Nuno Campos comments

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                                            Nuno Campos

Cannot draw graph w/ xray=True when graph contains a subgraph w/ edges targeting the subgraph entry point

Hi, can you confirm this issue still occurs in the latest version? 0.2.4

Cannot draw graph w/ xray=True when graph contains a subgraph w/ edges targeting the subgraph entry point

I've added the snippet above as a test case and can confirm this is fixed, closing, thanks for reporting!

After changing chat_models from ChatOpenAI to ChatVertexAI, i get a error 'ValueError: SystemMessage should be the first in the history.'

This is a limitation of the Vertex API, please contact Google, as only they can change their API, we cannot.

Graph stream labels "HumanMessage" but it is a "AiMessage"

The solution is to not use StrOutputParser when you want a message, the chat model returns a message, you can just remove the output parser

Shouldn't thread_ts be set to a datetime object instead of checkpoint["id"]?

thread_ts has been renamed to checkpoint_id in 0.2

MemorySaver doesn't store checkpoints in descending order by timestamp

This has been fixed

Possible error in `update_state` Deciding last updating node because of sorting null values

Do you have an actual error caused by this? I don't think versions seen are ever null?

Possible error in `update_state` Deciding last updating node because of sorting null values

A node mapped to an empty dict is a node which has never run before, so it shouldn't be matched anyway

Possible error in `update_state` Deciding last updating node because of sorting null values

This is no longer an issue, see line 2052 in this file

feat(graph): make add_edge function start_key parameter in order

Hi, the order in this list shouldn't affect anything at runtime, see here https://github.com/langchain-ai/langgraph/blob/main/libs/langgraph/langgraph/graph/state.py#L873 where it is turned into a set, which is an unordered collection