Add workstation-specific settings

options/device/default.nix

@@ -1,5 +1,6 @@
-_: {
+{
   imports = [
     ./hardware.nix
+    ./roles.nix
   ];
 }

options/device/hardware.nix

@@ -14,12 +14,6 @@ in
       '';
     };
 
-    virtual-machine = mkOption {
-      type = lib.types.bool;
-      default = false;
-      description = "Is this system a virtual machine?";
-    };
-
     hasTPM = mkOption {
       type = lib.types.bool;
       default = false;

options/device/roles.nix

@@ -0,0 +1,35 @@
+{ lib, config, ... }: let 
+  inherit (lib) mkOption types;
+
+  cfg = config.myOptions.device;
+in {
+  options.myOptions.device.roles = {
+    type = mkOption {
+      type = types.enum ["laptop" "desktop" "server"];
+      default = "";
+      description = ''
+        The type/purpoes of the device that will be used within the rest of the configuration.
+          - laptop: portable devices with battery optimizations
+          - desktop: stationary devices configured for maximum performance
+          - server: server and infrastructure
+      '';
+    };
+
+    virtual-machine = mkOption {
+      type = lib.types.bool;
+      default = false;
+      description = "Is this system a virtual machine?";
+    };
+
+    isWorkstation = mkOption {
+      type = lib.types.bool;
+      default = builtins.elem cfg.type ["laptop" "desktop"];
+      readOnly = true;
+      description = ''
+        Is this machine a workstation?
+
+        Workstation machines are meant for regular day-to-day use.
+      '';
+    };
+  };
+}