Test whether can git pull NOVIC code

app.py

@@ -5,10 +5,20 @@
 import os
 import glob
 import random
+import pathlib
+import subprocess
 from typing import Optional
 import PIL.Image
 import gradio as gr
 
+# Ensure access to NOVIC code
+REPO_ROOT = pathlib.Path(__file__).parent.resolve()
+SENTINEL = REPO_ROOT / '.submodules_done'
+if not SENTINEL.exists():
+	print("Initialising git submodules...")
+	subprocess.run(['git', 'submodule', 'update', '--init', '--recursive'], cwd=REPO_ROOT, check=True)
+	SENTINEL.touch()
+
 # Sample images
 IMAGE_EXTS = ('jpg', 'jpeg', 'png', 'webp')
 SAMPLE_IMAGES = sorted(image_path for image_ext in IMAGE_EXTS for image_path in glob.glob(os.path.join('sample_images', f'*.{image_ext}')))