Enable widgets on per host basis

flake.nix

@@ -28,13 +28,6 @@
         pkgs = nixpkgs.legacyPackages.${system};
     in {
         nixosConfigurations = {
-            dell-laptop = nixpkgs.lib.nixosSystem {
-                specialArgs = {inherit inputs;};
-                modules = [
-                    ./hosts/dell-laptop
-                    ./users/seb
-                ];
-            };
             seb-desktop = nixpkgs.lib.nixosSystem {
                 specialArgs = {inherit inputs;};
                 modules = [
@@ -42,6 +35,13 @@
                     ./users/seb
                 ];
             };
+            dell-laptop = nixpkgs.lib.nixosSystem {
+                specialArgs = {inherit inputs;};
+                modules = [
+                    ./hosts/dell-laptop
+                    "${./.}/users/seb/@dell-laptop.nix"
+                ];
+            };
         };
 
         formatter.${system} = nixpkgs.legacyPackages.${system}.alejandra.overrideAttrs {

modules/home/de/default.nix

@@ -9,10 +9,22 @@ in {
     imports = [./qtile.nix];
 
     options.myConfig.de = {
+        theming.enable = lib.mkEnableOption "";
+
         wallpaper = lib.mkOption {
             type = lib.types.path;
         };
-        theming.enable = lib.mkEnableOption "";
+
+        widget = {
+            backlight = {
+                enable = lib.mkEnableOption "";
+                device = lib.mkOption {
+                    type = lib.types.str;
+                };
+            };
+            battery.enable = lib.mkEnableOption "";
+        };
+
         tray = {
             syncthing.enable = lib.mkEnableOption "";
             networkmanager.enable = lib.mkEnableOption "";

modules/home/de/qtile.nix

@@ -3,10 +3,12 @@
     pkgs,
     lib,
     ...
-}: {
+}: let
+    cfg = config.myConfig.de;
+in {
     options.myConfig.de.qtile.enable = lib.mkEnableOption "";
 
-    config = lib.mkIf config.myConfig.de.qtile.enable {
+    config = lib.mkIf cfg.qtile.enable {
         home.packages = [
             # Widget dependencies
             pkgs.python311Packages.iwlib
@@ -18,7 +20,7 @@
             pkgs.brightnessctl
         ];
 
-        home.file.".background-image".source = config.myConfig.de.wallpaper;
+        home.file.".background-image".source = cfg.wallpaper;
 
         xsession.enable = true;
 
@@ -34,7 +36,22 @@
 
         services.dunst.enable = true;
 
-        xdg.configFile."qtile/config.py".text = ''
+        xdg.configFile."qtile/config.py".text = let
+            backlightWidget =
+                if cfg.widget.backlight.enable
+                then ''
+                    widget.Sep(),
+                    widget.Backlight(fmt="󰃠 {}", backlight_name='${cfg.widget.backlight.device}'),
+                ''
+                else "";
+            batteryWidget =
+                if cfg.widget.battery.enable
+                then ''
+                          widget.Sep(),
+                    widget.Battery(format="󰁹 {percent:2.0%}"),
+                ''
+                else "";
+        in ''
             import os
             import subprocess
 
@@ -160,10 +177,8 @@
             				]),
             				widget.Sep(),
             				widget.PulseVolume(fmt="󰕾 {}"),
-                            widget.Sep(),
+                            ${backlightWidget}
-                            widget.Backlight(fmt="󰃠 {}", backlight_name='amdgpu_bl1'),
+            				${batteryWidget}
-            				widget.Sep(),
-            				widget.Battery(format="󰁹 {percent:2.0%}"),
             			],
             			26,
             		),

users/seb/@dell-laptop.nix

@@ -0,0 +1,11 @@
+{...}: {
+    imports = [./default.nix];
+
+    home-manager.users.seb.myConfig.de.widget = {
+        backlight = {
+            enable = true;
+            device = "amdgpu_bl1";
+        };
+        battery.enable = true;
+    };
+}