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

app.py

@@ -1,5 +1,5 @@
 import os
-
+os.system('pip install git+https://github.com/facebookresearch/detectron2.git')
 import gradio as gr
 
 

mvp.py

@@ -964,9 +964,7 @@ def detect_objects(text_labels, target_dir, conf_thres, *viz_args):
             try:
                 env = dict(os.environ)
                 env["PYTHONPATH"] = (
-                    DETECTRON2_ROOT
-                    + os.pathsep
-                    + MK_PATH
+                    MK_PATH
                     + (os.pathsep + env["PYTHONPATH"] if env.get("PYTHONPATH") else "")
                 )
                 root_input_dir = os.path.dirname(target_dir)