feat(hypridle): define config in home-manager with per-host timeouts

Replace the static hypridle.conf with services.hypridle.settings and add required timeout options so each host tunes its own values:

- idols-ai (PC): 15 min keyboard, 20 min screen-off, 30 min lock.
- 12kingdoms-shoukei (laptop): 3 / 6 / 20 min (previous values).

The options have no defaults because the right values depend on the machine. Update the home-manager eval test to inspect the settings option instead of the old config file text.

home/hosts/linux/12kingdoms-shoukei.nix

@@ -14,6 +14,13 @@ in
   modules.desktop.gaming.enable = false;
   modules.desktop.niri.enable = true;
 
+  # Laptop defaults: backlight 3 min, screen off 6 min, lock 20 min.
+  modules.desktop.hypridle = {
+    keyboardBacklightTimeout = 180;
+    screenOffTimeout = 360;
+    lockTimeout = 1200;
+  };
+
   xdg.configFile."niri/niri-hardware.kdl".source =
     mkSymlink "${config.home.homeDirectory}/nix-config/hosts/12kingdoms-shoukei/niri-hardware.kdl";
 

home/hosts/linux/idols-ai.nix

@@ -10,6 +10,13 @@ in
   modules.desktop.gaming.enable = true;
   modules.desktop.niri.enable = true;
 
+  # PC: keep the screen on longer than on the laptop.
+  modules.desktop.hypridle = {
+    keyboardBacklightTimeout = 900;
+    screenOffTimeout = 1200;
+    lockTimeout = 1800;
+  };
+
   programs.zed-editor.userSettings = {
     ui_font_size = 18.0;
     buffer_font_size = 17.0;

home/linux/gui/base/hypridle/default.nix

@@ -1,9 +1,66 @@
 {
+  config,
+  lib,
   ...
 }:
+let
+  cfg = config.modules.desktop.hypridle;
+in
 {
-  xdg.configFile."hypr/hypridle.conf".source = ./hypridle.conf;
+  options.modules.desktop.hypridle = {
+    keyboardBacklightTimeout = lib.mkOption {
+      type = lib.types.int;
+      description = "Seconds of idle before turning off the keyboard backlight.";
+    };
+    screenOffTimeout = lib.mkOption {
+      type = lib.types.int;
+      description = "Seconds of idle before turning off the monitors (DPMS).";
+    };
+    lockTimeout = lib.mkOption {
+      type = lib.types.int;
+      description = "Seconds of idle before locking the screen.";
+    };
+  };
 
-  # Hyprland idle daemon
-  services.hypridle.enable = true;
+  config = {
+    # Hyprland/niri idle daemon. Declared in Nix (instead of a raw
+    # hypridle.conf) so each host can tune the timeouts below.
+    services.hypridle = {
+      enable = true;
+
+      settings = {
+        general = {
+          lock_cmd = "noctalia-shell ipc call lockScreen lock";
+          before_sleep_cmd = "noctalia-shell ipc call lockScreen lock";
+          ignore_dbus_inhibit = false;
+        };
+
+        listener = [
+          {
+            timeout = cfg.keyboardBacklightTimeout;
+            # brightnessctl --list / -d kbd_backlight
+            on-timeout = "brightnessctl --save --device=kbd_backlight set 0";
+            on-resume = "brightnessctl --restore --device=kbd_backlight";
+          }
+          {
+            timeout = cfg.screenOffTimeout;
+            ignore_inhibit = true;
+            # Some apps keep idle-inhibit active even when they are only sitting
+            # on a page, which can prevent screen-off forever. Ignore those
+            # inhibitors for screen-off, but skip while an MPRIS player reports
+            # active playback.
+            condition_cmd = "! playerctl -a status 2>/dev/null | grep -q '^Playing$'";
+            condition_retry = 30;
+            on-timeout = "niri msg action power-off-monitors";
+            on-resume = "niri msg action power-on-monitors";
+          }
+          {
+            timeout = cfg.lockTimeout;
+            ignore_inhibit = true;
+            on-timeout = "noctalia-shell ipc call lockScreen lock";
+          }
+        ];
+      };
+    };
+  };
 }

