feat: remove langchain, update uv.lock and fix type_hint

pyproject.toml

@@ -9,7 +9,6 @@ authors = [
 ]
 dependencies = [
     "pydantic>=2.4.2",
-    "langchain>=0.2.16",
     "openai>=1.13.3",
     "opentelemetry-api>=1.22.0",
     "opentelemetry-sdk>=1.22.0",

src/crewai/tools/structured_tool.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import inspect
 import textwrap
-from typing import Any, Callable, Optional, Union
+from typing import Any, Callable, Optional, Union, get_type_hints
 
 from pydantic import BaseModel, Field, create_model
 
@@ -118,7 +118,7 @@ class CrewStructuredTool:
         sig = inspect.signature(func)
 
         # Get type hints
-        type_hints = inspect.get_type_hints(func)
+        type_hints = get_type_hints(func)
 
         # Create field definitions
         fields = {}

uv.lock

@@ -619,7 +619,6 @@ dependencies = [
     { name = "instructor" },
     { name = "json-repair" },
     { name = "jsonref" },
-    { name = "langchain" },
     { name = "litellm" },
     { name = "openai" },
     { name = "opentelemetry-api" },
@@ -641,6 +640,9 @@ agentops = [
 fastembed = [
     { name = "fastembed" },
 ]
+mem0 = [
+    { name = "mem0ai" },
+]
 openpyxl = [
     { name = "openpyxl" },
 ]
@@ -650,9 +652,6 @@ pandas = [
 pdfplumber = [
     { name = "pdfplumber" },
 ]
-mem0 = [
-    { name = "mem0ai" },
-]
 tools = [
     { name = "crewai-tools" },
 ]
@@ -690,7 +689,6 @@ requires-dist = [
     { name = "instructor", specifier = ">=1.3.3" },
     { name = "json-repair", specifier = ">=0.25.2" },
     { name = "jsonref", specifier = ">=1.1.0" },
-    { name = "langchain", specifier = ">=0.2.16" },
     { name = "litellm", specifier = ">=1.44.22" },
     { name = "mem0ai", marker = "extra == 'mem0'", specifier = ">=0.1.29" },
     { name = "openai", specifier = ">=1.13.3" },
@@ -952,7 +950,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/c1/8b/5fe2cc11fee489817272089c4203e679c63b570a5aaeb18d852ae3cbba6a/et_xmlfile-2.0.0-py3-none-any.whl", hash = "sha256:7a91720bc756843502c3b7504c77b8fe44217c85c537d85037f0f536151b2caa", size = 18059 },
 ]
 
-
 [[package]]
 name = "exceptiongroup"
 version = "1.2.2"