Sydney Runkleandopen-swe[bot] <open-swe@users.noreply.github.com> 4e4bf1a204 feat(langgraph): warn when checkpointer lacks DeltaChannel support ...

A graph using `DeltaChannel` reconstructs state via the saver's
`get_delta_channel_history` API (added in `langgraph-checkpoint>=4.1.0`).
Savers from older packages lack it and fail at runtime. `StateGraph.compile`
now warns at compile time so users know to upgrade `langgraph-checkpoint`.

Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>

2026-06-10 20:55:45 +00:00

..

__snapshots__

chore: state_updated_at sort by (#6857)

2026-02-18 10:41:23 -08:00

example_app

chore(cli): Add config schema (#6142)

2025-09-12 12:16:07 -07:00

__init__.py

libs: add cli, sdk-py, sdk-js and move core langgraph

2024-06-17 20:37:25 -04:00

agents.py

chore: drop Python 3.9 (and syntax) (#6289)

2025-10-16 20:17:46 -04:00

any_int.py

wip

2024-08-08 15:29:40 -07:00

any_str.py

chore: drop Python 3.9 (and syntax) (#6289)

2025-10-16 20:17:46 -04:00

compose-postgres.yml

Rename compose projects

2024-09-10 16:17:22 -07:00

compose-redis.yml

feat(langgraph): implement redis node level cache (#5834)

2025-08-11 09:19:34 -07:00

conftest_checkpointer.py

Merge commit from fork

2026-02-26 12:01:58 -08:00

conftest_store.py

chore: drop Python 3.9 (and syntax) (#6289)

2025-10-16 20:17:46 -04:00

conftest.py

chore(deps): upgrade dependencies with uv lock --upgrade (#6146)

2025-09-14 19:36:43 -04:00

fake_chat.py

chore: drop Python 3.9 (and syntax) (#6289)

2025-10-16 20:17:46 -04:00

fake_tracer.py

chore: drop Python 3.9 (and syntax) (#6289)

2025-10-16 20:17:46 -04:00

memory_assert.py

chore: drop Python 3.9 (and syntax) (#6289)

2025-10-16 20:17:46 -04:00

messages.py

langgraph: changes for compatibility pydantic v2 / langchain-core==0.3 (#1594)

2024-09-05 15:26:35 -04:00

test_algo.py

refactor(langgraph): make constants generally private with a few select exports (#5529)

2025-07-16 09:27:04 -04:00

test_channels.py

feat: public get_writes_history saver API + delta cadence rework (#7699)

2026-05-04 15:18:43 -04:00

test_checkpoint_migration.py

chore: drop Python 3.9 (and syntax) (#6289)

2025-10-16 20:17:46 -04:00

test_config_async.py

fix(langgraph): merge instead of overwrite in ensure_config for callbacks, tags, metadata, configurable (#7926)

2026-05-29 09:40:22 -04:00

test_delta_channel_benchmark.py

feat: public get_writes_history saver API + delta cadence rework (#7699)

2026-05-04 15:18:43 -04:00

test_delta_channel_checkpointer_support.py

feat(langgraph): warn when checkpointer lacks DeltaChannel support

2026-06-10 20:55:45 +00:00

test_delta_channel_exit_mode.py

feat(checkpoint): force delta channel snapshot after max supersteps since last snapshot (#7746)

2026-05-08 21:39:31 +00:00

test_delta_channel_id_stability.py

fix(langgraph): assign stable IDs to id=None BaseMessages before DeltaChannel checkpoint writes (#7913)

2026-05-26 13:55:14 -04:00

test_delta_channel_migration.py

feat: public get_writes_history saver API + delta cadence rework (#7699)

2026-05-04 15:18:43 -04:00

test_delta_channel_supersteps_bound.py

feat(checkpoint): force delta channel snapshot after max supersteps since last snapshot (#7746)

2026-05-08 21:39:31 +00:00

test_delta_channel_update_state.py

fix: updateState bug for deltaChannel on empty thread (#8011)

2026-06-09 11:36:40 -07:00

test_deprecation.py

feat: type safe stream/invoke w/ proper output type coercion (#6961)

2026-03-09 17:52:36 +00:00

test_graph_callbacks.py

fix(langgraph): remove strict add_handler type check that breaks OTel instrumentation (#7544)

2026-04-17 15:33:10 -04:00

test_interleave_arrival_order.py

feat(langgraph): dispatch stream_events(version='v3') on Pregel (#7677)

2026-05-01 11:30:32 -04:00

test_interrupt_migration.py

chore: Restrict "json" type deserialization (#6269)

2025-10-20 10:18:36 -07:00

test_interruption.py

fix(langgraph): revert selective interrupt task scheduling (#6252)

2025-10-08 12:34:01 -07:00

test_large_cases_async.py

chore: allow passing some metadata only for tracing purposes (#7383)

