torch transformers accelerate bitsandbytes langchain sentence-transformers faiss-cpu==1.9.0 faiss-gpu==1.7.2 fast-pytorch-kmeans==0.2.0.1 fastai==2.7.18 openpyxl pacmap datasets langchain-community ragatouille huggingface_hub langchain-huggingface langchain_openai typing pyyaml python-dotenv