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Pin LangChain version to less than 1.0 #168

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Merged
Yuge Zhang (ultmaster) merged 1 commit into from
Oct 18, 2025
Merged

Pin LangChain version to less than 1.0 #168

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2 changes: 1 addition & 1 deletion agentlightning/tracer/base.py
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@
from agentlightning.types import ParallelWorkerBase

if TYPE_CHECKING:
from langchain.callbacks.base import BaseCallbackHandler # type: ignore
from langchain_core.callbacks.base import BaseCallbackHandler # type: ignore

logger = logging.getLogger(__name__)

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6 changes: 3 additions & 3 deletions pyproject.toml
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Expand Up @@ -55,10 +55,10 @@ agent = [
"autogen-ext[openai]",
"mcp",
"openai-agents",
"langgraph",
"langchain[openai]",
"langgraph<1.0",
"langchain[openai]<1.0",
"langchain-community",

Copilot AI Oct 18, 2025

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The langchain-community package should also be pinned to <1.0 for consistency with other LangChain packages. LangChain 1.0 includes breaking changes across the ecosystem, and langchain-community is part of this ecosystem.

Suggested change
"langchain-community",
"langchain-community<1.0",

Copilot uses AI. Check for mistakes.
"langchain-text-splitters",
"langchain-text-splitters<1.0",
"sqlparse",
"nltk",
"uv",
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