Merge branch 'nc/11oct/checkpoint-task-result' of github.com:langchain-ai/langgraph into nc/11oct/checkpoint-task-result

libs/langgraph/langgraph/pregel/__init__.py

@@ -252,8 +252,8 @@ class Pregel(Runnable[Union[dict[str, Any], Any], Union[dict[str, Any], Any]]):
         if auto_validate:
             self.validate()
 
-    def copy(self, update: dict[str, Any]) -> Self:
-        attrs = {**self.__dict__, **update}
+    def copy(self, update: dict[str, Any] | None = None) -> Self:
+        attrs = {**self.__dict__, **(update or {})}
         return self.__class__(**attrs)
 
     def with_config(self, config: RunnableConfig | None = None, **kwargs: Any) -> Self:

libs/langgraph/langgraph/pregel/remote.py

@@ -154,6 +154,8 @@ class RemoteGraph(PregelProtocol, Runnable):
                     interrupts=tuple(interrupts),
                     state=self._create_state_snapshot(task["state"])
                     if task["state"]
+                    else {"configurable": task["checkpoint"]}
+                    if task["checkpoint"]
                     else None,
                     result=task.get("result"),
                 )