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Author SHA1 Message Date
Sydney Runkle e735645264 style: apply ruff format fixes 2026-04-29 14:15:02 -04:00
Sydney Runkle ee5fd582b8 refactor: remove InMemorySaver.prune — out of scope for DeltaChannel PR 
prune was not previously implemented on InMemorySaver (raised
NotImplementedError); adding a DeltaChannel-aware implementation is a
follow-up concern, not required for the core feature.
 2026-04-29 14:01:41 -04:00
Sydney Runkle 9a5f844e1b refactor: remove unnecessary variable extractions from checkpoint load paths 
Revert pure-style refactors (local variable hoisting, redundant null
guards, Sequence/list annotation change) that cluttered the DeltaChannel
PR diff without any semantic change.
 2026-04-29 13:53:53 -04:00
Sydney RunkleandClaude Sonnet 4.6 7439ab2e5b feat(serde): DELTA_SENTINEL via msgpack ext 8; remove "delta" type tag 
DELTA_SENTINEL is now serialized as a msgpack ext code (EXT_DELTA_SENTINEL=8)
alongside _DeltaSnapshot (ext 7), keeping both sentinel types in the same
codec path. The dedicated "delta" string type tag and its special-case in
dumps_typed/loads_typed are removed — no migration needed since this is
introduced fresh.

InMemorySaver.prune() updated to deserialize blobs and check `is DELTA_SENTINEL`
rather than comparing the raw type tag string, making it codec-agnostic.

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
 2026-04-29 09:59:56 -04:00
Sydney RunkleandGitHub c2c1e4412d Merge branch 'main' into delta-channel-writes-based 2026-04-29 09:43:48 -04:00
Sydney RunkleandClaude Sonnet 4.6 e37e68d631 fix(checkpoint): remove unused _DeltaSnapshot import 
Dropped after removing the _DeltaSnapshot special-case in the seed-terminator
logic — write-collection ordering fix handles both blob types uniformly.

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
 2026-04-28 17:58:46 -04:00
Sydney RunkleandClaude Sonnet 4.6 f879e49a96 fix(checkpoint): diamond pattern replaces ContextVar re-entrancy guard 
Adds _get_tuple_raw / _aget_tuple_raw as the pure-storage-read layer that
_get_channel_writes_history calls instead of get_tuple. Default
implementation delegates to get_tuple for full backward compatibility — no
changes needed for existing savers whose get_tuple is a plain storage query.

Savers that perform channel hydration inside get_tuple can override
_get_tuple_raw with the raw read to structurally break any possible cycle;
a Python RecursionError surfaces the problem if they don't, rather than the
previous silent data corruption (returning empty writes).

Also fixes write-collection ordering in the reference implementation: pending
writes from the seed-terminator ancestor were silently dropped because the
terminator check fired before the collection loop. Writes are now collected
first so the seed ancestor's transition writes are included in reconstruction.

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
 2026-04-28 17:54:58 -04:00
Sydney RunkleGitHubClaude Sonnet 4.6
 		9abee46990 feat(langgraph): DeltaChannel snapshot_frequency — bounded read depth with write-count snapshotting (#7634) 
## Summary

Builds on #7586. Adds `snapshot_frequency: int | None` to
`DeltaChannel`, letting users trade storage for bounded read depth. Also
promotes `channels/_delta.py` from private to public
(`channels/delta.py`).

### How it works

Every Nth **pregel step**, `create_checkpoint` writes a `_DeltaSnapshot`
blob instead of `DELTA_SENTINEL`. The ancestor walk in
`_get_channel_writes_history` terminates at the snapshot rather than
walking the full chain, bounding replay to at most N steps.

Snapshots are **eager**: fired even on steps where the channel had no
write (via a `get_next_version` version bump), so the depth bound holds
unconditionally — no risk of the cadence drifting if a channel happens
to be silent at a snapshot step.

### Storage formula

| Mode | Blob storage | Read depth |
|------|-------------|------------|
| `snapshot_frequency=None` (pure delta) | O(N) — sentinels only | O(N)
steps |
| `snapshot_frequency=K` | O(N²/K) — periodic snapshots of growing size
| O(K) steps |
| add_messages / BinOp | O(N²) — full blob every step | O(1) |

At N turns with ~400 char/msg messages, total snapshot storage ≈ N²/(2K)
× avg_msg_size, since each snapshot blob grows linearly with accumulated
messages.

### Key design decisions

- **Step-based**: `snapshot_frequency=K` means "snapshot every K pregel
steps." `create_checkpoint` has the step number; the channel itself
doesn't need to track writes.
- **Eager**: version-bumped via `get_next_version` even on non-write
steps so `put()` always stores the blob.
- **`_DeltaSnapshot` NamedTuple + msgpack ext type**
(`EXT_DELTA_SNAPSHOT = 7`): serde type tag dispatches in
`from_checkpoint` — no dict key inspection, no collision risk.
- **`from_checkpoint` semantics**: `_DeltaSnapshot` → restore value
directly (no replay needed); `DELTA_SENTINEL` / `MISSING` → replay from
ancestor writes; plain value → pre-migration BinOp blob.
- **InMemorySaver and PostgresSaver updated**:
`_get_channel_writes_history` collects the snapshot ancestor's
pending_writes before terminating (they encode the *next* step's
transition, unlike pre-delta migration blobs which subsume their own
writes).
- **`snapshot_frequency=None`** is the pure-delta default (replaces
`math.inf`).

### Benchmark results (InMemory, ~400 char/msg)

**Storage**

| turns | ctx | freq=1 | freq=5 | freq=10 | freq=50 | freq=inf |
|------:|----:|-------:|-------:|--------:|--------:|---------:|
| 50 | ~10K tok | 5.9 MB | 1.2 MB | 601.3 KB | 119.8 KB | 29.5 KB |
| 100 | ~20K tok | 23.7 MB | 4.8 MB | 2.4 MB | 475.8 KB | 58.4 KB |
| 200 | ~40K tok | 94.6 MB | 19.0 MB | 9.5 MB | 1.9 MB | 116.4 KB |
| 500 | ~100K tok | 591.5 MB | 118.4 MB | 59.2 MB | 11.8 MB | 290.3 KB |

**Read latency** (avg of 5 `get_state` calls)

| turns | ctx | freq=1 | freq=5 | freq=10 | freq=50 | freq=inf |
|------:|----:|-------:|-------:|--------:|--------:|---------:|
| 50 | ~10K tok | 0.4ms | 0.4ms | 0.7ms | 0.9ms | 1.8ms |
| 100 | ~20K tok | 0.7ms | 0.9ms | 1.0ms | 1.7ms | 5.7ms |
| 200 | ~40K tok | 1.5ms | 1.7ms | 4.5ms | 3.7ms | 20.1ms |
| 500 | ~100K tok | 3.6ms | 4.2ms | 4.4ms | 9.0ms | 110.3ms |

**Per-invoke write latency**

| turns | ctx | freq=1 | freq=5 | freq=10 | freq=50 | freq=inf |
|------:|----:|-------:|-------:|--------:|--------:|---------:|
| 50 | ~10K tok | 1.5ms | 1.1ms | 1.1ms | 1.3ms | 1.7ms |
| 100 | ~20K tok | 2.5ms | 1.6ms | 1.5ms | 1.7ms | 3.3ms |
| 200 | ~40K tok | 3.4ms | 2.3ms | 2.2ms | 2.5ms | 8.3ms |
| 500 | ~100K tok | 6.2ms | 4.2ms | 3.6ms | 4.1ms | 39.2ms |

## Test plan

- [x] `make format` / `make lint` clean across `langgraph`,
`checkpoint`, `checkpoint-postgres`
- [x] `tests/test_channels.py` — 37 passing including step-based and
eager-snapshot tests
- [x] `tests/test_delta_channel_migration.py` — all passing
- [x] Full suite: 1387 passing, 6 pre-existing failures unrelated to
this branch

---------

Co-authored-by: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
 2026-04-28 16:42:48 -04:00
Sydney RunkleandGitHub 372d54dc4f release(checkpoint): 4.0.3 (#7625) 
## Summary

Bumps `langgraph-checkpoint` `4.0.2` → `4.0.3` and updates all
downstream `uv.lock` files.

## Changes since 4.0.2

- fix(checkpoint): revive lc=2 JSON blobs for safe types without
allowlist (#7582)
- chore: dedup warnings (#7257)
- chore(deps): bump langsmith from 0.6.4 to 0.7.31 (#7525)
 2026-04-27 10:27:56 -04:00
Sydney RunkleGitHubClaude Sonnet 4.6
 		85cd64ed69 fix(checkpoint): revive lc=2 JSON blobs for safe types without allowlist (#7582) 
## Summary

Fixes #7498 — `MESSAGE_COERCION_FAILURE` when resuming threads
checkpointed before v1.0.1.

**Root cause:** PR #6269 (v1.0.1) added an `_allowed_json_modules`
security gate to `JsonPlusSerializer._reviver`. The gate defaults to
`None`, so old `"json"`-format checkpoint blobs containing `lc=2`
constructor dicts (the pre-msgpack serialization format for pydantic
objects like `HumanMessage`) are now returned as raw dicts instead of
being reconstructed. Those raw dicts reach `add_messages →
convert_to_messages`, which sees `type="constructor"` and raises
`MESSAGE_COERCION_FAILURE`. Fresh first-turn messages are unaffected
because current `dumps_typed` only writes `"msgpack"` blobs.

**Fix:** `_reviver` now reconstructs `lc=2` blobs whose target class is
already in `SAFE_MSGPACK_TYPES` — the same curated allowlist already
used by the msgpack deserialization path (includes all standard
LangChain message types). Unknown classes are still blocked, preserving
the security intent of #6269.

## Changes

- `libs/checkpoint/langgraph/checkpoint/serde/jsonplus.py` — add
`_is_safe_json_type()` helper; update `_reviver` and
`_check_allowed_json_modules` to allow safe types without an explicit
allowlist
- `libs/checkpoint/tests/test_jsonplus.py` — two new regression tests:
safe-type `lc=2` blobs revive correctly; unknown-type `lc=2` blobs stay
blocked

## Test plan

- [ ] `test_lc2_json_safe_type_revives_without_allowlist` —
`HumanMessage`/`AIMessage` lc=2 JSON blobs round-trip to proper
`BaseMessage` objects with no allowlist configured
- [ ] `test_lc2_json_unknown_type_stays_blocked_without_allowlist` —
`pprint.pprint` lc=2 blob still returns raw dict (not reconstructed)
- [ ] `test_deserde_invalid_module` — existing behaviour unchanged
- [ ] Full `test_jsonplus.py` suite: 93/93 passing

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-27 09:08:47 -04:00
Sydney RunkleandClaude Opus 4.7 3a7ed5b454 refactor(delta-channel): honest data model, private experimental API 
Restructure DeltaChannel reconstruction so the hydration path matches
pregel's storage axes (blobs + writes) without leaking internal DTOs
into the public checkpoint contract.

