Update app.py

app.py

@@ -1,4 +1,8 @@
 # Copyright 2024-2025 The Alibaba Wan Team Authors. All rights reserved.
+# PyTorch 2.8 (temporary hack)
+import os
+os.system('pip install --upgrade --pre --extra-index-url https://download.pytorch.org/whl/nightly/cu126 "torch<2.9" spaces')
+import spaces
 import argparse
 import logging
 import os
@@ -7,7 +11,7 @@ import sys
 import json
 import warnings
 from datetime import datetime
-import spaces
+
 import gradio as gr
 warnings.filterwarnings('ignore')