chore(dependencies): Bump langchain and langgraph libs to 1.0.x

Author: stronk7

pyproject.toml

@@ -30,19 +30,19 @@ dependencies = [
     "cachetools ~= 6.2.1",
     "colorlog ~= 6.10.1",
     "fastapi ~= 0.119.0",
-    "langchain ~= 0.3.27",
-    "langchain-community ~= 0.3.31",
-    "langchain-core ~= 0.3.76",
-    "langchain-openai ~= 0.3.35",
-    "langfuse ~= 3.7.0",
-    "langgraph ~= 0.6.10",
+    "langchain ~= 1.0.1",
+    "langchain-community ~= 0.4.0",
+    "langchain-core ~= 1.0.0",
+    "langchain-openai ~= 1.0.0",
+    "langfuse ~= 3.8.0",
+    "langgraph ~= 1.0.1",
     "langsmith ~= 0.4.37",
     "fastmcp ~= 2.12.5",
     "pymilvus ~= 2.6.2",
     "python-dotenv ~= 1.1.1",
     "tiktoken ~= 0.12.0",
     "tqdm ~= 4.67.1",
-    "uvicorn ~= 0.37.0",
+    "uvicorn ~= 0.38.0",
 ]
 
 [project.optional-dependencies]

wiki_rag/search/util.py

@@ -10,7 +10,6 @@
 from typing import Annotated, Literal, TypedDict
 
 from cachetools import TTLCache, cached
-from langchain import hub
 from langchain_core.messages import BaseMessage
 from langchain_core.prompts import (
     ChatPromptTemplate,
@@ -26,6 +25,7 @@
 from langgraph.graph import END, START, StateGraph
 from langgraph.graph.state import CompiledStateGraph
 from langgraph.runtime import Runtime
+from langsmith.client import Client
 from pymilvus import AnnSearchRequest, MilvusClient, WeightedRanker
 
 import wiki_rag.index as index
@@ -129,7 +129,7 @@ def load_prompts_for_rag(prompt_name: str) -> ChatPromptTemplate:
             prefixed_prompt_name = f"{os.getenv("LANGSMITH_PROMPT_PREFIX")}{prompt_name}"
             logger.info(f"Loading the prompt {prefixed_prompt_name} from LangSmith.")
             prompt_provider = "LangSmith"
-            chat_prompt = hub.pull(prefixed_prompt_name)
+            chat_prompt = Client().pull_prompt(prefixed_prompt_name)
         elif os.getenv("LANGFUSE_PROMPTS", "false") == "true":
             langfuse = Langfuse()
             prefixed_prompt_name = f"{os.getenv("LANGFUSE_PROMPT_PREFIX")}{prompt_name}"