Key changes:

* Deleted `DeltaChannelWrites` dataclass and `SEED_UNSET` sentinel.
  Reconstruction data no longer flows through `Checkpoint.channel_values`
  as a wrapped DTO — that field now carries a value or `DELTA_SENTINEL`,
  never a reconstruction shape.
* Added private `_ChannelWritesHistory(seed: Any, writes: list[PendingWrite])`
  NamedTuple as the return type for the new storage-level query.
* Added private, experimental `_get_channel_writes_history` /
  `_aget_channel_writes_history` on `BaseCheckpointSaver` — reference
  impl via `get_tuple` + `parent_config` walk, overridden on
  `InMemorySaver` / `PostgresSaver` / `AsyncPostgresSaver` for perf.
  Fixes a latent migration bug in the base fallback (now inspects
  ancestor `channel_values` for pre-delta seed).
* `DeltaChannel.from_checkpoint(seed)` simplified to two cases
  (sentinel/MISSING → empty, else → seed). New `replay_writes` method
  folds `list[PendingWrite]` through the reducer.
* Delta hydration consolidated inside `channels_from_checkpoint` via
  optional `saver` + `config` kwargs (+ async mirror
  `achannels_from_checkpoint`). All six pregel call sites updated.
  `get_tuple` no longer patches `channel_values` — removed
  `_resolve_delta_channels` (memory) and per-tuple reconstruction from
  `_load_checkpoint_tuple` (postgres sync + async).
* Hydration short-circuits on the target's own blob: if
  `channel_values[k]` is a real value (pre-migration tip, `update_state`
  result), use it directly. Only walks ancestors when the target holds
  sentinel or is missing. Fixes a correctness bug where migration-tip
  and `update_state` values would be lost.
* New test_delta_channel_migration.py: 10 scenarios covering
  BinaryOperatorAggregate → DeltaChannel migration (basic + async,
  time-travel, fork, `update_state`, tip-of-pre-migration, base-saver
  fallback parity, cross-thread isolation).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-04-23 14:15:02 -04:00
Sydney Runkle 31ef0e942a refactor(delta-channel): drop snapshot_every and saver Overwrite terminator 
snapshot_every was a knob for bounding reconstruction cost on deep threads.
Benchmarks (notes/add_messages_replay_problem.md + scratch work on
sr/add-messages-replay-bench) showed the add_messages fast-path
(optimize/add-messages-fast-path) closes the quadratic replay cost for
threads under ~1000 turns, where the crossover to snapshots makes sense.
For deeper threads we'll ship a first-class compaction primitive instead.

Removals:

* DeltaChannel: snapshot_every ctor param, _writes_since_snapshot counter,
  should_snapshot() / snapshot_write() methods, counter threading through
  _apply_write / update / from_checkpoint / copy.
* Pregel loop: post-checkpoint snapshot-injection block and
  SNAPSHOT_TASK_ID import + constant.
* Checkpoint base: _overwrite_types() helper and the ancestor-walk
  short-circuit on user-emitted Overwrite in sync + async
  get_channel_writes.
* InMemory + Postgres savers: same walk-terminator shortcut. The
  pre-delta blob terminator (seed-from-ancestor-blob) stays — it's
  required for migration correctness, not a snapshot optimization.
* Tests for all of the above.

Preserved:

* Channel-level Overwrite semantics in DeltaChannel / BinOpAggregate:
  Overwrite still resets the value at reducer level; same-super-step
  dedup and InvalidUpdateError on multiple Overwrites still enforced.
* Pre-delta migration seeding.
 2026-04-23 09:54:12 -04:00
Sydney Runkle 9e330c96dc contextvar 2026-04-23 07:42:51 -04:00
Sydney RunkleandClaude Opus 4.7 cd8fad5905 fix(delta-channel): target-exclusion, pre-delta seed, one-query postgres walk 
Four fixes from an independent review of the reconstruction pipeline, plus
a structural cleanup:

1. Ancestor walk excludes the target checkpoint itself (matches pregel:
   writes stored under checkpoint_id=T are pending for the NEXT step and
   applied separately via apply_writes). Memory saver previously included
   them, diverging from Postgres and causing pending writes to be folded
   into the reconstructed snapshot — visible via get_state during
   interrupts and time-travel into a non-leaf checkpoint.

2. Pre-delta blob terminator. When the walk hits an ancestor whose blob
   for the channel is a real value (not DELTA_SENTINEL), bind that blob
   as DeltaChannelWrites.seed and stop. Without this, threads migrated
   from pre-delta storage would replay ancestor writes to the root
   forever AND lose any value that lived only in the old blob
   (e.g. from update_state). Per-ancestor, the blob is checked BEFORE
   its writes — a pre-delta blob subsumes writes at the same checkpoint,
   so including them would double-count.

3. Base-fallback get_channel_writes follows parent_checkpoint_id instead
   of list(before=...). The previous form returned every tuple with
   id<target, including sibling branches on forked threads.

4. seed replaces the Overwrite-wrapping hack for pre-delta values.
   DeltaChannelWrites(writes, seed=SEED_UNSET) makes the saver's
   reconstruction terminator semantically explicit; drops the lazy
   _make_overwrite import dance. User-emitted Overwrite still reset the
   chain via _apply_write as before.

Postgres: recursive CTE enumerates on-path ancestors and joins once
against checkpoint_writes and once against checkpoint_blobs for every
delta channel in the get_tuple — one roundtrip instead of the previous
3 queries × N channels.

Tests added:
- Pre-delta blob seeding (seed binding, no double-counting of ancestor
  writes at the terminator, pending-at-target excluded).
- Root checkpoint returns empty writes.
- Seed-based from_checkpoint replay (three scenarios: with writes,
  seed-only, seed=None distinct from SEED_UNSET).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-04-22 22:09:08 -04:00
Sydney Runkle acc7eda8c5 optimizations i sure hope 2026-04-22 20:47:51 -04:00
Sydney Runkle 5b7fdf5655 eh 2026-04-22 18:41:06 -04:00
Sydney Runkle 51154be4ab lint 2026-04-22 17:47:53 -04:00
Sydney Runkle 2e7edb2b60 lint 2026-04-22 17:30:22 -04:00
Sydney Runkle 325cb42f19 lint and snapshot every 2026-04-22 17:06:53 -04:00
Sydney Runkle b9fad696ec cleanup 2026-04-22 16:45:32 -04:00
Sydney RunkleandClaude Sonnet 4.6 9342ae215a chore(delta-channel): remove snapshot_every — simpler design, better storage savings 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-22 14:12:57 -04:00
Sydney Runkle d7c3616620 feat(delta-channel): store sentinel in blobs, reconstruct from checkpoint_writes 
DeltaChannel.checkpoint() now returns a zero-byte DeltaChannelSentinel
instead of duplicating delta data in checkpoint_blobs. Reconstruction
walks the parent checkpoint chain via checkpoint_writes (which already
holds per-step writes) and replays them through the operator.

In-memory benchmark (100 turns, ~20K tokens):
  storage: 10.2 MB → 40.5 KB (251x reduction)
  read:    0.6ms → 7.9ms (reconstruction cost, amortized by storage savings)

InMemorySaver and PostgresSaver override get_channel_writes() with
efficient implementations (Python dict walk and recursive CTE respectively).
The base class fallback uses self.list() with a thread-local recursion guard.
 2026-04-22 14:03:37 -04:00
Sydney Runkle 10da2326a9 chore(delta-channel): remove supports_delta_channels flag 
Rely on the runtime raise in DeltaChannel.from_checkpoint() instead of
a compile-time boolean flag. Savers that assemble DeltaChainValue inside
_load_blobs work transparently; savers that don't will pass through a raw
DeltaValue and hit a clear ValueError on first reload.

Removes: BaseCheckpointSaver.supports_delta_channels, the attribute on
InMemorySaver / PostgresSaver / AsyncPostgresSaver, the compile-time
UserWarning in StateGraph.compile(), and the associated test.
 2026-04-22 14:03:37 -04:00
Sydney Runkle 1d8364a749 latest 2026-04-22 14:03:37 -04:00
Sydney RunkleandClaude Sonnet 4.6 04b3ae7cd0 chore: rename serde type tag "diff" → "delta" for DeltaValue 
Consistent with channel/type naming (DeltaChannel, DeltaValue).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-22 14:03:37 -04:00
Sydney RunkleandClaude Sonnet 4.6 ec52520389 chore: apply format/lint fixes across checkpoint, checkpoint-postgres, prebuilt 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-22 14:03:37 -04:00
Sydney RunkleandClaude Sonnet 4.6 82fea763c5 fix: register DeltaValue in SAFE_MSGPACK_TYPES; rename _is_diff_delta; cross-saver benchmark 
- Add DeltaValue to SAFE_MSGPACK_TYPES so SQLite and other msgpack-based
  savers don't emit "Deserializing unregistered type" warnings.
- Rename _is_diff_delta → _is_delta_value (leftover from DiffChannel rename).
- Parametrize benchmark by checkpointer: runs InMemory (fast-path) and
  SQLite (get_tuple fallback) in the same table, sharing the _run_turns helper.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-22 14:03:37 -04:00
Sydney RunkleandClaude Sonnet 4.6 6cfcad18f3 fix(delta-channel): fix chain assembly and get_state paths 
- Fix InMemorySaver.get_channel_blob: use correct storage[thread_id][ns]
  nesting and deserialize the checkpoint before extracting channel_versions.
- Pass checkpoint_id to after_checkpoint() in channels_from_checkpoint so
  DeltaChannel seeds _last_checkpoint_id correctly on load; without this
  every turn broke the chain at its boundary.
- Wire _assemble_delta_channels into _prepare_state_snapshot and
  _aprepare_state_snapshot (get_state / get_state_history paths) and into
  perform_superstep / aperform_superstep (update_state paths) — previously
  only the loop __enter__ path did assembly.
- Fix test_get_channel_blob to use the correct storage structure.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-22 14:03:37 -04:00
Sydney Runkle 9969fb9737 feat(memory): implement get_channel_blob; remove diff handling from _load_blobs 2026-04-22 14:03:37 -04:00
Sydney RunkleandClaude Sonnet 4.6 4608af9615 feat(serde): diff type encodes prev_checkpoint_id; loads_typed returns DeltaValue 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-22 14:03:37 -04:00
Sydney Runkle 9beda5d3fb docs(checkpoint): expand aget_channel_blob docstring for parity 2026-04-22 14:03:37 -04:00
Sydney Runkle bbeb2759ba feat(checkpoint): DeltaValue uses prev_checkpoint_id; add get_channel_blob stubs 2026-04-22 14:03:37 -04:00
Sydney Runkle b799b95138 chore: rename DiffChannel/DiffDelta/DiffChainValue to Delta* across libs 
Renames the diff-channel types to DeltaChannel, DeltaValue, and DeltaChainValue
for consistency with the settled naming convention.
 2026-04-22 14:03:37 -04:00
Sydney RunkleandClaude Sonnet 4.6 ebd98f2e27 chore: format and lint fixes for DiffChannel implementation 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-22 14:03:36 -04:00
Sydney RunkleandClaude Sonnet 4.6 65d6ab2609 feat(checkpoint/postgres): diff chain reconstruction in _load_blobs (sync) 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-22 14:03:36 -04:00
Sydney RunkleandClaude Sonnet 4.6 e645c2a085 fix(checkpoint/memory): warn on broken diff chain, guard against cycles 
- Add logger.warning when a mid-chain blob is missing (fixes silent truncation bug)
- Add cycle guard to prevent infinite loops on corrupt blob stores
- Fix type annotation on diff_channels from dict[str, Any] to dict[str, str]

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-22 14:03:36 -04:00
Sydney RunkleandClaude Sonnet 4.6 e52b7b2d54 feat(checkpoint/memory): chain-traverse diff blobs in _load_blobs 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-22 14:03:36 -04:00
Sydney RunkleandClaude Sonnet 4.6 d0af83b746 fix(checkpoint/serde): use lazy isinstance check for DiffDelta 
Replace duck-typing check with lazy import inside _is_diff_delta helper
function to avoid module-level circular dependency while using proper
isinstance semantics.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-22 14:03:36 -04:00
Sydney RunkleandClaude Sonnet 4.5 eabf926a4f feat(checkpoint/serde): serialize DiffDelta as 'diff' type tag 
Add serde support for DiffDelta by implementing dump/load for the "diff" type tag.
This allows the checkpoint system to efficiently store delta objects by serializing
them as msgpack-encoded dicts with {"d": delta, "p": prev_version} structure.

