Runtime fallback: install local detectron2 if import fails (no build isolation)

mvp.py

@@ -54,14 +54,14 @@ DETECTRON2_ROOT = os.path.join(REPO_ROOT, "MaskClustering", "third_party", "dete
 os.environ["PYTHONPATH"] = os.environ.get("PYTHONPATH", "") + ":" + os.path.join(REPO_ROOT, "MaskClustering", "third_party")
 
 # Ensure local detectron2 is installed at runtime if postBuild didn't run
-try:
-    import detectron2  # noqa: F401
-except Exception:
-    print("[runtime] detectron2 not found. Installing local detectron2 (editable, no build isolation)...")
-    os.system("python -m pip install --no-build-isolation -e ./MaskClustering/third_party/detectron2")
-    import importlib
-    importlib.invalidate_caches()
-    import detectron2  # noqa: F401
+# try:
+#     import detectron2  # noqa: F401
+# except Exception:
+#     print("[runtime] detectron2 not found. Installing local detectron2 (editable, no build isolation)...")
+#     os.system("python -m pip install --no-build-isolation -e ./MaskClustering/third_party/detectron2")
+#     import importlib
+#     importlib.invalidate_caches()
+#     import detectron2  # noqa: F401
 
 # If detectron2 isn't installed as a package, allow importing from vendored source.
 if os.path.isdir(DETECTRON2_ROOT) and DETECTRON2_ROOT not in sys.path: