Conditional on options as a mechanism for ensuring compatibility across NixOS versions?

flake.nix

@@ -233,32 +233,7 @@
       flakeInputs = self.inputs;
     };
 
-    nixosConfigurations = let
-      system = {
-        nixpkgsInput,
-        modules ? [],
-        system ? "x86_64-linux",
-      }:
-        nixpkgsInput.lib.nixosSystem {
-          inherit system;
-          modules = modules ++ [nixosModules.common];
-        };
-      stableSystem = {
-        modules,
-        system ? "x86_64-linux",
-      }:
-        system {
-          nixpkgsInput = nixpkgs;
-          modules = modules ++ [nixosModules.stableCommon];
-        };
-      unstableSystem = {
-        modules,
-        system ? "x86_64-linux",
-      }:
-        nixpkgs-unstable.lib.nixosSystem {
-nixosModules.stableCommon
-        };
-    in {
+    nixosConfigurations = {
       beefcake = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
         modules = with nixosModules; [

modules/nixos/default.nix

@@ -419,7 +419,13 @@
     };
   };
 
-  graphical-workstation = {pkgs, ...}: {
+  graphical-workstation = {
+    pkgs,
+    lib,
+    options,
+    config,
+    ...
+  }: {
     imports = with nixosModules; [
       plasma6
       enable-flatpaks-and-appimages
@@ -431,13 +437,22 @@
 
     xdg.portal.enable = true;
 
-    hardware = {
-      graphics = {
-        enable = true;
-        # driSupport32Bit = true;
-        # driSupport = true;
+    hardware =
+      if builtins.hasAttr "enable" options.hardware.graphics
+      then {
+        graphics = {
+          enable = true;
+          # driSupport32Bit = true;
+          # driSupport = true;
+        };
+      }
+      else {
+        opengl = {
+          enable = true;
+          driSupport32Bit = true;
+          driSupport = true;
+        };
       };
-    };
     environment = {
       systemPackages = with pkgs; [
         libnotify