start making modules as actual modules, wip no battery left

osConfigs/modules/game.nix

@@ -1,10 +1,14 @@
-{ config, lib, inputs, pkgs, ... }:
+{config, lib, ... }:
 
 {
-  programs.steam.enable=true; 
-  programs.steam.protontricks.enable=true;
+  options.mods.gayming.enable = lib.mkOption {
+    type = lib.types.bool;
+    default = true;
+    description = "enable games on the host";
+  };
 
-#  environment.systemPackages = with pkgs; [ qemu quickemu];
-#  programs.virt-manager.enable = true;
-#  virtualisation.libvirtd.enable = true;
+  config = lib.mkIf config.mods.gayming.enable {
+    programs.steam.enable = true; 
+    programs.steam.protontricks.enable = true;
+  };
 }

osConfigs/modules/nvidia.nix

@@ -2,10 +2,19 @@
 { config, lib, inputs, pkgs, ... }:
 
 {
-  hardware.graphics = {
-    enable = true;
-	enable32Bit = true;
+  options.mods.nvidia-graphics.enable = lib.mkOption {
+    type = lib.types.bool;
+    default = true;
+    description = "enable my nvidia graphics settings";
+  };
+  
+  config = lib.mkIf config.mods.nvidia-graphics.enable {
+    hardware.graphics = {
+      enable = true;
+      enable32Bit = true;
+    };
+
+    services.xserver.videoDrivers = ["nvidia"];
   };
 
-  services.xserver.videoDrivers = ["nvidia"];
 }

osConfigs/modules/vboxHost.nix

@@ -1,6 +1,14 @@
 { config, lib, inputs, pkgs, ... }:
 
 {
-  virtualisation.virtualbox.host.enable = true;
-  users.users.tom.extraGroups = [ "vboxusers" ];
+  options.mods.virtualbox.enable = lib.mkOption {
+    type = lib.types.bool;
+	default = true;
+	description = "enable virtualbox as host";
+  };
+
+  config = lib.mkIf config.mods.virtualbox.enable {
+    virtualisation.virtualbox.host.enable = true;
+    users.users.tom.extraGroups = [ "vboxusers" ];
+  };
 }

osConfigs/modules/yubikey.nix

@@ -1,14 +1,29 @@
 { config, lib, inputs, pkgs, ... }:
 
 {
-  programs.gnupg.agent = {
-    enable = true;
-    enableSSHSupport = true;
+  options.mods.yubikey = {
+    enable = lib.mkOption {
+      type = lib.types.bool;
+	  default = true;
+	  description = "enable yubikey";
+	};
+
+	id = lib.mkOption {
+		type = lib.str;
+		description = "yubikey id";
+	};
   };
 
-  security.pam.yubico = {
-    enable = true;
-    id = "30536547";
-    mode = "challenge-response";
+   config = lib.mkIf config.mods.yubikey.enable {
+    programs.gnupg.agent = {
+      enable = true;
+      enableSSHSupport = true;
+    };
+
+    security.pam.yubico = {
+      enable = true;
+      id =  config.mods.yubikey.id;
+      mode = "challenge-response";
+    };
   };
 }