swappidyswapswap

potatobook-g/configuration.nix

@@ -100,6 +100,29 @@
 
   # i rly should put that important big comment back here
   system.stateVersion = "22.11"; # Did you read the comment?
+
+  systemd.services = {
+    create-swapfile = {
+      serviceConfig.Type = "oneshot";
+      wantedBy = [ "swap-swapfile.swap" ];
+      script = ''
+        swapfile="/swap/swapfile"
+        if [[ -f "$swapfile" ]]; then
+          echo "Swap file $swapfile already exists, taking no action"
+        else
+          echo "Setting up swap file $swapfile"
+          ${pkgs.coreutils}/bin/truncate -s 0 "$swapfile"
+          ${pkgs.e2fsprogs}/bin/chattr +C "$swapfile"
+        fi
+      '';
+    };
+  };
+
+  #fileSystems."/swap" = { 
+  #  device = "/dev/disk/by-uuid/f6d243ec-6be9-4551-8cbb-aefb7b691a62";
+  #  fsType = "btrfs";
+  #  options = [ "subvol=swap" "noatime" ];
+  #};
 }
 
 

potatobook-g/hardware-configuration.nix

@@ -36,7 +36,10 @@
       fsType = "vfat";
     };
 
-  swapDevices = [ ];
+  swapDevices = [{
+    device = "/swap/swapfile";
+    size = (1024 * 12); # 12GB
+  }];
 
   # 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