The implementation uses runtime type checking to avoid circular imports and
leverages the existing msgpack ext hooks for proper deserialization of complex
types like LangChain messages.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2026-04-22 14:03:36 -04:00
Sydney RunkleandClaude Sonnet 4.6 6852e0478e feat(checkpoint): add DiffDelta and DiffChainValue protocol types 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-22 14:03:36 -04:00
William FHGitHubWill Fu-Hinthorn
 		f44b49b33d chore: dedup warnings (#7257) 
Co-authored-by: Will Fu-Hinthorn <will@langchain.dev>
 2026-04-17 10:13:03 -07:00
dependabot[bot]GitHubdependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 		6177c4311b chore(deps): bump langsmith from 0.6.4 to 0.7.31 in /libs/checkpoint (#7525) 
Bumps [langsmith](https://github.com/langchain-ai/langsmith-sdk) from
0.6.4 to 0.7.31.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/langchain-ai/langsmith-sdk/releases">langsmith's
releases</a>.</em></p>
<blockquote>
<h2>v0.7.31</h2>
<h2>What's Changed</h2>
<ul>
<li>chore(deps-dev): bump langchain-core from 1.2.23 to 1.2.28 in
/python by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2692">langchain-ai/langsmith-sdk#2692</a></li>
<li>chore(deps-dev): bump <code>@​anthropic-ai/sdk</code> from 0.82.0 to
0.84.0 in /js by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2684">langchain-ai/langsmith-sdk#2684</a></li>
<li>chore(deps): bump cryptography from 46.0.6 to 46.0.7 in /python by
<a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2693">langchain-ai/langsmith-sdk#2693</a></li>
<li>chore(deps-dev): bump <code>@​anthropic-ai/sdk</code> from 0.84.0 to
0.85.0 in /js by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2700">langchain-ai/langsmith-sdk#2700</a></li>
<li>feat(py): Tag OpenAI Agent Python SDK runs with ls_agent_type by <a
href="https://github.com/jacoblee93"><code>@​jacoblee93</code></a> in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2699">langchain-ai/langsmith-sdk#2699</a></li>
<li>feat(js): Adds ls_agent_type metadata to AI SDK runs by <a
href="https://github.com/jacoblee93"><code>@​jacoblee93</code></a> in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2701">langchain-ai/langsmith-sdk#2701</a></li>
<li>chore(deps-dev): bump types-tqdm from 4.67.3.20260303 to
4.67.3.20260408 in /python by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2710">langchain-ai/langsmith-sdk#2710</a></li>
<li>chore(deps): bump pnpm/action-setup from 5 to 6 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2705">langchain-ai/langsmith-sdk#2705</a></li>
<li>chore(deps): bump the py-minor-and-patch group across 1 directory
with 10 updates by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2711">langchain-ai/langsmith-sdk#2711</a></li>
<li>chore(deps-dev): bump <code>@​anthropic-ai/sdk</code> from 0.85.0 to
0.86.0 in /js by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2702">langchain-ai/langsmith-sdk#2702</a></li>
<li>chore(deps): bump actions/github-script from 8 to 9 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2706">langchain-ai/langsmith-sdk#2706</a></li>
<li>chore(deps-dev): bump the js-minor-and-patch group across 1
directory with 7 updates by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2712">langchain-ai/langsmith-sdk#2712</a></li>
<li>chore(deps-dev): bump types-psutil from 7.2.2.20260130 to
7.2.2.20260408 in /python by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2709">langchain-ai/langsmith-sdk#2709</a></li>
<li>chore(deps-dev): bump rich from 14.3.3 to 15.0.0 in /python by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2708">langchain-ai/langsmith-sdk#2708</a></li>
<li>feat: Filter kwargs from new token events by <a
href="https://github.com/jacoblee93"><code>@​jacoblee93</code></a> in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2714">langchain-ai/langsmith-sdk#2714</a></li>
<li>release(py): 0.7.31 by <a
href="https://github.com/jacoblee93"><code>@​jacoblee93</code></a> in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2716">langchain-ai/langsmith-sdk#2716</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/langchain-ai/langsmith-sdk/compare/v0.7.30...v0.7.31">https://github.com/langchain-ai/langsmith-sdk/compare/v0.7.30...v0.7.31</a></p>
<h2>v0.7.30</h2>
<h2>What's Changed</h2>
<ul>
<li>feat(python): add service feature to sandbox by <a
href="https://github.com/DanielKneipp"><code>@​DanielKneipp</code></a>
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2665">langchain-ai/langsmith-sdk#2665</a></li>
<li>fix(js): Fix prototype pollution bug in anonymizers by <a
href="https://github.com/jacoblee93"><code>@​jacoblee93</code></a> in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2690">langchain-ai/langsmith-sdk#2690</a></li>
<li>release(js): 0.5.18 by <a
href="https://github.com/jacoblee93"><code>@​jacoblee93</code></a> in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2691">langchain-ai/langsmith-sdk#2691</a></li>
<li>chore(js/sandbox): suppress warning log by <a
href="https://github.com/hntrl"><code>@​hntrl</code></a> in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2694">langchain-ai/langsmith-sdk#2694</a></li>
<li>feat(js): Add metadata to Claude Agent SDK JS tracing by <a
href="https://github.com/jacoblee93"><code>@​jacoblee93</code></a> in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2695">langchain-ai/langsmith-sdk#2695</a></li>
<li>fix(py): Fix run tree memory leak by <a
href="https://github.com/jacoblee93"><code>@​jacoblee93</code></a> in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2696">langchain-ai/langsmith-sdk#2696</a></li>
<li>release(py): 0.7.30 by <a
href="https://github.com/jacoblee93"><code>@​jacoblee93</code></a> in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2698">langchain-ai/langsmith-sdk#2698</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/langchain-ai/langsmith-sdk/compare/v0.7.29...v0.7.30">https://github.com/langchain-ai/langsmith-sdk/compare/v0.7.29...v0.7.30</a></p>
<h2>v0.7.29</h2>
<h2>What's Changed</h2>
<ul>
<li>release(js): 0.5.17 by <a
href="https://github.com/jacoblee93"><code>@​jacoblee93</code></a> in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2681">langchain-ai/langsmith-sdk#2681</a></li>
<li>feat(py): Fix race condition around Claude Agent SDK instrumentation
by <a href="https://github.com/jacoblee93"><code>@​jacoblee93</code></a>
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2685">langchain-ai/langsmith-sdk#2685</a></li>
<li>release(py): 0.7.29 by <a
href="https://github.com/jacoblee93"><code>@​jacoblee93</code></a> in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2686">langchain-ai/langsmith-sdk#2686</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/langchain-ai/langsmith-sdk/compare/v0.7.28...v0.7.29">https://github.com/langchain-ai/langsmith-sdk/compare/v0.7.28...v0.7.29</a></p>
<h2>v0.7.28</h2>
<h2>What's Changed</h2>
<ul>
<li>feat(py): Support subagent tracing in Claude Agents SDK, fix usage
and duplicate messages by <a
href="https://github.com/jacoblee93"><code>@​jacoblee93</code></a> in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2670">langchain-ai/langsmith-sdk#2670</a></li>
<li>chore(deps-dev): bump the py-minor-and-patch group across 1
directory with 11 updates by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2677">langchain-ai/langsmith-sdk#2677</a></li>
<li>chore(deps-dev): bump the js-minor-and-patch group across 1
directory with 8 updates by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2667">langchain-ai/langsmith-sdk#2667</a></li>
<li>chore(deps): bump pnpm/action-setup from 4 to 5 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/pull/2658">langchain-ai/langsmith-sdk#2658</a></li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/langchain-ai/langsmith-sdk/commit/c434999d05c00334efeba88b8bbd2de9f3afbef6"><code>c434999</code></a>
release(py): 0.7.31 (<a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/issues/2716">#2716</a>)</li>
<li><a
href="https://github.com/langchain-ai/langsmith-sdk/commit/47d7c4a783333e716395d802e7632f1f1b4744d3"><code>47d7c4a</code></a>
feat: Filter kwargs from new token events (<a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/issues/2714">#2714</a>)</li>
<li><a
href="https://github.com/langchain-ai/langsmith-sdk/commit/3c57445b543c9a2f86db52024ea2c998bfc2ffab"><code>3c57445</code></a>
chore(deps-dev): bump rich from 14.3.3 to 15.0.0 in /python (<a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/issues/2708">#2708</a>)</li>
<li><a
href="https://github.com/langchain-ai/langsmith-sdk/commit/2be6cd01a2b6e35e811488d3561e7b0b57b06f63"><code>2be6cd0</code></a>
chore(deps-dev): bump types-psutil from 7.2.2.20260130 to 7.2.2.20260408
in /...</li>
<li><a
href="https://github.com/langchain-ai/langsmith-sdk/commit/b8b6ca32d43c919c07a4e13c99a83bcaab8accb0"><code>b8b6ca3</code></a>
chore(deps-dev): bump the js-minor-and-patch group across 1 directory
with 7 ...</li>
<li><a
href="https://github.com/langchain-ai/langsmith-sdk/commit/9897cb33da7698291637f268edd833ca3e1adde6"><code>9897cb3</code></a>
chore(deps): bump actions/github-script from 8 to 9 (<a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/issues/2706">#2706</a>)</li>
<li><a
href="https://github.com/langchain-ai/langsmith-sdk/commit/572c0184285747e027a796e03ea6c9ba171e09a6"><code>572c018</code></a>
chore(deps-dev): bump <code>@​anthropic-ai/sdk</code> from 0.85.0 to
0.86.0 in /js (<a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/issues/2702">#2702</a>)</li>
<li><a
href="https://github.com/langchain-ai/langsmith-sdk/commit/57447524c88b6bba2775161aa449da32fb8e5c42"><code>5744752</code></a>
chore(deps): bump the py-minor-and-patch group across 1 directory with
10 upd...</li>
<li><a
href="https://github.com/langchain-ai/langsmith-sdk/commit/960cae7f490e9ccbe428e6b56c8047bdb7b942a5"><code>960cae7</code></a>
chore(deps): bump pnpm/action-setup from 5 to 6 (<a
href="https://redirect.github.com/langchain-ai/langsmith-sdk/issues/2705">#2705</a>)</li>
<li><a
href="https://github.com/langchain-ai/langsmith-sdk/commit/9370e7670abf7f8f9a36fbb72250bcfd2f91e7c6"><code>9370e76</code></a>
chore(deps-dev): bump types-tqdm from 4.67.3.20260303 to 4.67.3.20260408
in /...</li>
<li>Additional commits viewable in <a
href="https://github.com/langchain-ai/langsmith-sdk/compare/v0.6.4...v0.7.31">compare
view</a></li>
</ul>
</details>
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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2026-04-15 19:37:35 -07:00
William FHGitHubWill Fu-Hinthorn
 		25470ea435 release(checkpoint): 4.0.2 (#7518) 
Co-authored-by: Will Fu-Hinthorn <will@langchain.dev>
 2026-04-15 20:52:57 +00:00
John KennedyGitHubClaude Opus 4.6
 		7fa49bd550 docs: document LANGGRAPH_STRICT_MSGPACK for checkpoint security (#7517) 
## Summary

- Add `LANGGRAPH_STRICT_MSGPACK=true` guidance to `JsonPlusSerializer`
docstring and inline comments
- Update the warning message emitted for unregistered types to mention
the env var
- Add module docstring to `_msgpack.py` explaining the safety controls
- Add Security sections to checkpoint, checkpoint-postgres, and
checkpoint-sqlite READMEs

## Context

Multiple security advisories have reported the same msgpack
deserialization pattern (`ext_hook` → `importlib.import_module` →
`getattr` → call). The underlying behavior is documented in the repo's
threat model as T1, but the `LANGGRAPH_STRICT_MSGPACK` env var that
mitigates it is not surfaced in user-facing docs, docstrings, or warning
messages. This PR closes that gap.

