newer NixOS release, change inputs nixpkgs and home-manager to the latest stable branch and review release notes.