home/linux/gui/base/hypridle/hypridle.conf

@@ -1,47 +0,0 @@
-general {
-    lock_cmd = noctalia-shell ipc call lockScreen lock              # avoid starting multiple instances
-    before_sleep_cmd = noctalia-shell ipc call lockScreen lock          # lock before suspend
-    ignore_dbus_inhibit = false                       # whether to ignore dbus-sent idle-inhibit requests
-}
-
-listener { 
-    timeout = 180                                                      # 3 minutes
-    # List devices: brightnessctl --list
-    # Adjust keyboard backlight: brightnessctl -d kbd_backlight set 50%
-    on-timeout = brightnessctl --save --device=kbd_backlight set 0     # turn off keyboard backlight.
-    on-resume = brightnessctl --restore --device=kbd_backlight         # turn on keyboard backlight.
-}
-
-# NOTE: intentionally no 10min screen-dim listener here. Writing brightnessctl
-# directly fights the ambient-light auto-brightness daemon (wluma on shoukei):
-# wluma is adaptive, and hypridle's periodic brightness writes get learned as if
-# the user had made those adjustments. niri (26.04) has no built-in idle timers,
-# so hypridle stays responsible for keyboard backlight, dpms and locking below.
-
-# Some apps keep idle-inhibit active even when they are only sitting on a page,
-# which can prevent screen-off forever. Ignore those inhibitors for screen-off,
-# but skip the action while an MPRIS player reports active playback.
-listener {
-    timeout = 360                                      # 6 minutes
-    ignore_inhibit = true
-    condition_cmd = ! playerctl -a status 2>/dev/null | grep -q '^Playing$'
-    condition_retry = 30
-    on-timeout = niri msg action power-off-monitors    # DPMS off via niri
-    on-resume = niri msg action power-on-monitors      # DPMS on via niri
-}
-
-listener {
-    timeout = 1200                                     # 20 minutes
-    ignore_inhibit = true
-    on-timeout = noctalia-shell ipc call lockScreen lock           # lock screen
-}
-
-# listener {
-#     timeout = 1660                                             # 31 minutes
-#     on-resume = brightnessctl -r   # monitor wake up & screen on
-# }
-
-# listener {
-#     timeout = 1800                                # 30min
-#     on-timeout = systemctl suspend                # suspend pc
-# }

outputs/aarch64-linux/tests/home-manager/expr.nix

@@ -13,22 +13,15 @@ lib.genAttrs hosts (
   name:
   let
     hm = outputs.nixosConfigurations.${name}.config.home-manager.users.${username};
-    hypridleConfig = builtins.readFile hm.xdg.configFile."hypr/hypridle.conf".source;
-    hasHypridleLines = lines: lib.hasInfix (lib.concatStringsSep "\n" lines) hypridleConfig;
+    listeners = hm.services.hypridle.settings.listener;
+    findByAction = action: lib.findFirst (l: (l."on-timeout" or "") == action) { } listeners;
+    screenOff = findByAction "niri msg action power-off-monitors";
+    lock = findByAction "noctalia-shell ipc call lockScreen lock";
   in
   {
     homeDirectory = hm.home.homeDirectory;
-    hypridleScreenOffIgnoresInhibitors = hasHypridleLines [
-      "    timeout = 360                                      # 6 minutes"
-      "    ignore_inhibit = true"
-    ];
-    hypridleScreenOffSkipsPlayingMedia = hasHypridleLines [
-      "    condition_cmd = ! playerctl -a status 2>/dev/null | grep -q '^Playing$'"
-      "    condition_retry = 30"
-    ];
-    hypridleLockIgnoresInhibitors = hasHypridleLines [
-      "    timeout = 1200                                     # 20 minutes"
-      "    ignore_inhibit = true"
-    ];
+    hypridleScreenOffIgnoresInhibitors = screenOff.ignore_inhibit or false;
+    hypridleScreenOffSkipsPlayingMedia = (screenOff.condition_cmd or "") != "";
+    hypridleLockIgnoresInhibitors = lock.ignore_inhibit or false;
   }
 )