## Test plan

- [x] Verify READMEs render correctly on GitHub (callout boxes use `>
[!IMPORTANT]` syntax)
- [x] Verify `JsonPlusSerializer` docstring renders in IDE tooltips
- [x] Confirm warning message format: `LANGGRAPH_STRICT_MSGPACK=true
PYTHON_CMD 2>&1 | grep -i strict`

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-15 13:05:55 -07:00
dependabot[bot]GitHubdependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 		ba5e3c4a9b chore(deps): bump pytest from 9.0.2 to 9.0.3 in /libs/checkpoint (#7506) 
Bumps [pytest](https://github.com/pytest-dev/pytest) from 9.0.2 to
9.0.3.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/pytest-dev/pytest/releases">pytest's
releases</a>.</em></p>
<blockquote>
<h2>9.0.3</h2>
<h1>pytest 9.0.3 (2026-04-07)</h1>
<h2>Bug fixes</h2>
<ul>
<li>
<p><a
href="https://redirect.github.com/pytest-dev/pytest/issues/12444">#12444</a>:
Fixed <code>pytest.approx</code> which now correctly takes into account
<code>~collections.abc.Mapping</code> keys order to compare them.</p>
</li>
<li>
<p><a
href="https://redirect.github.com/pytest-dev/pytest/issues/13634">#13634</a>:
Blocking a <code>conftest.py</code> file using the <code>-p no:</code>
option is now explicitly disallowed.</p>
<p>Previously this resulted in an internal assertion failure during
plugin loading.</p>
<p>Pytest now raises a clear <code>UsageError</code> explaining that
conftest files are not plugins and cannot be disabled via
<code>-p</code>.</p>
</li>
<li>
<p><a
href="https://redirect.github.com/pytest-dev/pytest/issues/13734">#13734</a>:
Fixed crash when a test raises an exceptiongroup with
<code>__tracebackhide__ = True</code>.</p>
</li>
<li>
<p><a
href="https://redirect.github.com/pytest-dev/pytest/issues/14195">#14195</a>:
Fixed an issue where non-string messages passed to <!-- raw HTML omitted
-->unittest.TestCase.subTest()<!-- raw HTML omitted --> were not
printed.</p>
</li>
<li>
<p><a
href="https://redirect.github.com/pytest-dev/pytest/issues/14343">#14343</a>:
Fixed use of insecure temporary directory (CVE-2025-71176).</p>
</li>
</ul>
<h2>Improved documentation</h2>
<ul>
<li><a
href="https://redirect.github.com/pytest-dev/pytest/issues/13388">#13388</a>:
Clarified documentation for <code>-p</code> vs
<code>PYTEST_PLUGINS</code> plugin loading and fixed an incorrect
<code>-p</code> example.</li>
<li><a
href="https://redirect.github.com/pytest-dev/pytest/issues/13731">#13731</a>:
Clarified that capture fixtures (e.g. <code>capsys</code> and
<code>capfd</code>) take precedence over the <code>-s</code> /
<code>--capture=no</code> command-line options in <code>Accessing
captured output from a test function
&lt;accessing-captured-output&gt;</code>.</li>
<li><a
href="https://redirect.github.com/pytest-dev/pytest/issues/14088">#14088</a>:
Clarified that the default <code>pytest_collection</code> hook sets
<code>session.items</code> before it calls
<code>pytest_collection_finish</code>, not after.</li>
<li><a
href="https://redirect.github.com/pytest-dev/pytest/issues/14255">#14255</a>:
TOML integer log levels must be quoted: Updating reference
documentation.</li>
</ul>
<h2>Contributor-facing changes</h2>
<ul>
<li>
<p><a
href="https://redirect.github.com/pytest-dev/pytest/issues/12689">#12689</a>:
The test reports are now published to Codecov from GitHub Actions.
The test statistics is visible <a
href="https://app.codecov.io/gh/pytest-dev/pytest/tests">on the web
interface</a>.</p>
<p>-- by <code>aleguy02</code></p>
</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/pytest-dev/pytest/commit/a7d58d7a21b78581e636bbbdea13c66ad1657c1e"><code>a7d58d7</code></a>
Prepare release version 9.0.3</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/089d98199c253d8f89a040243bc4f2aa6cd5ab22"><code>089d981</code></a>
Merge pull request <a
href="https://redirect.github.com/pytest-dev/pytest/issues/14366">#14366</a>
from bluetech/revert-14193-backport</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/8127eaf4ab7f6b2fdd0dc1b38343ec97aeef05ac"><code>8127eaf</code></a>
Revert &quot;Fix: assertrepr_compare respects dict insertion order (<a
href="https://redirect.github.com/pytest-dev/pytest/issues/14050">#14050</a>)
(<a
href="https://redirect.github.com/pytest-dev/pytest/issues/14193">#14193</a>)&quot;</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/99a7e6029e7a6e8d53e5df114b1346e035370241"><code>99a7e60</code></a>
Merge pull request <a
href="https://redirect.github.com/pytest-dev/pytest/issues/14363">#14363</a>
from pytest-dev/patchback/backports/9.0.x/95d8423bd...</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/ddee02a578da30dd43aedc39c1c1f1aaadfcee95"><code>ddee02a</code></a>
Merge pull request <a
href="https://redirect.github.com/pytest-dev/pytest/issues/14343">#14343</a>
from bluetech/cve-2025-71176-simple</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/74eac6916fee34726cb194f16c516e96fbd29619"><code>74eac69</code></a>
doc: Update training info (<a
href="https://redirect.github.com/pytest-dev/pytest/issues/14298">#14298</a>)
(<a
href="https://redirect.github.com/pytest-dev/pytest/issues/14301">#14301</a>)</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/f92dee777cfdb77d1c43633d02766ddf1f07c869"><code>f92dee7</code></a>
Merge pull request <a
href="https://redirect.github.com/pytest-dev/pytest/issues/14267">#14267</a>
from pytest-dev/patchback/backports/9.0.x/d6fa26c62...</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/7ee58acc8777c31ac6cf388d01addf5a414a7439"><code>7ee58ac</code></a>
Merge pull request <a
href="https://redirect.github.com/pytest-dev/pytest/issues/12378">#12378</a>
from Pierre-Sassoulas/fix-implicit-str-concat-and-d...</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/37da870d37e3a2f5177cae075c7b9ae279432bf8"><code>37da870</code></a>
Merge pull request <a
href="https://redirect.github.com/pytest-dev/pytest/issues/14259">#14259</a>
from mitre88/patch-4 (<a
href="https://redirect.github.com/pytest-dev/pytest/issues/14268">#14268</a>)</li>
<li><a
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Add explanation for string context diffs (<a
href="https://redirect.github.com/pytest-dev/pytest/issues/14257">#14257</a>)
(<a
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dependabot[bot]GitHubdependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>John Kennedy
 		1142ebf921 chore(deps): bump langchain-core from 1.2.23 to 1.2.28 in /libs/checkpoint (#7453) 
Bumps [langchain-core](https://github.com/langchain-ai/langchain) from
1.2.23 to 1.2.28.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/langchain-ai/langchain/releases">langchain-core's
releases</a>.</em></p>
<blockquote>
<h2>langchain-core==1.2.28</h2>
<p>Changes since langchain-core==1.2.27</p>
<p>release(core): release 1.2.28 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36614">#36614</a>)
fix(core): add more sanitization to templates (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36612">#36612</a>)</p>
<h2>langchain-core==1.2.27</h2>
<p>Changes since langchain-core==1.2.26</p>
<p>release(core): 1.2.27 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36586">#36586</a>)
fix(core): handle symlinks in deprecated prompt save path (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36585">#36585</a>)
chore: add comment explaining <code>pygments&gt;=2.20.0</code> (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36570">#36570</a>)</p>
<p>Credit to Jeff Ponte (<a
href="https://github.com/JDP-Security"><code>@​JDP-Security</code></a>)
for reporting the symlink resolution issue in <a
href="https://redirect.github.com/langchain-ai/langchain/issues/36585">#36585</a>.</p>
<h2>langchain-core==1.2.26</h2>
<p>Changes since langchain-core==1.2.25</p>
<p>release(core): 1.2.26 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36511">#36511</a>)
fix(core): add init validator and serialization mappings for Bedrock
models (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/34510">#34510</a>)
feat(core): add <code>ChatBaseten</code> to serializable mapping (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36510">#36510</a>)
chore(core): drop <code>gpt-3.5-turbo</code> from docstrings (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36497">#36497</a>)
fix(core): correct parameter names in filter_messages docstring example
(<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36462">#36462</a>)</p>
<h2>langchain-core==1.2.25</h2>
<p>Changes since langchain-core==1.2.24</p>
<p>release(core): 1.2.25 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36473">#36473</a>)
fix(core): harden check for txt files in deprecated prompt loading
functions (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36471">#36471</a>)
fix(core): fixed typos in the documentation (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36459">#36459</a>)</p>
<p>Credit to Jeff Ponte (<a
href="https://github.com/JDP-Security"><code>@​JDP-Security</code></a>)
for reporting the symlink resolution issue resolved in <a
href="https://redirect.github.com/langchain-ai/langchain/issues/36471">#36471</a>.</p>
<h2>langchain-core==1.2.24</h2>
<p>Changes since langchain-core==1.2.23</p>
<p>release(core): 1.2.24 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36434">#36434</a>)
feat(core): impute placeholder filenames for OpenAI file inputs (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36433">#36433</a>)
chore: pygments&gt;=2.20.0 across all packages (CVE-2026-4539) (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36385">#36385</a>)
fix(core): add &quot;computer&quot; to _WellKnownOpenAITools (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36261">#36261</a>)</p>
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</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/langchain-ai/langchain/commit/dd7c3eb3a4acfc834b038ec9dbde94478c66776e"><code>dd7c3eb</code></a>
release(core): release 1.2.28 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36614">#36614</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/af2ed47c6f008cdd551f3c0d87db3774c8dfe258"><code>af2ed47</code></a>
fix(core): add more sanitization to templates (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36612">#36612</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/7e5858d8078124f98f10102da21414689467c132"><code>7e5858d</code></a>
release(standard-tests): 1.1.6 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36610">#36610</a>)</li>
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href="https://github.com/langchain-ai/langchain/commit/fe99cb29123b704a90f5c8587a757def3b1471e0"><code>fe99cb2</code></a>
fix(standard-tests): update standard tests for sandbox backends (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36036">#36036</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/65bbd47cb2721c51ef8638f9e7da35247c4bfdde"><code>65bbd47</code></a>
chore(model-profiles): refresh model profile data (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36596">#36596</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/64864041168606535dfbd39055c0dca3dd61b5ba"><code>6486404</code></a>
release(core): 1.2.27 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36586">#36586</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/7629c747260cbaed7ca55466d5b9e1b520a7de77"><code>7629c74</code></a>
fix(core): handle symlinks in deprecated prompt save path (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36585">#36585</a>)</li>
<li><a
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ci: convert working-directory to validated dropdown (<a
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release(ollama): 1.1.0 (<a
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feat(ollama): support <code>response_format</code> (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/34612">#34612</a>)</li>
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dependabot[bot]GitHubdependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 		4811d42614 chore(deps): bump the minor-and-patch group in /libs/checkpoint with 3 updates (#7373) 
Bumps the minor-and-patch group in /libs/checkpoint with 3 updates:
[langchain-core](https://github.com/langchain-ai/langchain),
[ruff](https://github.com/astral-sh/ruff) and
[mypy](https://github.com/python/mypy).

