fix: migrate cookiefactoryv3 assistant to chainlit 2.x / langchain 2.x#164
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m4minidesk-sys wants to merge 4 commits intoaws-samples:mainfrom
Open
fix: migrate cookiefactoryv3 assistant to chainlit 2.x / langchain 2.x#164m4minidesk-sys wants to merge 4 commits intoaws-samples:mainfrom
m4minidesk-sys wants to merge 4 commits intoaws-samples:mainfrom
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- chainlit Action API: value/description → payload/tooltip (bedrock.py) - langchain imports: langchain.* → langchain_classic.* / langchain_text_splitters / langchain_community.vectorstores - requirements.txt: add chainlit>=2.0.0, langchain-classic, langchain-text-splitters Tested: chainlit run app/bedrock.py starts successfully with Python 3.12 + chainlit 2.9.6 + langchain-aws 1.3.1
…uirements.txt These packages are required for the langchain 2.x migration but were missing from requirements.txt. langchain-classic is a PyPI package (v1.0.1) that provides backward-compatible LLMChain, PromptTemplate, etc.
lazify 0.4.0 + chainlit 2.x causes ChainlitContextException when pydantic builds Chain subclasses at module load time. Moving the chainlit.context import inside the point_camera_to_entity() function prevents the eager evaluation and resolves the import-time error. Closes: ChainlitContextException on module import
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Summary
Migrate the CookieFactoryV3 assistant app from deprecated chainlit 1.x and langchain 1.x APIs to current versions.
Changes
chainlit 1.x → 2.x (bedrock.py)
cl.Action(value=..., description=...)→cl.Action(payload=..., tooltip=...)action.value→action.payload.get('value')langchain 1.x → 2.x (8 lib files)
from langchain import PromptTemplate→from langchain_classic import PromptTemplatefrom langchain.chains import *→from langchain_classic.chains import *from langchain.vectorstores import Chroma→from langchain_community.vectorstores import Chromafrom langchain.text_splitter import *→from langchain_text_splitters import *from langchain.schema import BaseMemory→from langchain_classic.schema import BaseMemoryrequirements.txt
chainlit>=2.0.0,langchain-classic,langchain-text-splitters.gitignore
.chainlit/andpackage-lock.jsonto prevent auto-generated files from being trackedTesting
Verified:
chainlit run app/bedrock.pystarts successfullyFiles Changed
11 files, 54 insertions, 54 deletions (under 200 line limit ✅)