PEFT How to use HHazard/mixtral with PEFT:
from peft import PeftModel
from transformers import AutoModelForCausalLM
base_model = AutoModelForCausalLM.from_pretrained("mistralai/Mixtral-8x7B-v0.1")
model = PeftModel.from_pretrained(base_model, "HHazard/mixtral") 