Updates `langchain-core` from 1.2.22 to 1.2.23
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/langchain-ai/langchain/releases">langchain-core's
releases</a>.</em></p>
<blockquote>
<h2>langchain-core==1.2.23</h2>
<p>Changes since langchain-core==1.2.22</p>
<p>release(core): 1.2.23 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36323">#36323</a>)
revert: Revert &quot;fix(core): trace invocation params in
metadata&quot; (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36322">#36322</a>)
chore: bump requests from 2.32.5 to 2.33.0 in /libs/core (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36243">#36243</a>)</p>
</blockquote>
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<details>
<summary>Commits</summary>
<ul>
<li><a
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release(core): 1.2.23 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36323">#36323</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/389f7ad1bc15123b8b901e61d0a1785b0a14815f"><code>389f7ad</code></a>
revert: Revert &quot;fix(core): trace invocation params in
metadata&quot; (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36322">#36322</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/475408fa620996e1958d18a0789ed5bf9fdee054"><code>475408f</code></a>
fix(langchain): recognize ChatAnthropicVertex in
_get_approximate_token_count...</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/1545dbfa174c4dcf1d9a8618da59df480b33e235"><code>1545dbf</code></a>
chore(langchain): remove unnecessary description for toods list as a
group (#...</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/494b760028dfedddc1b91ad79f80a05d393d277e"><code>494b760</code></a>
fix(chroma): fix Python 3.14 support in langchain-chroma (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36199">#36199</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/c7a677bba511d7f3f5c36f9384ae6ba150866e04"><code>c7a677b</code></a>
chore(langchain): add async implementation to todolist and test (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36313">#36313</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/03515881176fddba919e3592e0a41cbc9806fdb8"><code>0351588</code></a>
chore: harden language in ci (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36314">#36314</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/954a23094d15b91ae2137cbfabd3870cb8853a5e"><code>954a230</code></a>
chore(langchain): speed up todo list middleware init (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36311">#36311</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/89cd0caa54d541e33ae87224c8e277bcbb026020"><code>89cd0ca</code></a>
docs: fix grammatical error in development guidelines (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36225">#36225</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/2aeeb58ef11e74ab98f869d6ae5c2ae04721be06"><code>2aeeb58</code></a>
chore: bump requests from 2.32.5 to 2.33.0 in /libs/core (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36243">#36243</a>)</li>
<li>Additional commits viewable in <a
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</details>
<br />

Updates `ruff` from 0.15.7 to 0.15.8
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/astral-sh/ruff/releases">ruff's
releases</a>.</em></p>
<blockquote>
<h2>0.15.8</h2>
<h2>Release Notes</h2>
<p>Released on 2026-03-26.</p>
<h3>Preview features</h3>
<ul>
<li>[<code>ruff</code>] New rule <code>unnecessary-if</code>
(<code>RUF050</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24114">#24114</a>)</li>
<li>[<code>ruff</code>] New rule <code>useless-finally</code>
(<code>RUF072</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24165">#24165</a>)</li>
<li>[<code>ruff</code>] New rule <code>f-string-percent-format</code>
(<code>RUF073</code>): warn when using <code>%</code> operator on an
f-string (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24162">#24162</a>)</li>
<li>[<code>pyflakes</code>] Recognize <code>frozendict</code> as a
builtin for Python 3.15+ (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24100">#24100</a>)</li>
</ul>
<h3>Bug fixes</h3>
<ul>
<li>[<code>flake8-async</code>] Use fully-qualified
<code>anyio.lowlevel</code> import in autofix (<code>ASYNC115</code>)
(<a
href="https://redirect.github.com/astral-sh/ruff/pull/24166">#24166</a>)</li>
<li>[<code>flake8-bandit</code>] Check tuple arguments for partial paths
in <code>S607</code> (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24080">#24080</a>)</li>
<li>[<code>pyflakes</code>] Skip <code>undefined-name</code>
(<code>F821</code>) for conditionally deleted variables (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24088">#24088</a>)</li>
<li><code>E501</code>/<code>W505</code>/formatter: Exclude nested pragma
comments from line width calculation (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24071">#24071</a>)</li>
<li>Fix <code>%foo?</code> parsing in IPython assignment expressions (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24152">#24152</a>)</li>
<li><code>analyze graph</code>: resolve string imports that reference
attributes, not just modules (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24058">#24058</a>)</li>
</ul>
<h3>Rule changes</h3>
<ul>
<li>[<code>eradicate</code>] ignore <code>ty: ignore</code> comments in
<code>ERA001</code> (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24192">#24192</a>)</li>
<li>[<code>flake8-bandit</code>] Treat <code>sys.executable</code> as
trusted input in <code>S603</code> (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24106">#24106</a>)</li>
<li>[<code>flake8-self</code>] Recognize <code>Self</code> annotation
and <code>self</code> assignment in <code>SLF001</code> (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24144">#24144</a>)</li>
<li>[<code>pyflakes</code>] <code>F507</code>: Fix false negative for
non-tuple RHS in <code>%</code>-formatting (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24142">#24142</a>)</li>
<li>[<code>refurb</code>] Parenthesize generator arguments in
<code>FURB142</code> fixer (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24200">#24200</a>)</li>
</ul>
<h3>Performance</h3>
<ul>
<li>Speed up diagnostic rendering (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24146">#24146</a>)</li>
</ul>
<h3>Server</h3>
<ul>
<li>Warn when Markdown files are skipped due to preview being disabled
(<a
href="https://redirect.github.com/astral-sh/ruff/pull/24150">#24150</a>)</li>
</ul>
<h3>Documentation</h3>
<ul>
<li>Clarify <code>extend-ignore</code> and <code>extend-select</code>
settings documentation (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24064">#24064</a>)</li>
<li>Mention AI policy in PR template (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24198">#24198</a>)</li>
</ul>
<h3>Other changes</h3>
<ul>
<li>Use trusted publishing for NPM packages (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24171">#24171</a>)</li>
</ul>
<h3>Contributors</h3>
<ul>
<li><a href="https://github.com/bitloi"><code>@​bitloi</code></a></li>
<li><a href="https://github.com/Sim-hu"><code>@​Sim-hu</code></a></li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md">ruff's
changelog</a>.</em></p>
<blockquote>
<h2>0.15.8</h2>
<p>Released on 2026-03-26.</p>
<h3>Preview features</h3>
<ul>
<li>[<code>ruff</code>] New rule <code>unnecessary-if</code>
(<code>RUF050</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24114">#24114</a>)</li>
<li>[<code>ruff</code>] New rule <code>useless-finally</code>
(<code>RUF072</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24165">#24165</a>)</li>
<li>[<code>ruff</code>] New rule <code>f-string-percent-format</code>
(<code>RUF073</code>): warn when using <code>%</code> operator on an
f-string (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24162">#24162</a>)</li>
<li>[<code>pyflakes</code>] Recognize <code>frozendict</code> as a
builtin for Python 3.15+ (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24100">#24100</a>)</li>
</ul>
<h3>Bug fixes</h3>
<ul>
<li>[<code>flake8-async</code>] Use fully-qualified
<code>anyio.lowlevel</code> import in autofix (<code>ASYNC115</code>)
(<a
href="https://redirect.github.com/astral-sh/ruff/pull/24166">#24166</a>)</li>
<li>[<code>flake8-bandit</code>] Check tuple arguments for partial paths
in <code>S607</code> (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24080">#24080</a>)</li>
<li>[<code>pyflakes</code>] Skip <code>undefined-name</code>
(<code>F821</code>) for conditionally deleted variables (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24088">#24088</a>)</li>
<li><code>E501</code>/<code>W505</code>/formatter: Exclude nested pragma
comments from line width calculation (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24071">#24071</a>)</li>
<li>Fix <code>%foo?</code> parsing in IPython assignment expressions (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24152">#24152</a>)</li>
<li><code>analyze graph</code>: resolve string imports that reference
attributes, not just modules (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24058">#24058</a>)</li>
</ul>
<h3>Rule changes</h3>
<ul>
<li>[<code>eradicate</code>] ignore <code>ty: ignore</code> comments in
<code>ERA001</code> (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24192">#24192</a>)</li>
<li>[<code>flake8-bandit</code>] Treat <code>sys.executable</code> as
trusted input in <code>S603</code> (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24106">#24106</a>)</li>
<li>[<code>flake8-self</code>] Recognize <code>Self</code> annotation
and <code>self</code> assignment in <code>SLF001</code> (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24144">#24144</a>)</li>
<li>[<code>pyflakes</code>] <code>F507</code>: Fix false negative for
non-tuple RHS in <code>%</code>-formatting (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24142">#24142</a>)</li>
<li>[<code>refurb</code>] Parenthesize generator arguments in
<code>FURB142</code> fixer (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24200">#24200</a>)</li>
</ul>
<h3>Performance</h3>
<ul>
<li>Speed up diagnostic rendering (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24146">#24146</a>)</li>
</ul>
<h3>Server</h3>
<ul>
<li>Warn when Markdown files are skipped due to preview being disabled
(<a
href="https://redirect.github.com/astral-sh/ruff/pull/24150">#24150</a>)</li>
</ul>
<h3>Documentation</h3>
<ul>
<li>Clarify <code>extend-ignore</code> and <code>extend-select</code>
settings documentation (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24064">#24064</a>)</li>
<li>Mention AI policy in PR template (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24198">#24198</a>)</li>
</ul>
<h3>Other changes</h3>
<ul>
<li>Use trusted publishing for NPM packages (<a
href="https://redirect.github.com/astral-sh/ruff/pull/24171">#24171</a>)</li>
</ul>
<h3>Contributors</h3>
<ul>
<li><a href="https://github.com/bitloi"><code>@​bitloi</code></a></li>
<li><a href="https://github.com/Sim-hu"><code>@​Sim-hu</code></a></li>
<li><a
href="https://github.com/mvanhorn"><code>@​mvanhorn</code></a></li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/astral-sh/ruff/commit/c2a8815842f9dc5d24ec19385eae0f1a7188b0d9"><code>c2a8815</code></a>
Release 0.15.8 (<a
href="https://redirect.github.com/astral-sh/ruff/issues/24217">#24217</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/d444d52e2b9cc8bc9a078c2bd4ff6ff993290209"><code>d444d52</code></a>
[ty] Infer lambda expressions with <code>Callable</code> type context
(<a
href="https://redirect.github.com/astral-sh/ruff/issues/22633">#22633</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/9622285ed0081fc688149f6efca87f127d9b18dd"><code>9622285</code></a>
[ty] Autocomplete arguments if in arguments node (<a
href="https://redirect.github.com/astral-sh/ruff/issues/24167">#24167</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/d81266252aaf0820346d55edbed79c4f25ba13d2"><code>d812662</code></a>
Use the <code>release</code> environment in <code>publish-docs</code>
(<a
href="https://redirect.github.com/astral-sh/ruff/issues/24214">#24214</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/eda2355832f7a9c58aef6febd3e061dc9c87509a"><code>eda2355</code></a>
[ty] Show <code>Final</code> source in final assignment diagnostic (<a
href="https://redirect.github.com/astral-sh/ruff/issues/24194">#24194</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/929eb5238c82bfadad4549ff526f02efc0163dd0"><code>929eb52</code></a>
[ty] Enforce Final attribute assignment rules for annotated and
augmented wri...</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/34998be22ec3a77d398bbd55234ef8740f768329"><code>34998be</code></a>
[ty] Fix typo in comment (<a
href="https://redirect.github.com/astral-sh/ruff/issues/24211">#24211</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/560aca0b2828ee2ff1b4bcc5c5ef1ef4ced229d2"><code>560aca0</code></a>
[ty] Minor simplifications to some benchmark code (<a
href="https://redirect.github.com/astral-sh/ruff/issues/24209">#24209</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/683bae512d03d3727a7bcdbc5a0170dafa049583"><code>683bae5</code></a>
[ty] Track non-terminal-call constraints in global scope (<a
href="https://redirect.github.com/astral-sh/ruff/issues/23245">#23245</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/4704c2a4ff3dde2fd29324346720e9516b4fe387"><code>4704c2a</code></a>
[ty] Remove unnecessary intermediate collection in
`StaticClassLiteral::field...</li>
<li>Additional commits viewable in <a
href="https://github.com/astral-sh/ruff/compare/0.15.7...0.15.8">compare
view</a></li>
</ul>
</details>
<br />

