langchain==0.2.0 langchain-community==0.0.30 langchain-core==0.2.0 tqdm faiss-cpu unstructured[pdf,ppt]==0.13.2 PyMuPDF==1.24.1 PyPDF2==3.0.1 ocrmypdf==14.1.0 # opcional, se quiser OCR fallback pypandoc # necessário para alguns loaders .pptx pillow python-docx chardet lxml oci oci-cli neo4j