32 current 1970-01-01 01:00:00 23.11.20240229.068d4db 6.1.79 *

configuration.nix

@@ -10,6 +10,7 @@
   imports = [
     # Include the results of the hardware scan.
     ./hardware-configuration.nix
+    ./suspend-and-hibernate.nix
     inputs.home-manager.nixosModules.default
   ];
 
@@ -122,6 +123,7 @@
     clang-tools
     alejandra
     libnotify
+    gnomeExtensions.hibernate-status-button
   ];
 
   # Some programs need SUID wrappers, can be configured further or are

suspend-and-hibernate.nix

@@ -0,0 +1,41 @@
+{
+  config,
+  pkgs,
+  ...
+}: let
+  hibernateEnvironment = {
+    HIBERNATE_SECONDS = "3600";
+    HIBERNATE_LOCK = "/var/run/autohibernate.lock";
+  };
+in {
+  systemd.services."awake-after-suspend-for-a-time" = {
+    description = "Sets up the suspend so that it'll wake for hibernation";
+    wantedBy = ["suspend.target"];
+    before = ["systemd-suspend.service"];
+    environment = hibernateEnvironment;
+    script = ''
+      curtime=$(date +%s)
+      echo "$curtime $1" >> /tmp/autohibernate.log
+      echo "$curtime" > $HIBERNATE_LOCK
+      ${pkgs.utillinux}/bin/rtcwake -m no -s $HIBERNATE_SECONDS
+    '';
+    serviceConfig.Type = "simple";
+  };
+  systemd.services."hibernate-after-recovery" = {
+    description = "Hibernates after a suspend recovery due to timeout";
+    wantedBy = ["suspend.target"];
+    after = ["systemd-suspend.service"];
+    environment = hibernateEnvironment;
+    script = ''
+      curtime=$(date +%s)
+      sustime=$(cat $HIBERNATE_LOCK)
+      rm $HIBERNATE_LOCK
+      if [ $(($curtime - $sustime)) -ge $HIBERNATE_SECONDS ] ; then
+        systemctl hibernate
+      else
+        ${pkgs.utillinux}/bin/rtcwake -m no -s 1
+      fi
+    '';
+    serviceConfig.Type = "simple";
+  };
+}