Upload app.py with huggingface_hub

app.py

@@ -11,9 +11,10 @@ import gradio as gr
 from nanochat.checkpoint_manager import load_model_from_dir
 from nanochat.engine import Engine
 
-MODEL_REPO = os.getenv("NANOCHAT_MODEL_REPO", "loocorez/nanochat-base-d20-step21400")
-STEP = os.getenv("NANOCHAT_STEP", "021400")
-DEPTH = os.getenv("NANOCHAT_DEPTH", "20")
+# Hardcoded model selection for this Space
+MODEL_REPO = "loocorez/nanochat-base-d20-step21400"
+STEP = "021400"
+DEPTH = "20"
 
 ckpt_dir = f"/tmp/ckpt/d{DEPTH}"
 os.makedirs(ckpt_dir, exist_ok=True)