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Bumps [langgraph-checkpoint](https://github.com/langchain-ai/langgraph) from 3.0.0 to 4.0.0. <details> <summary>Release notes</summary> <p><em>Sourced from <a href="https://github.com/langchain-ai/langgraph/releases">langgraph-checkpoint's releases</a>.</em></p> <blockquote> <h2>langgraph-checkpoint==4.0.0</h2> <p>Changes since checkpoint==3.0.1</p> <ul> <li>fix: flip default on base cache (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6677">#6677</a>)</li> <li>fix(checkpoint): InMemorySaver context managers should return self in… (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6529">#6529</a>)</li> <li>fix: docstring for serializer protocol (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6525">#6525</a>)</li> <li>chore: clean up some refs (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6487">#6487</a>)</li> <li>chore: add <code>pyproject.toml</code> links (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6364">#6364</a>)</li> </ul> <h2>langgraph-checkpoint-postgres==3.0.4</h2> <p>Changes since checkpointpostgres==3.0.3</p> <ul> <li>chore: Omit lock when using connection pool (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6734">#6734</a>)</li> <li>chore(deps): upgrade dependencies with <code>uv lock --upgrade</code> (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6671">#6671</a>)</li> <li>chore: update twitter URLs (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6683">#6683</a>)</li> </ul> <h2>langgraph-checkpoint-postgres==3.0.3</h2> <p>Changes since checkpointpostgres==3.0.2</p> <ul> <li>fix: flip default on base cache (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6677">#6677</a>)</li> <li>docs: storage nits (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6651">#6651</a>)</li> </ul> <h2>langgraph-checkpoint-sqlite==3.0.3</h2> <p>Changes since checkpointsqlite==3.0.2</p> <ul> <li>fix: aiosqlite's breaking change (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6699">#6699</a>)</li> <li>chore(deps): upgrade dependencies with <code>uv lock --upgrade</code> (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6671">#6671</a>)</li> <li>chore: update twitter URLs (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6683">#6683</a>)</li> </ul> <h2>langgraph-checkpoint-postgres==3.0.2</h2> <p>Changes since checkpointpostgres==3.0.1</p> <ul> <li>release(checkpoint-postgres): 3.0.1 (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6568">#6568</a>)</li> <li>chore: pgqs (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6567">#6567</a>)</li> <li>fix(checkpoint-postgres): ensure vector extension is created only if not exists (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6154">#6154</a>)</li> <li>fix(checkpoint-postgres): Replace f-string SQL formatting with parameterized queries in migration statements (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6328">#6328</a>)</li> <li>chore: add <code>pyproject.toml</code> links (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6364">#6364</a>)</li> <li>docs: add license files for checkpoint-sqlite and checkpoint-postgres (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6392">#6392</a>)</li> </ul> <h2>langgraph-checkpoint-sqlite==3.0.2</h2> <p>Changes since checkpointsqlite==3.0.1</p> <ul> <li>fix: flip default on base cache (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6677">#6677</a>)</li> <li>docs: storage nits (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6651">#6651</a>)</li> </ul> <h2>checkpoint==3.0.1</h2> <p>Changes since checkpoint==3.0.0</p> <ul> <li>chore: update ormsgpack minbound and add OPT_REPLACE_SURROGATES (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6395">#6395</a>)</li> <li>fix(checkpoint): update checkpoint interface specification in README (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6386">#6386</a>)</li> </ul> <!-- raw HTML omitted --> </blockquote> <p>... (truncated)</p> </details> <details> <summary>Commits</summary> <ul> <li><a href="f91d79d0c8"><code>f91d79d</code></a> fix: flip default on base cache (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6677">#6677</a>)</li> <li><a href="cb2faa7dda"><code>cb2faa7</code></a> fix(prebuilt): support generic type arguments for ToolRuntime injection (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6509">#6509</a>)</li> <li><a href="a5827c5c61"><code>a5827c5</code></a> fix: change default recursion limit (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6676">#6676</a>)</li> <li><a href="5212369bd0"><code>5212369</code></a> feat(sdk-py): add end-time to crons client (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6674">#6674</a>)</li> <li><a href="7045a23148"><code>7045a23</code></a> fix: add <code>state</code> attribute to <code>ToolCallRequest</code> overrides (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6668">#6668</a>)</li> <li><a href="728db10b1f"><code>728db10</code></a> fix: suppress unintended deprecation warning (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6669">#6669</a>)</li> <li><a href="454af21896"><code>454af21</code></a> feat(sdk-py): cron.on_run_completed support (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6662">#6662</a>)</li> <li><a href="b4630d8452"><code>b4630d8</code></a> chore: delete docs (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6488">#6488</a>)</li> <li><a href="311465bbf7"><code>311465b</code></a> fix: sanitize namespace for deeply nested graph jumps (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6665">#6665</a>)</li> <li><a href="8ccead9560"><code>8ccead9</code></a> docs: x-refs and explainer in tool node docs (<a href="https://redirect.github.com/langchain-ai/langgraph/issues/6653">#6653</a>)</li> <li>Additional commits viewable in <a href="https://github.com/langchain-ai/langgraph/compare/checkpoint==3.0.0...checkpoint==4.0.0">compare view</a></li> </ul> </details> <br /> [](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. 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Packages
Important
This repository is structured as a monorepo, with various packages located in this libs/ directory. Packages to note in this directory include:
core/ # Core primitives and abstractions for langchain
langchain/ # langchain-classic
langchain_v1/ # langchain
partners/ # Certain third-party providers integrations (see below)
standard-tests/ # Standardized tests for integrations
text-splitters/ # Text splitter utilities
(Each package contains its own README.md file with specific details about that package.)
Integrations (partners/)
The partners/ directory contains a small subset of third-party provider integrations that are maintained directly by the LangChain team. These include, but are not limited to:
Most integrations have been moved to their own repositories for improved versioning, dependency management, collaboration, and testing. This includes packages from popular providers such as Google and AWS. Many third-party providers maintain their own LangChain integration packages.
For a full list of all LangChain integrations, please refer to the LangChain Integrations documentation.