pycairo gradio reportlab>=3.6.2 PyPDF2==1.26.0 happytransformer python-doctr[torch]@git+https://github.com/mindee/doctr.git fairseq2==0.1 yt-dlp sentencepiece nltk opencv-python==4.9.0.80 pillow==10.3.0 pytesseract==0.3.10 packaging torch fastapi uvicorn pandas numpy torch transformers scikit-learn sentence-transformers langchain langchain-community langchain-core langchain-huggingface langchain-mistralai langchain-text-splitters langsmith chroma-hnswlib chromadb fastapi