Updates `mypy` from 1.19.1 to 1.20.0
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/python/mypy/blob/master/CHANGELOG.md">mypy's
changelog</a>.</em></p>
<blockquote>
<h1>Mypy Release Notes</h1>
<h2>Next Release</h2>
<h2>Mypy 1.20</h2>
<p>We’ve just uploaded mypy 1.20.0 to the Python Package Index (<a
href="https://pypi.org/project/mypy/">PyPI</a>).
Mypy is a static type checker for Python. This release includes new
features, performance
improvements and bug fixes. You can install it as follows:</p>
<pre><code>python3 -m pip install -U mypy
</code></pre>
<p>You can read the full documentation for this release on <a
href="http://mypy.readthedocs.io">Read the Docs</a>.</p>
<h3>Planned Changes to Defaults and Flags in Mypy 2.0</h3>
<p>As a reminder, we are planning to enable
<code>--local-partial-types</code> by default in mypy 2.0, which
will likely be the next feature release. This will often require at
least minor code changes. This
option is implicitly enabled by mypy daemon, so this makes the behavior
of daemon and non-daemon
modes consistent.</p>
<p>Note that this release improves the compatibility of
<code>--local-partial-types</code> significantly to
make the switch easier (see below for more).</p>
<p>This can also be configured in a mypy configuration file (use
<code>False</code> to disable):</p>
<pre><code>local_partial_types = True
</code></pre>
<p>For more information, refer to the
<a
href="https://mypy.readthedocs.io/en/stable/command_line.html#cmdoption-mypy-local-partial-types">documentation</a>.</p>
<p>We will also enable <code>--strict-bytes</code> by default in mypy
2.0. This usually requires at most
minor code changes to adopt. For more information, refer to the
<a
href="https://mypy.readthedocs.io/en/stable/command_line.html#cmdoption-mypy-strict-bytes">documentation</a>.</p>
<p>Finally, <code>--allow-redefinition-new</code> will be renamed to
<code>--allow-redefinition</code>. If you want
to continue using the older <code>--allow-redefinition</code> semantics
which are less flexible (e.g.
limited support for conditional redefinitions), you can switch to
<code>--allow-redefinition-old</code>,
which is currently supported as an alias to the legacy
<code>--allow-redefinition</code> behavior.
To use <code>--allow-redefinition</code> in the upcoming mypy 2.0, you
can't use <code>--no-local-partial-types</code>.
For more information, refer to the
<a
href="https://mypy.readthedocs.io/en/stable/command_line.html#cmdoption-mypy-allow-redefinition-new">documentation</a>.</p>
<h3>Better Type Narrowing</h3>
<p>Mypy's implementation of narrowing has been substantially reworked.
Mypy will now narrow more
aggressively, more consistently, and more correctly. In particular, you
are likely to notice new
narrowing behavior in equality expressions (<code>==</code>),
containment expressions (<code>in</code>),</p>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/python/mypy/commit/770d3ca4997032dc3a1c4f0b468e9f58e8f38505"><code>770d3ca</code></a>
Remove +dev from version</li>
<li><a
href="https://github.com/python/mypy/commit/4738ffafc56a0d175cba06e893ffa62e756fc7e0"><code>4738ffa</code></a>
Changelog updates for 1.20 (<a
href="https://redirect.github.com/python/mypy/issues/21109">#21109</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/b4f07a717c3a239a9c77808c5550fff5f2638c96"><code>b4f07a7</code></a>
Use 'native-parser' instead of 'native-parse' for optional dependency
(<a
href="https://redirect.github.com/python/mypy/issues/21115">#21115</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/7bec7b7f791790b1c925cdcc573ced564fbbf065"><code>7bec7b7</code></a>
[mypyc] Document librt and librt.base64 (<a
href="https://redirect.github.com/python/mypy/issues/21114">#21114</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/c4825969450385cf3eb91a4fc02f273b369bc301"><code>c482596</code></a>
--allow-redefinition-new is no longer experimental (<a
href="https://redirect.github.com/python/mypy/issues/21110">#21110</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/c916ca3fa79d9324dcbe130b18e24e2b5e2d1eb5"><code>c916ca3</code></a>
sdist: include <code>misc/{diff-cache,apply-cache-diff}.py</code> for
`mypy/test/test_di...</li>
<li><a
href="https://github.com/python/mypy/commit/b137e4ed41d6178f6dbd0e609db56b8c1ad5384a"><code>b137e4e</code></a>
[mypyc] Speed up native-to-native imports within the same group (<a
href="https://redirect.github.com/python/mypy/issues/21101">#21101</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/978b711c21adadf5dae4db80127ddf270d79af5f"><code>978b711</code></a>
[mypyc] Fix range loop variable off-by-one after loop exit (<a
href="https://redirect.github.com/python/mypy/issues/21098">#21098</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/67ada30918d1a32e1935e9ac468113e0aa002b79"><code>67ada30</code></a>
[stubtest] Check runtime availability of private types not marked
`@type_chec...</li>
<li><a
href="https://github.com/python/mypy/commit/bdef6ef8734af07cab1bf0acadc1d8ab9add93c3"><code>bdef6ef</code></a>
librt cache tests: build respecting MYPY_TEST_PREFIX (<a
href="https://redirect.github.com/python/mypy/issues/21097">#21097</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/python/mypy/compare/v1.19.1...v1.20.0">compare
view</a></li>
</ul>
</details>
<br />


