# --- Core LangChain and LangGraph ---
# Pin versions for stability. Check PyPI for the latest compatible versions.
# The LangGraph error strongly suggests an older version is being used.
# Ensure langgraph is recent enough to have CompiledGraph in langgraph.graph
langchain
langchain-core  # LangGraph often has tight deps on langchain-core
langgraph      # CRITICAL: This should fix 'CompiledGraph' import error
typing_extensions # Crucial for LangGraph state
langgraph==0.0.28
# --- LLM Providers & Related ---
langchain-google-genai
google-genai

# langchain-openai # If you plan to use OpenAI models
# openai          # If using langchain-openai
# tiktoken                # If using langchain-openai

# --- Community & Experimental ---
langchain-community
langchain-experimental # For PythonREPLTool

# --- UI ---
gradio # Pick a recent stable version that supports your UI features

# --- Data Handling & HTTP ---
pandas
requests
openpyxl # For Pandas to read/write Excel files (if needed by a tool or data loading)

# --- Tools & File Processing ---
huggingface_hub
PyPDF2
Pillow
pytesseract
openai-whisper # For audio transcription
tavily-python
duckduckgo-search

# --- Multimedia Processing (for Whisper & potentially other tools) ---
# These are often needed for Whisper to process various audio formats
ffmpeg-python
soundfile
torch # Whisper dependency
torchaudio # Whisper dependency
transformers[torch] # Might be pulled in by Whisper or other HF models

# --- Other utilities ---
python-dotenv # For .env file handling locally, not strictly for HF Spaces secrets
# pydantic # Usually a dependency of LangChain/LangGraph, explicit if needed for own models
# beautifulsoup4 # If doing web scraping
# lxml # If doing XML/HTML parsing
# smolagents # If you are using this specific library
# wikipedia # For the wikipedia tool if used directly

# --- Optional: Vector Stores (Example: Supabase) ---
# supabase>=1.0,<2.0
# psycopg2-binary # If using Supabase with Postgres

# NOTES:
# 1. LangGraph `CompiledGraph` Import Error: The key fix is upgrading `langgraph` and its dependencies like `langchain-core`.
# 2. Tesseract OCR Engine: For `pytesseract` to work, the Tesseract OCR engine must be installed in the OS of the Hugging Face Space.
#    This often requires adding `apt-get install -y tesseract-ocr` (and possibly language packs like `tesseract-ocr-eng`)
#    to a `packages.txt` file in your Hugging Face Space if it's not pre-installed.
# 3. FFMPEG: For `openai-whisper` to handle various audio formats, `ffmpeg` needs to be available in the Space's OS.
#    Add `ffmpeg` to your `packages.txt` file (e.g., `apt-get install -y ffmpeg`).