## Summary
- replace Python lint type-checking from mypy to ty across LangGraph
packages
- remove mypy config/cache wiring and mypy-only references
- regenerate uv locks with ty 0.0.43
## Verification
- git diff --check
- make lint_package && make lint_tests in libs/langgraph
- make lint_package && make lint_tests in libs/checkpoint
- make lint_package && make lint_tests in libs/checkpoint-sqlite
- make lint_package && make lint_tests in libs/checkpoint-postgres
- make lint_package && make lint_tests in libs/prebuilt
- make lint_package && make lint_tests in libs/cli
- make lint in libs/sdk-py
- make lint in libs/checkpoint-conformance
---------
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: open-swe[bot] <215916821+open-swe[bot]@users.noreply.github.com>
## Problem
Dependabot opens dev-dependency PRs with titles like `chore(deps-dev):
bump mypy ...`. The `lint-pr-title` check
(amannn/action-semantic-pull-request) rejects them because **`deps-dev`
is not in the allowed scopes**:
```
Unknown scope "deps-dev" found in pull request title ...
Scope must match one of: checkpoint, checkpoint-postgres, checkpoint-sqlite, cli, langgraph, prebuilt, scheduler-kafka, sdk-py, docs, ci, deps.
```
This is the **only** failing check on several open Dependabot PRs
(#7977, #7966, #7967, #7968) and adds noise to others (#7969, #7970,
#7974).
## Change
Add `deps-dev` to the allowed `scopes:` list in
`.github/workflows/pr_lint.yml` (one line). No other changes; workflow
permissions remain `pull-requests: read`.
## Effect
Existing and future `chore(deps-dev):` Dependabot PRs pass title
validation. PRs blocked *only* by this become mergeable once their
(passing) checks re-run.
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
## 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>
## Summary
- Changes all 11 dependabot entries from `weekly` to `monthly` schedule
to reduce PR noise
- Removes `day: monday` (only valid for weekly cadence)
- Adds `update-types` split to every entry so breaking major upgrades
arrive in a separate PR from safe minor/patch updates
**Before:** one wildcard group, weekly, major and minor/patch mixed
together
**After:** two groups (`minor-and-patch` / `major`), monthly
## Test plan
- [x] Confirm dependabot picks up the new config (check Insights →
Dependency graph → Dependabot)
- [ ] Verify next scheduled run produces two grouped PRs per ecosystem
(minor+patch bundle, major bundle) rather than one-per-dep
🤖 Generated with [Claude Code](https://claude.com/claude-code)
## Summary
- Bumps `langgraph` from stale pinned versions (`1.0.8` / `1.0.0a2`) to
`1.1.2` in three CLI example fixture directories
- Supersedes dependabot PR #7090 which only got as far as `1.0.10rc1`
## Affected files
- `libs/cli/examples/graph_prerelease_reqs/pyproject.toml`: `1.0.8` →
`1.1.2`
-
`libs/cli/examples/graph_prerelease_reqs/deps/additional_deps/pyproject.toml`:
`1.0.8` → `1.1.2`
- `libs/cli/examples/graph_prerelease_reqs_fail/pyproject.toml`:
`1.0.0a2` → `1.1.2`
Closes#7090🤖 Generated with [Claude Code](https://claude.com/claude-code)
---------
Co-authored-by: Claude <noreply@anthropic.com>
- Add schedule.day: monday to all entries
- Add groups configuration to prevent noisy per-dependency PRs
- Split pip directories into individual entries per Dependabot v2 spec
- Add npm ecosystem entries for js-examples and js-monorepo-example
subdirectories
- Specify package-manager: uv for all Python entries (repo uses uv.lock)
Thank you for contributing to LangGraph! Follow these steps to mark your
pull request as ready for review. **If any of these steps are not
completed, your PR will not be considered for review.**
- [x] **PR title**: Follows the format: {TYPE}({SCOPE}): {DESCRIPTION}
- Examples:
- feat(core): add multi-tenant support
- fix(cli): resolve flag parsing error
- docs(openai): update API usage examples
- Allowed `{TYPE}` values:
- feat, fix, docs, style, refactor, perf, test, build, ci, chore,
revert, release
- Allowed `{SCOPE}` values (optional):
- langgraph, docs, cli, checkpoint, checkpoint-postgres,
checkpoint-sqlite, prebuilt, scheduler-kafka, sdk-py
- Once you've written the title, please delete this checklist item; do
not include it in the PR.
- [x] **PR message**: ***Delete this entire checklist*** and replace
with
- **Description:** a description of the change. Include a [closing
keyword](https://docs.github.com/en/issues/tracking-your-work-with-issues/using-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword)
if applicable.
- **Issue:** the issue # it fixes, if applicable
- **Dependencies:** any dependencies required for this change
- **Twitter handle:** if your PR gets announced, and you'd like a
mention, we'll gladly shout you out!
- [x] **Add tests and docs**: If you're adding a new integration, you
must include:
1. A test for the integration, preferably unit tests that do not rely on
network access,
2. An example notebook showing its use. It lives in
`docs/docs/integrations` directory.
- [x] **Lint and test**: Run `make format`, `make lint` and `make test`
from the root of the package(s) you've modified. We will not consider a
PR unless these three are passing in CI. See [contribution
guidelines](https://docs.langchain.com/oss/python/contributing/overview)
for more.
Additional guidelines:
- Make sure optional dependencies are imported within a function.
- Please do not add dependencies to `pyproject.toml` files (even
optional ones) unless they are **required** for unit tests.
- Most PRs should not touch more than one package.
- Changes should be backwards compatible.
