feat: recursive builtins

src/ty/internal/attrset.rs

@@ -146,6 +146,10 @@ impl RecAttrSet {
         self.data.borrow().clone()
     }
 
+    pub fn from_inner(data: Arc<RefCell<HashTrieMapSync<Symbol, Value>>>) -> Self {
+        RecAttrSet { data }
+    }
+
     pub fn force_deep(&mut self, vm: &VM) -> Result<()> {
         let mut map: Vec<_> = self
             .data