From 9b811825a64403303ce688d620900850772aab28 Mon Sep 17 00:00:00 2001
From: Harald Hoyer <harald@hoyer.xyz>
Date: Sat, 23 May 2026 22:32:30 +0200
Subject: [PATCH] feat(amd): suspend the host on a nightly schedule

Add a systemd timer that suspends the amd machine at 22:00 each day so it
powers down predictably overnight without needing a manual shutdown step.
---
 systems/x86_64-linux/amd/default.nix | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/systems/x86_64-linux/amd/default.nix b/systems/x86_64-linux/amd/default.nix
index d727fcb..e95fbe2 100644
--- a/systems/x86_64-linux/amd/default.nix
+++ b/systems/x86_64-linux/amd/default.nix
@@ -92,6 +92,23 @@ with lib.metacfg;
     interval = "weekly";
   };
 
+  systemd.services.suspend-at-2200 = {
+    description = "Suspend the system at 22:00";
+    serviceConfig = {
+      Type = "oneshot";
+      ExecStart = "${pkgs.systemd}/bin/systemctl suspend";
+    };
+  };
+
+  systemd.timers.suspend-at-2200 = {
+    description = "Daily suspend at 22:00";
+    wantedBy = [ "timers.target" ];
+    timerConfig = {
+      OnCalendar = "22:00";
+      Unit = "suspend-at-2200.service";
+    };
+  };
+
   programs.steam = {
     enable = true;
   };