[Pouyanpi]

Description

The scheduled "Test with Latest Dependencies" job has failed since 2026-08-18 on the test_langchain_provider_drift canary. Newer langchain releases added three partner chat providers to _BUILTIN_PROVIDERS, so the discovered set drifted from the snapshot recorded at langchain 1.3.13 (added=['bedrock_mantle_anthropic', 'bedrock_mantle_openai', 'langsmith'], removed=[]).

These are upstream additions with nothing removed, so this regenerates the langchain-community 0.4 snapshot entry via update_provider_snapshot.py with langchain 1.4.8 installed:

• langchain_version: 1.3.13 -> 1.4.8
• partner_chat_providers: add bedrock_mantle_anthropic, bedrock_mantle_openai, langsmith

The 0.3 series entry and uv.lock are unchanged.

Related Issue(s)

Failing run: https://github.com/NVIDIA-NeMo/Guardrails/actions/runs/42707955810

Verification

• workflow is green https://github.com/NVIDIA-NeMo/Guardrails/actions/runs/42854698810
• LANGCHAIN_PROVIDER_DRIFT_CHECK=1 with langchain 1.4.8: tests/integrations/langchain/llm/test_version_compatibility.py 14 passed.
• Locked environment: make test TEST=tests/integrations/langchain/llm/test_version_compatibility.py 13 passed, 1 skipped (canary is skipped outside the latest-deps job).
• Pre-commit passed on the changed file.

Not covered: the Windows / Python 3.12 job in the failing run also hit a TimeoutError in tests/server/experimental/test_guardrails_startup_cleanup.py::test_application_retains_failed_startup_until_cleanup_finishes[timeout-raise]. It passed on the other Windows jobs and is not addressed here.

Summary by CodeRabbit

• New Features
  • LangChain integration provider coverage now includes Bedrock Mantle Anthropic, Bedrock Mantle OpenAI, and LangSmith. These providers are now represented in the supported provider snapshot.

[coderabbitai]

No actionable comments were generated in the recent review.

Walkthrough

The LangChain provider snapshot updates its version from 1.3.13 to 1.4.8 and adds three entries to the partner chat provider list.

Changes: LangChain provider snapshot

Layer / File(s)	Summary
Update snapshot version and providers tests/integrations/langchain/llm/langchain_provider_snapshot.json	The snapshot changes langchain_version to 1.4.8. The partner_chat_providers list adds bedrock_mantle_anthropic, bedrock_mantle_openai, and langsmith.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Change: Other

Suggested reviewers: tanushriya910

Merge Risk: Minimal · up to 573d1

No merge-blocking risk is identified in the snapshot update.

Architecture risk: Low · up to 573d1

The change affects 1 system.

Changed systems: tests

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — tests (service) was modified; 1 changed file maps to changed impact.

Before / after behavior

• observed — Modified behavior in tests/integrations/langchain/llm/langchain_provider_snapshot.json: The 0.4 snapshot’s langchain_version changes from 1.3.13 to 1.4.8.
• observed — Modified behavior in tests/integrations/langchain/llm/langchain_provider_snapshot.json: The partner_chat_providers list adds bedrock_mantle_anthropic and bedrock_mantle_openai.
• observed — Modified behavior in tests/integrations/langchain/llm/langchain_provider_snapshot.json: The partner_chat_providers list adds langsmith.

Pre-merge checks: 5

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly describes the main change: recording LangSmith and Bedrock Mantle providers in the LangChain drift snapshot.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Test Results For Major Changes		The PR makes a minor change to a provider drift test snapshot. It does not change numerical, convergence, or production performance behavior. The PR description also reports test results for the lates…

Full details: Test Results For Major Changes

Explanation

The PR makes a minor change to a provider drift test snapshot. It does not change numerical, convergence, or production performance behavior. The PR description also reports test results for the latest-dependencies and locked environments.

Finishing Touches

Generate unit tests (beta)

• Commit to this branch
• Create a new PR

• Autofix · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

Recent review info

Run configuration

• Source mode: Auto
• Repository: NVIDIA-NeMo/Guardrails
• Branch: pouyanpi/fix-latest-deps-ci
• File: .coderabbit.yaml
• Commit: 573d1cb
• Layers: Repository YAML
• Review profile: CHILL
• Plan: Enterprise
• Run ID: 7f9f36eb-50fd-49a5-a407-b3467273f0c3

Commits

Reviewing files that changed from the base of the PR and between 537fd77 and 573d1cb.

Files selected for processing: 1

• tests/integrations/langchain/llm/langchain_provider_snapshot.json

Included review availability: This review used your included allowance. Your plan provides up to 12 included reviews per hour; 9 remain after this review.

[Pouyanpi]

@greptile review this PR

[greptile-apps]

Confidence Score: 5/5

[Low impact] This snapshot update appears safe to merge.

Summary

Updates the test snapshot for the 0.4 series of langchain-community.

• The LangChain 0.4 snapshot now lists three added partner chat providers.

_{Reviews (2) · Last reviewed commit: "test(langchain): record langsmith and be..." · Reviewed by Greptile}