chore(deps): update dependency google-cloud-aiplatform to v2 - #439
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twishabansal wants to merge 3 commits into
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…tform v2 aiplatform v2's langchain extra moves langchain from 0.3 to 1.x, which relocates the legacy agent and chain APIs into the separate langchain-classic distribution that the extra now installs. Repoint the two Vertex sample templates at their new locations. Bump samples/langchain_on_vertexai/requirements.txt in lockstep. That file is passed to ReasoningEngine.create() and is what the deployed agent installs, so leaving it on v1 would resolve langchain 0.3 and fail to find langchain_classic at import time. Pin langchain-classic explicitly rather than relying on the extra to supply it. The extra's contents are exactly what shifted here -- v2 also dropped langchain-google-vertexai in favor of langchain-google-genai.
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dishaprakash
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Sep 15, 2026
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LGTM! Please check failing lint |
gemini-2.0-flash-001 is retired, so the reasoning-engine integration test fails at query time with a 404 on the publisher model. Verified gemini-2.5-flash resolves in langchain-cloud-sql-testing/us-central1. No token caps in these templates, so 2.5 thinking has no budget to starve.
dishaprakash
approved these changes
Sep 15, 2026
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Description
Supersedes #438 (cross-repo, so it couldn't be used as a base or pushed to). Carries renovate's bump plus the fix it needs.
aiplatform v2's
langchainextra moves langchain0.3→1.x, which relocated the legacy agent/chain APIs intolangchain-classic. Two Vertex sample templates still import from the old paths.hub,AgentExecutor,create_react_agent,create_retriever_tooland the twochainsimports atlangchain_classic. Behavior unchanged.samples/langchain_on_vertexai/requirements.txtin lockstep — it's whatReasoningEngine.create()installs, so on v1 the deployed agent wouldn't findlangchain_classic.langchain-classicexplicitly rather than relying on the extra.Issue Reference
Supersedes #438