fix

modules/system/hardware/bluetooth.nix

@@ -0,0 +1,26 @@
+{
+  lib,
+  config,
+  ...
+}:
+let
+  cfg = config.my.system.hardware.bluetooth;
+in
+{
+  options.my.system.hardware.bluetooth = {
+    enable = lib.mkEnableOption "Bluetooth support";
+  };
+
+  config = lib.mkIf cfg.enable {
+    hardware = {
+      bluetooth.enable = true;
+      bluetooth.powerOnBoot = true;
+    };
+
+    services = {
+      bluetooth.enable = true;
+      bluetooth.startWhenNeeded = true;
+      blueman.enable = true;
+    };
+  };
+}

modules/system/hardware/default.nix

@@ -0,0 +1,7 @@
+{ lib, ... }:
+{
+  hardware = {
+    enableRedistributableFirmware = lib.mkDefault true;
+    keyboard.qmk.enable = true;
+  };
+}

modules/system/hardware/gui.nix

@@ -0,0 +1,19 @@
+{
+  lib,
+  config,
+  ...
+}:
+let
+  cfg = config.my.system.hardware.gui;
+in
+{
+  options.my.system.hardware.gui = {
+    enable = lib.mkEnableOption "GPU/graphics hardware acceleration";
+  };
+
+  config = lib.mkIf cfg.enable {
+    hardware = {
+      graphics.enable = true;
+    };
+  };
+}