Update app.py

app.py

@@ -2,7 +2,8 @@ import argparse
 import json
 import os
 os.system("pip install torch==2.6.0 torchvision==0.21.0 --index-url https://download.pytorch.org/whl/cu124")
-os.system("pip install flash-attn==2.5.2")
+import subprocess
+subprocess.run('pip install flash-attn --no-build-isolation', env={'FLASH_ATTENTION_SKIP_CUDA_BUILD': "TRUE"}, shell=True)
 import sys
 import threading