diff --git a/docs/nix/scripts/renderOptions.py b/docs/nix/scripts/renderOptions.py
index 5984c6a2..807cb12b 100644
--- a/docs/nix/scripts/renderOptions.py
+++ b/docs/nix/scripts/renderOptions.py
@@ -113,12 +113,13 @@ def render_option(name: str, option: dict[str, Any], level: int = 3) -> str:
 """
 
     decls = option.get("declarations", [])
-    source_path, name = replace_store_path(decls[0])
-    print(source_path, name)
-    res += f"""
+    if decls:
+        source_path, name = replace_store_path(decls[0])
+        print(source_path, name)
+        res += f"""
 :simple-git: [{name}]({source_path})
 """
-    res += "\n"
+        res += "\n"
 
     return res
 
diff --git a/nixosModules/clanCore/default.nix b/nixosModules/clanCore/default.nix
index c9b7ff3e..d367afa4 100644
--- a/nixosModules/clanCore/default.nix
+++ b/nixosModules/clanCore/default.nix
@@ -17,5 +17,6 @@
     # Inventory
     ./inventory/interface.nix
     ./meta/interface.nix
+    ./vars
   ];
 }
diff --git a/nixosModules/clanCore/vars/interface.nix b/nixosModules/clanCore/vars/interface.nix
index 0f596919..f9bce626 100644
--- a/nixosModules/clanCore/vars/interface.nix
+++ b/nixosModules/clanCore/vars/interface.nix
@@ -12,6 +12,7 @@ let
     str
     submoduleWith
     ;
+  # the original types.submodule has strange behavior
   submodule = module: submoduleWith { modules = [ module ]; };
   options = lib.mapAttrs (_: mkOption);
   subOptions = opts: submodule { options = options opts; };
@@ -23,7 +24,7 @@ in
         Settings for the generated variables.
       '';
       type = submodule {
-        freeFormType = anything;
+        freeformType = anything;
         imports = [ ./settings.nix ];
       };
     };