fix(3d): modularize 3D module

home/hosts/andromache/default.nix

@@ -19,10 +19,7 @@
   xdg.userDirs.createDirectories = false;
   xdg.userDirs.download = "${config.home.homeDirectory}/dl";
 
-  modules."3d" = {
-    printing.enable = true;
-    modeling.enable = true;
-  };
+  modules."3d".printing.enable = true;
   ai-tools = {
     claude-code.enable = true;
     codex.enable = true;

home/modules/3d/default.nix

@@ -6,7 +6,18 @@
       enable = lib.mkEnableOption "3D printing tools";
     };
     modeling = {
-      enable = lib.mkEnableOption "3D modeling tools";
+      blender = {
+        enable = lib.mkOption {
+          default = false;
+          type = lib.types.bool;
+        };
+      };
+      openscad = {
+        enable = lib.mkOption {
+          default = false;
+          type = lib.types.bool;
+        };
+      };
     };
   };
 

home/modules/3d/modeling.nix

@@ -6,11 +6,15 @@
 }:
 
 {
-  config = lib.mkIf config.modules."3d".modeling.enable {
-    home.packages = with pkgs; [
-      blender
-      openscad-lsp
-      openscad-unstable
-    ];
+  config = {
+    home.packages =
+      with pkgs;
+      lib.optionals config.modules."3d".modeling.blender.enable [
+        blender
+      ]
+      ++ lib.optionals config.modules."3d".modeling.openscad.enable [
+        openscad-lsp
+        openscad-unstable
+      ];
   };
 }