Dependabot will resolve any conflicts with this PR as long as you don't
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Signed-off-by: dependabot[bot] <support@github.com>
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dependabot[bot]GitHubdependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 		ec045477f8 chore(deps): bump pygments from 2.19.2 to 2.20.0 in /libs/checkpoint (#7348) 
Bumps [pygments](https://github.com/pygments/pygments) from 2.19.2 to
2.20.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/pygments/pygments/releases">pygments's
releases</a>.</em></p>
<blockquote>
<h2>2.20.0</h2>
<ul>
<li>
<p>New lexers:</p>
<ul>
<li>Rell (<a
href="https://redirect.github.com/pygments/pygments/issues/2914">#2914</a>)</li>
</ul>
</li>
<li>
<p>Updated lexers:</p>
<ul>
<li>archetype: Fix catastrophic backtracking in GUID and ID patterns (<a
href="https://redirect.github.com/pygments/pygments/issues/3064">#3064</a>)</li>
<li>ASN.1: Recognize minus sign and fix range operator (<a
href="https://redirect.github.com/pygments/pygments/issues/3014">#3014</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/3060">#3060</a>)</li>
<li>C++: Add C++26 keywords (<a
href="https://redirect.github.com/pygments/pygments/issues/2955">#2955</a>),
add integer literal suffixes (<a
href="https://redirect.github.com/pygments/pygments/issues/2966">#2966</a>)</li>
<li>ComponentPascal: Fix <code>analyse_text</code> (<a
href="https://redirect.github.com/pygments/pygments/issues/3028">#3028</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/3032">#3032</a>)</li>
<li>Coq renamed to Rocq (<a
href="https://redirect.github.com/pygments/pygments/issues/2883">#2883</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/2908">#2908</a>)</li>
<li>Cython: Various improvements (<a
href="https://redirect.github.com/pygments/pygments/issues/2932">#2932</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/2933">#2933</a>)</li>
<li>Debian control: Improve architecture parsing (<a
href="https://redirect.github.com/pygments/pygments/issues/3052">#3052</a>)</li>
<li>Devicetree: Add support for overlay/fragments (<a
href="https://redirect.github.com/pygments/pygments/issues/3021">#3021</a>),
add bytestring support (<a
href="https://redirect.github.com/pygments/pygments/issues/3022">#3022</a>),
fix catastrophic backtracking (<a
href="https://redirect.github.com/pygments/pygments/issues/3057">#3057</a>)</li>
<li>Fennel: Various improvements (<a
href="https://redirect.github.com/pygments/pygments/issues/2911">#2911</a>)</li>
<li>Haskell: Handle escape sequences in character literals (<a
href="https://redirect.github.com/pygments/pygments/issues/3069">#3069</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/1795">#1795</a>)</li>
<li>Java: Add module keywords (<a
href="https://redirect.github.com/pygments/pygments/issues/2955">#2955</a>)</li>
<li>Lean4: Add operators <code>]'</code>, <code>]?</code>,
<code>]!</code> (<a
href="https://redirect.github.com/pygments/pygments/issues/2946">#2946</a>)</li>
<li>LESS: Support single-line comments (<a
href="https://redirect.github.com/pygments/pygments/issues/3005">#3005</a>)</li>
<li>LilyPond: Update to 2.25.29 (<a
href="https://redirect.github.com/pygments/pygments/issues/2974">#2974</a>)</li>
<li>LLVM: Support C-style comments (<a
href="https://redirect.github.com/pygments/pygments/issues/3023">#3023</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/2978">#2978</a>)</li>
<li>Lua(u): Fix catastrophic backtracking (<a
href="https://redirect.github.com/pygments/pygments/issues/3047">#3047</a>)</li>
<li>Macaulay2: Update to 1.25.05 (<a
href="https://redirect.github.com/pygments/pygments/issues/2893">#2893</a>),
1.25.11 (<a
href="https://redirect.github.com/pygments/pygments/issues/2988">#2988</a>)</li>
<li>Mathematica: Various improvements (<a
href="https://redirect.github.com/pygments/pygments/issues/2957">#2957</a>)</li>
<li>meson: Add additional operators (<a
href="https://redirect.github.com/pygments/pygments/issues/2919">#2919</a>)</li>
<li>MySQL: Update keywords (<a
href="https://redirect.github.com/pygments/pygments/issues/2970">#2970</a>)</li>
<li>org-Mode: Support both schedule and deadline (<a
href="https://redirect.github.com/pygments/pygments/issues/2899">#2899</a>)</li>
<li>PHP: Add <code>__PROPERTY__</code> magic constant (<a
href="https://redirect.github.com/pygments/pygments/issues/2924">#2924</a>),
add reserved keywords (<a
href="https://redirect.github.com/pygments/pygments/issues/3002">#3002</a>)</li>
<li>PostgreSQL: Add more keywords (<a
href="https://redirect.github.com/pygments/pygments/issues/2985">#2985</a>)</li>
<li>protobuf: Fix namespace tokenization (<a
href="https://redirect.github.com/pygments/pygments/issues/2929">#2929</a>)</li>
<li>Python: Add <code>t</code>-string support (<a
href="https://redirect.github.com/pygments/pygments/issues/2973">#2973</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/3009">#3009</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/3010">#3010</a>)</li>
<li>Tablegen: Fix infinite loop (<a
href="https://redirect.github.com/pygments/pygments/issues/2972">#2972</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/2940">#2940</a>)</li>
<li>Tera Term macro: Add commands introduced in v5.3 through v5.6 (<a
href="https://redirect.github.com/pygments/pygments/issues/2951">#2951</a>)</li>
<li>TOML: Support TOML 1.1.0 (<a
href="https://redirect.github.com/pygments/pygments/issues/3026">#3026</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/3027">#3027</a>)</li>
<li>Turtle: Allow empty comment lines (<a
href="https://redirect.github.com/pygments/pygments/issues/2980">#2980</a>)</li>
<li>XML: Added <code>.xbrl</code> as file ending (<a
href="https://redirect.github.com/pygments/pygments/issues/2890">#2890</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/2891">#2891</a>)</li>
</ul>
</li>
<li>
<p>Drop Python 3.8, and add Python 3.14 as a supported version (<a
href="https://redirect.github.com/pygments/pygments/issues/2987">#2987</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/3012">#3012</a>)</p>
</li>
<li>
<p>Various improvements to <code>autopygmentize</code> (<a
href="https://redirect.github.com/pygments/pygments/issues/2894">#2894</a>)</p>
</li>
<li>
<p>Update <code>onedark</code> style to support more token types (<a
href="https://redirect.github.com/pygments/pygments/issues/2977">#2977</a>)</p>
</li>
<li>
<p>Update <code>rtt</code> style to support more token types (<a
href="https://redirect.github.com/pygments/pygments/issues/2895">#2895</a>)</p>
</li>
<li>
<p>Cache entry points to improve performance (<a
href="https://redirect.github.com/pygments/pygments/issues/2979">#2979</a>)</p>
</li>
<li>
<p>Fix <code>xterm-256</code> color table (<a
href="https://redirect.github.com/pygments/pygments/issues/3043">#3043</a>)</p>
</li>
<li>
<p>Fix <code>kwargs</code> dictionary getting mutated on each call (<a
href="https://redirect.github.com/pygments/pygments/issues/3044">#3044</a>)</p>
</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/pygments/pygments/blob/master/CHANGES">pygments's
changelog</a>.</em></p>
<blockquote>
<h2>Version 2.20.0</h2>
<p>(released March 29th, 2026)</p>
<ul>
<li>
<p>New lexers:</p>
<ul>
<li>Rell (<a
href="https://redirect.github.com/pygments/pygments/issues/2914">#2914</a>)</li>
</ul>
</li>
<li>
<p>Updated lexers:</p>
<ul>
<li>archetype: Fix catastrophic backtracking in GUID and ID patterns (<a
href="https://redirect.github.com/pygments/pygments/issues/3064">#3064</a>)</li>
<li>ASN.1: Recognize minus sign and fix range operator (<a
href="https://redirect.github.com/pygments/pygments/issues/3014">#3014</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/3060">#3060</a>)</li>
<li>C++: Add C++26 keywords (<a
href="https://redirect.github.com/pygments/pygments/issues/2955">#2955</a>),
add integer literal suffixes (<a
href="https://redirect.github.com/pygments/pygments/issues/2966">#2966</a>)</li>
<li>ComponentPascal: Fix <code>analyse_text</code> (<a
href="https://redirect.github.com/pygments/pygments/issues/3028">#3028</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/3032">#3032</a>)</li>
<li>Coq renamed to Rocq (<a
href="https://redirect.github.com/pygments/pygments/issues/2883">#2883</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/2908">#2908</a>)</li>
<li>Cython: Various improvements (<a
href="https://redirect.github.com/pygments/pygments/issues/2932">#2932</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/2933">#2933</a>)</li>
<li>Debian control: Improve architecture parsing (<a
href="https://redirect.github.com/pygments/pygments/issues/3052">#3052</a>)</li>
<li>Devicetree: Add support for overlay/fragments (<a
href="https://redirect.github.com/pygments/pygments/issues/3021">#3021</a>),
add bytestring support (<a
href="https://redirect.github.com/pygments/pygments/issues/3022">#3022</a>),
fix catastrophic backtracking (<a
href="https://redirect.github.com/pygments/pygments/issues/3057">#3057</a>)</li>
<li>Fennel: Various improvements (<a
href="https://redirect.github.com/pygments/pygments/issues/2911">#2911</a>)</li>
<li>Haskell: Handle escape sequences in character literals (<a
href="https://redirect.github.com/pygments/pygments/issues/3069">#3069</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/1795">#1795</a>)</li>
<li>Java: Add module keywords (<a
href="https://redirect.github.com/pygments/pygments/issues/2955">#2955</a>)</li>
<li>Lean4: Add operators <code>]'</code>, <code>]?</code>,
<code>]!</code> (<a
href="https://redirect.github.com/pygments/pygments/issues/2946">#2946</a>)</li>
<li>LESS: Support single-line comments (<a
href="https://redirect.github.com/pygments/pygments/issues/3005">#3005</a>)</li>
<li>LilyPond: Update to 2.25.29 (<a
href="https://redirect.github.com/pygments/pygments/issues/2974">#2974</a>)</li>
<li>LLVM: Support C-style comments (<a
href="https://redirect.github.com/pygments/pygments/issues/3023">#3023</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/2978">#2978</a>)</li>
<li>Lua(u): Fix catastrophic backtracking (<a
href="https://redirect.github.com/pygments/pygments/issues/3047">#3047</a>)</li>
<li>Macaulay2: Update to 1.25.05 (<a
href="https://redirect.github.com/pygments/pygments/issues/2893">#2893</a>),
1.25.11 (<a
href="https://redirect.github.com/pygments/pygments/issues/2988">#2988</a>)</li>
<li>Mathematica: Various improvements (<a
href="https://redirect.github.com/pygments/pygments/issues/2957">#2957</a>)</li>
<li>meson: Add additional operators (<a
href="https://redirect.github.com/pygments/pygments/issues/2919">#2919</a>)</li>
<li>MySQL: Update keywords (<a
href="https://redirect.github.com/pygments/pygments/issues/2970">#2970</a>)</li>
<li>org-Mode: Support both schedule and deadline (<a
href="https://redirect.github.com/pygments/pygments/issues/2899">#2899</a>)</li>
<li>PHP: Add <code>__PROPERTY__</code> magic constant (<a
href="https://redirect.github.com/pygments/pygments/issues/2924">#2924</a>),
add reserved keywords (<a
href="https://redirect.github.com/pygments/pygments/issues/3002">#3002</a>)</li>
<li>PostgreSQL: Add more keywords (<a
href="https://redirect.github.com/pygments/pygments/issues/2985">#2985</a>)</li>
<li>protobuf: Fix namespace tokenization (<a
href="https://redirect.github.com/pygments/pygments/issues/2929">#2929</a>)</li>
<li>Python: Add <code>t</code>-string support (<a
href="https://redirect.github.com/pygments/pygments/issues/2973">#2973</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/3009">#3009</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/3010">#3010</a>)</li>
<li>Tablegen: Fix infinite loop (<a
href="https://redirect.github.com/pygments/pygments/issues/2972">#2972</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/2940">#2940</a>)</li>
<li>Tera Term macro: Add commands introduced in v5.3 through v5.6 (<a
href="https://redirect.github.com/pygments/pygments/issues/2951">#2951</a>)</li>
<li>TOML: Support TOML 1.1.0 (<a
href="https://redirect.github.com/pygments/pygments/issues/3026">#3026</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/3027">#3027</a>)</li>
<li>Turtle: Allow empty comment lines (<a
href="https://redirect.github.com/pygments/pygments/issues/2980">#2980</a>)</li>
<li>XML: Added <code>.xbrl</code> as file ending (<a
href="https://redirect.github.com/pygments/pygments/issues/2890">#2890</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/2891">#2891</a>)</li>
</ul>
</li>
<li>
<p>Drop Python 3.8, and add Python 3.14 as a supported version (<a
href="https://redirect.github.com/pygments/pygments/issues/2987">#2987</a>,
<a
href="https://redirect.github.com/pygments/pygments/issues/3012">#3012</a>)</p>
</li>
<li>
<p>Various improvements to <code>autopygmentize</code> (<a
href="https://redirect.github.com/pygments/pygments/issues/2894">#2894</a>)</p>
</li>
<li>
<p>Update <code>onedark</code> style to support more token types (<a
href="https://redirect.github.com/pygments/pygments/issues/2977">#2977</a>)</p>
</li>
<li>
<p>Update <code>rtt</code> style to support more token types (<a
href="https://redirect.github.com/pygments/pygments/issues/2895">#2895</a>)</p>
</li>
<li>
<p>Cache entry points to improve performance (<a
href="https://redirect.github.com/pygments/pygments/issues/2979">#2979</a>)</p>
</li>
<li>
<p>Fix <code>xterm-256</code> color table (<a
href="https://redirect.github.com/pygments/pygments/issues/3043">#3043</a>)</p>
</li>
<li>
<p>Fix <code>kwargs</code> dictionary getting mutated on each call (<a
href="https://redirect.github.com/pygments/pygments/issues/3044">#3044</a>)</p>
</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/pygments/pygments/commit/708197d82827ba2d5ca78bcbb653c7102ce86dcd"><code>708197d</code></a>
Fix underline length.</li>
<li><a
href="https://github.com/pygments/pygments/commit/1d4538ae8621d766ecc91ff59caf76ab75983abc"><code>1d4538a</code></a>
Prepare 2.20 release.</li>
<li><a
href="https://github.com/pygments/pygments/commit/2ceaee4e634eebae2d10a47fd05406871f6bac8f"><code>2ceaee4</code></a>
Update CHANGES.</li>
<li><a
href="https://github.com/pygments/pygments/commit/e3a3c54b58c7f80bc4db887e471d4f91c77844ed"><code>e3a3c54</code></a>
Fix Haskell lexer: handle escape sequences in character literals (<a
href="https://redirect.github.com/pygments/pygments/issues/3069">#3069</a>)</li>
<li><a
href="https://github.com/pygments/pygments/commit/d7c3453e342dac319f58e4091f4ef183cc49d802"><code>d7c3453</code></a>
Merge pull request <a
href="https://redirect.github.com/pygments/pygments/issues/3071">#3071</a>
from pygments/harden-html-formatter</li>
<li><a
href="https://github.com/pygments/pygments/commit/0f97e7c37d44abfa4ddfddf44a3290fdad586034"><code>0f97e7c</code></a>
Harden the HTML formatter against CSS.</li>
<li><a
href="https://github.com/pygments/pygments/commit/9f981b2ba42b88ca5bdcebf12cd01efd7cd80aec"><code>9f981b2</code></a>
Update CHANGES.</li>
<li><a
href="https://github.com/pygments/pygments/commit/1d889151024e9a53f3702a60558b29b070306e9e"><code>1d88915</code></a>
Update CHANGES.</li>
<li><a
href="https://github.com/pygments/pygments/commit/c3d93adb9827fc054c3c12b47bde31c781a36a93"><code>c3d93ad</code></a>
Fix ASN.1 lexer: recognize minus sign and fix range operator (<a
href="https://redirect.github.com/pygments/pygments/issues/3060">#3060</a>)</li>
<li><a
href="https://github.com/pygments/pygments/commit/4f06bcf8a5ba3f2b5bda24a26ccf041a1a65d91e"><code>4f06bcf</code></a>
fix bad behaving backtracking regex in CommonLispLexer</li>
<li>Additional commits viewable in <a
href="https://github.com/pygments/pygments/compare/2.19.2...2.20.0">compare
view</a></li>
</ul>
</details>
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dependabot[bot]GitHubdependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 		f7ee145dda chore(deps): bump the minor-and-patch group in /libs/checkpoint with 2 updates (#7292) 
Bumps the minor-and-patch group in /libs/checkpoint with 2 updates:
[langchain-core](https://github.com/langchain-ai/langchain) and
[redis](https://github.com/redis/redis-py).

