langchain[patch]: deprecate various chains #25310
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hwchase17
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| "You may need to pip install -U langchain-community." | ||
| ), | ||
| removal="1.0", | ||
| ) |
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should we do the thing where we just re-import this?
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i also dont think this needs to be a chain at all?
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I considered re-importing but because langchain no longer depends on langchain-community, this would be a breaking change. Can do if preferred.
IMO this should be a community integration, which is why I set up imports there. The natbot repo has had no activity for 2 years and we originally specified this as "deprecate without replacement." So didn't think refactoring it is high priority.
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- [x] NatbotChain: move to community, deprecate langchain version. Update to use `prompt | llm | output_parser` instead of LLMChain. - [x] LLMMathChain: deprecate + add langgraph replacement example to API ref - [x] HypotheticalDocumentEmbedder (retriever): update to use `prompt | llm | output_parser` instead of LLMChain - [x] FlareChain: update to use `prompt | llm | output_parser` instead of LLMChain - [x] ConstitutionalChain: deprecate + add langgraph replacement example to API ref - [x] LLMChainExtractor (document compressor): update to use `prompt | llm | output_parser` instead of LLMChain - [x] LLMChainFilter (document compressor): update to use `prompt | llm | output_parser` instead of LLMChain - [x] RePhraseQueryRetriever (retriever): update to use `prompt | llm | output_parser` instead of LLMChain
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prompt | llm | output_parserinstead of LLMChain.prompt | llm | output_parserinstead of LLMChainprompt | llm | output_parserinstead of LLMChainprompt | llm | output_parserinstead of LLMChainprompt | llm | output_parserinstead of LLMChainprompt | llm | output_parserinstead of LLMChain