2026-04-14 09:58:24 -04:00

test_large_cases.py

chore: allow passing some metadata only for tracing purposes (#7383)

2026-04-14 09:58:24 -04:00

test_managed_values.py

fix(langgraph): Tidy up AgentState (#5801)

2025-08-03 07:12:53 -04:00

test_messages_state.py

release(langgraph): v1 working branch (#6093)

2025-10-16 07:11:22 -04:00

test_parent_command_async.py

fix(langgraph): correct ParentCommand bubbling when checkpoint_ns includes numeric task segments (#6864)

2026-02-26 13:26:48 -05:00

test_parent_command.py

fix(langgraph): correct ParentCommand bubbling when checkpoint_ns includes numeric task segments (#6864)

2026-02-26 13:26:48 -05:00

test_pregel_async.py

feat(langgraph): add node-level error handlers (#7233)

2026-04-29 21:27:06 -07:00

test_pregel_debug.py

feat(langgraph): name tool-dispatched subagents via lc_agent_name (#7928)

2026-05-29 16:46:45 -04:00

test_pregel_stream_events_v3.py

feat(langgraph): dispatch stream_events(version='v3') on Pregel (#7677)

2026-05-01 11:30:32 -04:00

test_pregel.py

feat: public get_writes_history saver API + delta cadence rework (#7699)

2026-05-04 15:18:43 -04:00

test_pydantic.py

Merge commit from fork

2026-02-26 12:01:58 -08:00

test_remote_graph_v3.py

feat(langgraph): wire RemoteGraph.interleave to sdk-py interleave_projections (#7938)

2026-06-01 12:42:42 -04:00

test_remote_graph.py

feat: add context for remote graph api (#7132)

2026-03-12 11:57:06 -04:00

test_retry.py

fix(langgraph): [LSD-1507] Distinguish between user cancelled and other cancellations (#7920)

2026-05-28 14:34:18 -07:00

test_runnable.py

chore(deps): upgrade dependencies with uv lock --upgrade (#6146)

2025-09-14 19:36:43 -04:00

test_runtime.py

test(sdk-py): add factory-graph integration test exercising the server factory path (#7978)

2026-06-02 12:38:33 -04:00

test_serde_allowlist.py

Merge commit from fork

2026-02-26 12:01:58 -08:00

test_state.py

chore: drop Python 3.9 (and syntax) (#6289)

2025-10-16 20:17:46 -04:00

test_stream_before_builtins.py

feat(langgraph): add before_builtins opt-in for stream transformers (#7882)

2026-05-21 11:54:33 -04:00

test_stream_data_transformers.py

feat(langgraph): dispatch stream_events(version='v3') on Pregel (#7677)

2026-05-01 11:30:32 -04:00

test_stream_events_v3_e2e.py

feat(langgraph): dispatch stream_events(version='v3') on Pregel (#7677)

2026-05-01 11:30:32 -04:00

test_stream_events_v3_kwarg_forwarding.py

feat(langgraph): forward kwargs through stream_events(version="v3") (#7696)

2026-05-04 08:52:52 -04:00

test_stream_events_v3.py

chore: migrate Python type checking to ty (#8002)

2026-06-05 10:55:47 -04:00

test_stream_lifecycle_transformer.py

fix(langgraph): keep _on_started backward-compatible with overrides predating cause (#7987)

2026-06-02 11:37:50 -04:00

test_stream_messages_transformer.py

fix(langgraph): keep tool results out of v3 messages (#7838)

2026-05-19 11:36:16 -04:00

test_stream_subgraph_transformer.py

feat(langgraph): dispatch stream_events(version='v3') on Pregel (#7677)

2026-05-01 11:30:32 -04:00

test_subgraph_persistence_async.py

chore: add tests to confirm expected subgraph persistence behavior (#6943)

2026-02-26 13:33:46 -05:00

test_subgraph_persistence.py

chore: add tests to confirm expected subgraph persistence behavior (#6943)

2026-02-26 13:33:46 -05:00

test_time_travel_async.py

fix: time travel when going back to interrupt node (#7498)

2026-04-16 08:29:48 -04:00

test_time_travel.py

feat(prebuilt): allow ToolNode tools to return list[Command | ToolMessage] (#7596)

2026-04-23 13:37:45 -07:00

test_tool_stream_handler.py

feat(langgraph): add streaming transformer infrastructure and tests (#7519)

2026-04-28 20:29:21 +00:00

test_tracing_interops.py

chore: drop Python 3.9 (and syntax) (#6289)

2025-10-16 20:17:46 -04:00

test_type_checking.py

feat(langgraph): add type checking for matching node signatures vs input_schema for add_node (#5424)

2025-07-10 09:42:37 -04:00

test_utils.py

fix(langgraph): merge instead of overwrite in ensure_config for callbacks, tags, metadata, configurable (#7926)

2026-05-29 09:40:22 -04:00