Updates `langchain-core` from 1.2.20 to 1.2.22
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/langchain-ai/langchain/releases">langchain-core's
releases</a>.</em></p>
<blockquote>
<h2>langchain-core==1.2.22</h2>
<p>Changes since langchain-core==1.2.21</p>
<p>release(core): 1.2.22 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36201">#36201</a>)
fix(core): validate paths in <code>prompt.save</code> and
<code>load_prompt</code>, deprecate methods (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36200">#36200</a>)</p>
<h2>langchain-core==1.2.21</h2>
<p>Changes since langchain-core==1.2.20</p>
<p>release(core): 1.2.21 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36179">#36179</a>)
fix(core,model-profiles): add missing <code>ModelProfile</code> fields,
warn on schema drift (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36129">#36129</a>)
chore(core): remove stale blockbuster allowlist for deleted context
module (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36168">#36168</a>)
ci: suppress pytest streaming output in CI (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36092">#36092</a>)</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/langchain-ai/langchain/commit/d22df94537e4267f72dc1bbfc8e3849baf20d9f7"><code>d22df94</code></a>
release(core): 1.2.22 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36201">#36201</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/27add913474e01e33bededf4096151130ba0d47c"><code>27add91</code></a>
fix(core): validate paths in <code>prompt.save</code> and
<code>load_prompt</code>, deprecate metho...</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/7563fceb40ce31165524f3f57ec65e487c02b1a7"><code>7563fce</code></a>
chore(model-profiles): refresh model profile data (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36195">#36195</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/3e64c255b84b283b3a65216b19b9838734258c96"><code>3e64c25</code></a>
chore: use repo permissions instead of org membership for maintainer
override...</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/1778b082ecd64a9dedd48674d874ca1bfcbe4c7d"><code>1778b08</code></a>
chore(partners): bump <code>langchain-core</code> min to
<code>1.2.21</code> (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36183">#36183</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/ad574fce0d52740c249b0db7bde871d779ffb93d"><code>ad574fc</code></a>
fix(openai): bump min core version (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36180">#36180</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/19f81cf6f1d73f7adf156491ba0617497a526b8c"><code>19f81cf</code></a>
release(core): 1.2.21 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36179">#36179</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/6d07ef28a7023dc7b832fe52862f7a6fc0a187f3"><code>6d07ef2</code></a>
release(openai): 1.1.12 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36178">#36178</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/2f64d80cc65091985873c339ca76a59af7baf739"><code>2f64d80</code></a>
fix(core,model-profiles): add missing <code>ModelProfile</code> fields,
warn on schema d...</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/5ffece5c033365baf4a3df52ffed5c6bfbed27ee"><code>5ffece5</code></a>
chore(core): remove stale blockbuster allowlist for deleted context
module (#...</li>
<li>Additional commits viewable in <a
href="https://github.com/langchain-ai/langchain/compare/langchain-core==1.2.20...langchain-core==1.2.22">compare
view</a></li>
</ul>
</details>
<br />

Updates `redis` from 7.3.0 to 7.4.0
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/redis/redis-py/releases">redis's
releases</a>.</em></p>
<blockquote>
<h2>7.4.0</h2>
<h1>Changes</h1>
<h2>🐛 Bug Fixes</h2>
<ul>
<li>Fix AttributeError in cluster metrics recording when connection is
None or ClusterNode object instance is used to extract the connection
info (<a
href="https://redirect.github.com/redis/redis-py/issues/3999">#3999</a>)</li>
<li>Fixing security concern in <strong>repr</strong> methods for
ConnectionPools - passwords might leak in plain text logs (<a
href="https://redirect.github.com/redis/redis-py/issues/3998">#3998</a>)</li>
<li>Refactored connection count and SCH metric collection (<a
href="https://redirect.github.com/redis/redis-py/issues/4001">#4001</a>)</li>
</ul>
<h2>🧪 Experimental Features</h2>
<p>-Refactored health check logic for MultiDBClient (<a
href="https://redirect.github.com/redis/redis-py/issues/3994">#3994</a>)</p>
<h2>🧰 Maintenance</h2>
<ul>
<li>Expose basic Otel classes and functions to be importable through
redis.observability to match the examples in the readthedocs (<a
href="https://redirect.github.com/redis/redis-py/issues/3996">#3996</a>)</li>
</ul>
<p>We'd like to thank all the contributors who worked on this release!
<a
href="https://github.com/vladvildanov"><code>@​vladvildanov</code></a>
<a
href="https://github.com/petyaslavova"><code>@​petyaslavova</code></a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/redis/redis-py/commit/b72f24ad6a2226d46aed770e18094a86117d2217"><code>b72f24a</code></a>
Updating lib version to 7.4.0</li>
<li><a
href="https://github.com/redis/redis-py/commit/0a4e0afe36504c3fb6df1e38683ea946febac9d3"><code>0a4e0af</code></a>
Refactored health check logic for MultiDBClient (<a
href="https://redirect.github.com/redis/redis-py/issues/3994">#3994</a>)</li>
<li><a
href="https://github.com/redis/redis-py/commit/15492c9156d3ab8dce05360977480510cf24fbf9"><code>15492c9</code></a>
Refactored connection count and SCH metric collection (<a
href="https://redirect.github.com/redis/redis-py/issues/4001">#4001</a>)</li>
<li><a
href="https://github.com/redis/redis-py/commit/cd964ac96649df872a051835e9a52e05a5090607"><code>cd964ac</code></a>
Expose basic Otel classes and funtions to be importable through
redis.observa...</li>
<li><a
href="https://github.com/redis/redis-py/commit/46ab74d02ed9b15176f67edb817de83524f8145a"><code>46ab74d</code></a>
Fixing security concern in <strong>repr</strong> methods for
ConnectionPools - passwords m...</li>
<li><a
href="https://github.com/redis/redis-py/commit/26482dbaae38abdb1966d9b1c803331e2dab2053"><code>26482db</code></a>
Fix AttributeError in cluster metrics recording when connection is None
or Cl...</li>
<li>See full diff in <a
href="https://github.com/redis/redis-py/compare/v7.3.0...v7.4.0">compare
view</a></li>
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 		501ae72b65 chore(deps): bump requests from 2.32.5 to 2.33.0 in /libs/checkpoint (#7285) 
Bumps [requests](https://github.com/psf/requests) from 2.32.5 to 2.33.0.
<details>
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<h2>v2.33.0</h2>
<h2>2.33.0 (2026-03-25)</h2>
<p><strong>Announcements</strong></p>
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<li>📣 Requests is adding inline types. If you have a typed code base
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Give it a try, and report any gaps or feedback you may have in the
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<p><strong>Security</strong></p>
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<li>CVE-2026-25645 <code>requests.utils.extract_zipped_paths</code> now
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<li>Migrated to a PEP 517 build system using setuptools. (<a
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</ul>
<p><strong>Bugfixes</strong></p>
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<li>Fixed an issue where an empty netrc entry could cause malformed
authentication to be applied to Requests on Python 3.11+. (<a
href="https://redirect.github.com/psf/requests/issues/7205">#7205</a>)</li>
</ul>
<p><strong>Deprecations</strong></p>
<ul>
<li>Dropped support for Python 3.9 following its end of support. (<a
href="https://redirect.github.com/psf/requests/issues/7196">#7196</a>)</li>
</ul>
<p><strong>Documentation</strong></p>
<ul>
<li>Various typo fixes and doc improvements.</li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/M0d3v1"><code>@​M0d3v1</code></a> made
their first contribution in <a
href="https://redirect.github.com/psf/requests/pull/6865">psf/requests#6865</a></li>
<li><a href="https://github.com/aminvakil"><code>@​aminvakil</code></a>
made their first contribution in <a
href="https://redirect.github.com/psf/requests/pull/7220">psf/requests#7220</a></li>
<li><a href="https://github.com/E8Price"><code>@​E8Price</code></a> made
their first contribution in <a
href="https://redirect.github.com/psf/requests/pull/6960">psf/requests#6960</a></li>
<li><a href="https://github.com/mitre88"><code>@​mitre88</code></a> made
their first contribution in <a
href="https://redirect.github.com/psf/requests/pull/7244">psf/requests#7244</a></li>
<li><a href="https://github.com/magsen"><code>@​magsen</code></a> made
their first contribution in <a
href="https://redirect.github.com/psf/requests/pull/6553">psf/requests#6553</a></li>
<li><a
href="https://github.com/Rohan5commit"><code>@​Rohan5commit</code></a>
made their first contribution in <a
href="https://redirect.github.com/psf/requests/pull/7227">psf/requests#7227</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/psf/requests/blob/main/HISTORY.md#2330-2026-03-25">https://github.com/psf/requests/blob/main/HISTORY.md#2330-2026-03-25</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/psf/requests/blob/main/HISTORY.md">requests's
changelog</a>.</em></p>
<blockquote>
<h2>2.33.0 (2026-03-25)</h2>
<p><strong>Announcements</strong></p>
<ul>
<li>📣 Requests is adding inline types. If you have a typed code base
that
uses Requests, please take a look at <a
href="https://redirect.github.com/psf/requests/issues/7271">#7271</a>.
Give it a try, and report
any gaps or feedback you may have in the issue. 📣</li>
</ul>
<p><strong>Security</strong></p>
<ul>
<li>CVE-2026-25645 <code>requests.utils.extract_zipped_paths</code> now
extracts
contents to a non-deterministic location to prevent malicious file
replacement. This does not affect default usage of Requests, only
applications calling the utility function directly.</li>
</ul>
<p><strong>Improvements</strong></p>
<ul>
<li>Migrated to a PEP 517 build system using setuptools. (<a
href="https://redirect.github.com/psf/requests/issues/7012">#7012</a>)</li>
</ul>
<p><strong>Bugfixes</strong></p>
<ul>
<li>Fixed an issue where an empty netrc entry could cause
malformed authentication to be applied to Requests on
Python 3.11+. (<a
href="https://redirect.github.com/psf/requests/issues/7205">#7205</a>)</li>
</ul>
<p><strong>Deprecations</strong></p>
<ul>
<li>Dropped support for Python 3.9 following its end of support. (<a
href="https://redirect.github.com/psf/requests/issues/7196">#7196</a>)</li>
</ul>
<p><strong>Documentation</strong></p>
<ul>
<li>Various typo fixes and doc improvements.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/psf/requests/commit/bc04dfd6dad4cb02cd92f5daa81eb562d280a761"><code>bc04dfd</code></a>
v2.33.0</li>
<li><a
href="https://github.com/psf/requests/commit/66d21cb07bd6255b1280291c4fafb71803cdb3b7"><code>66d21cb</code></a>
Merge commit from fork</li>
<li><a
href="https://github.com/psf/requests/commit/8b9bc8fc0f63be84602387913c4b689f19efd028"><code>8b9bc8f</code></a>
Move badges to top of README (<a
href="https://redirect.github.com/psf/requests/issues/7293">#7293</a>)</li>
<li><a
href="https://github.com/psf/requests/commit/e331a288f369973f5de0ec8901c94cae4fa87286"><code>e331a28</code></a>
Remove unused extraction call (<a
href="https://redirect.github.com/psf/requests/issues/7292">#7292</a>)</li>
<li><a
href="https://github.com/psf/requests/commit/753fd08c5eacce0aa0df73fe47e49525c67e0a29"><code>753fd08</code></a>
docs: fix FAQ grammar in httplib2 example</li>
<li><a
href="https://github.com/psf/requests/commit/774a0b837a194ee885d4fdd9ca947900cc3daf71"><code>774a0b8</code></a>
docs(socks): same block as other sections</li>
<li><a
href="https://github.com/psf/requests/commit/9c72a41bec8597f948c9d8caa5dc3f12273b3303"><code>9c72a41</code></a>
Bump github/codeql-action from 4.33.0 to 4.34.1</li>
<li><a
href="https://github.com/psf/requests/commit/ebf71906798ec82f34e07d3168f8b8aecaf8a3be"><code>ebf7190</code></a>
Bump github/codeql-action from 4.32.0 to 4.33.0</li>
<li><a
href="https://github.com/psf/requests/commit/0e4ae38f0c93d4f92a96c774bd52c069d12a4798"><code>0e4ae38</code></a>
docs: exclude Response.is_permanent_redirect from API docs (<a
href="https://redirect.github.com/psf/requests/issues/7244">#7244</a>)</li>
<li><a
href="https://github.com/psf/requests/commit/d568f47278492e630cc990a259047c67991d007a"><code>d568f47</code></a>
docs: clarify Quickstart POST example (<a
href="https://redirect.github.com/psf/requests/issues/6960">#6960</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/psf/requests/compare/v2.32.5...v2.33.0">compare
view</a></li>
</ul>
</details>
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