langgraph 0.1.7

Summary of Changes

• Added support for persisting writes in checkpoints across tasks, improving resilience when reloading interrupted workflows (PR #976)
• Added compatibility layer for newer versions of langchain-core (PR #973)

Detailed Changes

langgraph.checkpoint.base.CheckpointTuple

• Added new pending_writes field to store task-specific writes that can be restored when reloading a checkpoint

langgraph.checkpoint.base.BaseCheckpointer

• Added new methods put_writes and aput_writes to enable storing task-specific writes in checkpoints
• Implemented these methods in all checkpointer classes (Memory, SQLite, AioSQLite)

langgraph.pregel.Pregel

• Enhanced checkpoint system to persist writes between tasks, improving resilience
• Now persists task writes to checkpointer during execution, allowing interrupted workflows to be resumed more effectively
• Tasks with pre-loaded writes don't need to be re-executed, improving performance when restarting interrupted workflows
• Added unique task IDs to more reliably track and restore task states

langgraph.utils.runnable.RunnableCallable

• Added compatibility layer for working with newer versions of langchain-core by using _set_config_context function