nixos-config/flake.nix

# /etc/nixos/flake.nix
{
  inputs = {
    # NOTE: Replace "nixos-23.11" with that which is in system.stateVersion of
    # configuration.nix. You can also use latter versions if you wish to
    # upgrade.
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    nixos-needsreboot.url = "https://flakehub.com/f/thefossguy/nixos-needsreboot/*.tar.gz";
  };
  outputs = inputs@{ self, nixpkgs, nixos-needsreboot, ... }: {
    # NOTE: 'nixos' is the default hostname set by the installer
    nixosConfigurations.valhalla = nixpkgs.lib.nixosSystem {
      # NOTE: Change this to aarch64-linux if you are on ARM
      system = "x86_64-linux";
      modules = [ ./hosts/desktop/valhalla/configuration.nix ];
    };
  };
}