[remEYEnder] Add module

nixos/modules/services/default.nix

@@ -5,6 +5,7 @@
     ./openssh
     ./pipewire
     ./printing
+    ./remEYEnder
     ./tailscale
   ];
 }

nixos/modules/services/remEYEnder/default.nix

@@ -0,0 +1,33 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.sisyphus.services.remEYEnder;
+in {
+  option.sisyphus.services.remEYEnder.enable = lib.mkEnableOption "Eye reminder";
+
+  config = lib.mkIf cfg.enable {
+    systemd.user = {
+      services.remEYEnder = {
+        enable = true;
+        description = "Send an eye reminder";
+        serviceConfig.Type = "oneshot";
+        script = ''
+          # Display reminder for 20 seconds.
+          ${pkgs.libnotify}/bin/notify-send -t 20000 "RemEYEnder" "Look away from your screen :)"
+        '';
+      };
+      timers.remEYEnder = {
+        enable = true;
+        description = "Timer for remEYEnders, runs every 20 minutes.";
+        wantedBy = [
+          "timers.target"
+        ];
+        timerConfig = {
+          OnActiveSec = "20min";
+          OnUnitActiveSec = "20min";
+          Unit = "remEYEnder.service";
+        };
+      };
+    };
+  };
+}