Regenerate hardware config to pick up swapfile

machine/backyard/default.nix

@@ -1,18 +1,15 @@
-# Edit this configuration file to define what should be installed on
-# your system.  Help is available in the configuration.nix(5) man page
-# and in the NixOS manual (accessible by running ‘nixos-help’).
-
-{ config, pkgs, ... }:
+{ pkgs, ... }:
 
 {
-  imports =
-    [ # Include the results of the hardware scan.
+  imports = [
     ./hardware-configuration.nix
   ];
 
   # Bootloader.
-  boot.loader.systemd-boot.enable = true;
-  boot.loader.efi.canTouchEfiVariables = true;
+  boot.loader = {
+    systemd-boot.enable = true;
+    efi.canTouchEfiVariables = true;
+  };
 
   networking.hostName = "backyard"; # Define your hostname.
   # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.

machine/backyard/hardware-configuration.nix

@@ -18,17 +18,19 @@
       fsType = "ext4";
     };
 
-  fileSystems."/boot" =
-    { device = "/dev/disk/by-uuid/971B-96E8";
-      fsType = "vfat";
-    };
-
   fileSystems."/nix" =
     { device = "/dev/disk/by-uuid/0d031c2d-e66e-41d2-906f-1955b5a26f23";
       fsType = "ext4";
     };
 
-  swapDevices = [ ];
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/971B-96E8";
+      fsType = "vfat";
+    };
+
+  swapDevices =
+    [ { device = "/dev/disk/by-uuid/f55dc7e7-eeec-4be6-88e4-f3e94e749fd2"; }
+    ];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
   # (the default) this is the recommended approach. When using systemd-networkd it's