fix: bound anthropic<1.0.0 on the bedrock extra of uipath-langchain-client - #130
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The bedrock extra received the anthropic SDK only transitively via langchain-aws[anthropic] (unbounded above); langchain-anthropic 1.7.0 also lifted its own <1.0.0 pin. Fresh resolutions therefore picked anthropic 1.x, which moved to httpx2 and rejects UiPath's httpx clients at Bedrock chat-model construction. Add an explicit anthropic[bedrock]>=0.96.0,<1.0.0 to the bedrock extra (anthropic and all already carry the bound; no other extra pulls anthropic transitively). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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What changed and why
Affected package: langchain only (
uipath-langchain-client1.18.0 → 1.18.1).The
bedrockextra had no directanthropicrequirement — it received the SDK only transitively:bedrock→langchain-aws[anthropic]>=1.4.5,<2.0.0langchain-aws[anthropic](1.7.4) →anthropic[bedrock]>=0.95.0— no upper boundlangchain-anthropic1.7.0 (2026-08-27) lifted its ownanthropic<1.0.0pin to>=0.120.0,<2.0.0So any fresh resolution of
uipath-langchain-client[bedrock]since ~2026-08-27 pickedanthropic==1.2.0. The anthropic 1.x SDK moved tohttpx2and rejects the UiPath HTTP client at construction time inclients/bedrock/chat_models.py:This broke every consumer resolving fresh — e.g. all
uipath-langchain-pythonintegration suites since 2026-08-29 (example run) and any end user runninguv syncon a project using the bedrock extra.Changes
anthropic[bedrock]>=0.96.0,<1.0.0to thebedrockextra so the bound applies regardless of what transitive dependencies allow.uv.lock(resolution unchanged —anthropicstays 0.96.0; only the new requirement metadata is recorded).Audit of remaining extras
Only
bedrockhad the gap.anthropicandallalready carry the bound.vertexaiuses plainlangchain-google-vertexai(no[anthropic]extra), andgoogle/azure/fireworks/litellm/openaihave noanthropicin their closures.langchain-anthropic/langchain-awsthemselves are deliberately NOT bounded —langchain-anthropic1.7.0 still admitsanthropic0.12x, so boundinganthropicalone is sufficient and less restrictive.Verification
Fresh (unlocked) resolution of the local package against PyPI:
[bedrock]→anthropic==0.125.0, withlangchain-aws==1.7.4andlangchain-anthropic==1.7.0at latest[anthropic],[all]→anthropic==0.125.0[vertexai]→ noanthropicin resolutionruff check,ruff format --check,pyright, andpytest testspass (the pre-existing localLLMGW_*env setup errors are identical on main).🤖 Generated with Claude Code