i need to start making smaller commits

hosts/nixdesk/default.nix

@@ -1,16 +1,21 @@
-{
+{lib, ...}: {
   imports = [
     ./hardware.nix
+    ./hibernate-boot.nix
   ];
 
   networking.hostName = "nixdesk";
 
-  swapDevices = [
-    {
-      device = "/var/lib/swapfile";
-      size = 16 * 1024;
-    }
-  ];
+  #swapDevices = lib.singleton {
+  #  device = "/dev/disk/by-uuid/1dcce4ab-71da-4928-83d5-62b20fd0fddf";
+  #};
+
+  #boot.resumeDevice = "/dev/disk/by-uuid/1dcce4ab-71da-4928-83d5-62b20fd0fddf";
+
+  #boot.kernelParams = [
+  #  "resume=UUID=1dcce4ab-71da-4928-83d5-62b20fd0fddf"
+  #  "resume_offset=3841492992" # fdisk -l
+  #];
 
   networking.interfaces.eno1.wakeOnLan.enable = true;
 

hosts/nixdesk/hardware.nix

@@ -2,6 +2,7 @@
   inputs,
   config,
   pkgs,
+  lib,
   ...
 }: {
   imports = [
@@ -59,12 +60,25 @@
       fsType = "btrfs";
       options = ["subvol=nix" "compress=zstd" "noatime"];
     };
+    "/.swapvol" = {
+      device = "/dev/disk/by-uuid/d87276c0-ef9c-422e-b2de-effc1b47c654";
+      fsType = "btrfs";
+      options = ["subvol=swap" "noatime"];
+    };
     "/boot" = {
       device = "/dev/disk/by-uuid/588B-CB97";
       fsType = "vfat";
     };
   };
 
+  boot.resumeDevice = "/dev/disk/by-uuid/d87276c0-ef9c-422e-b2de-effc1b47c654";
+  # btrfs inspect-internal map-swapfile -r /.swapvol/swapfile
+  boot.kernelParams = ["resume_offset=76293376"];
+
+  swapDevices = lib.singleton {
+    device = "/.swapvol/swapfile";
+  };
+
   hardware.enableAllFirmware = true;
 
   services.xserver.videoDrivers = [

hosts/nixdesk/hibernate-boot.nix

@@ -0,0 +1,28 @@
+{pkgs, ...}: {
+  # hibernate and reboot to firmware
+  # this allows me to save linux state and boot into another os (such as windows)
+  # make sure not to mount any filesystems from the other os or you risk losing data
+  environment.systemPackages = [
+    (pkgs.writeShellScriptBin "hib-boot" ''
+      set -e
+
+      if [ ! -v 1 ]; then
+        echo "no argument provided"
+        echo "please provide the id for the os you want to boot"
+        echo "these are the valid id's:"
+        echo ""
+        ${pkgs.efibootmgr}/bin/efibootmgr
+        exit
+      fi
+
+      if [ ! -w /sys/power/disk -o ! -w /sys/power/state ]; then
+        echo "you lack permission to write to /sys/power/{disk,state}, are you not running this script as root?"
+        exit
+      fi
+
+      ${pkgs.efibootmgr}/bin/efibootmgr -n "$1" >/dev/null
+      echo reboot >/sys/power/disk
+      echo disk >/sys/power/state
+    '')
+  ];
+}