transformers einops accelerate xformers chromadb==0.3.26 duckdb==0.8.0 pdfminer.six==20221105 unstructured==0.6.6 extract-msg==0.41.1 tabulate==0.9.0 pandoc==2.3 pypandoc==1.11 langchain==0.0.177 streamlit sentence_transformers gradio