Move detectron2 to runtime install (CUDA build dep)

app.py

@@ -27,6 +27,13 @@ except (ImportError, Exception):
         "diso @ git+https://github.com/SarahWeiii/diso.git@9792ad928ccb09bdec938779651ee03e395758a6"
     )
 
+try:
+    import detectron2  # noqa: F401
+except (ImportError, Exception):
+    _runtime_install(
+        "detectron2 @ git+https://github.com/facebookresearch/detectron2.git@8a9d885b3d4dcf1bef015f0593b872ed8d32b4ab"
+    )
+
 import cv2
 import gradio as gr
 import spaces

requirements.txt

@@ -11,7 +11,8 @@ skel @ git+https://github.com/MarilynKeller/SKEL.git@c32cf16581295bff19399379efe
 # nvdiffrast and diso require CUDA (nvcc) at compile time; installed at runtime in app.py
 # nvdiffrast @ git+https://github.com/NVlabs/nvdiffrast.git@253ac4fcea7de5f396371124af597e6cc957bfae
 # diso @ git+https://github.com/SarahWeiii/diso.git@9792ad928ccb09bdec938779651ee03e395758a6
-detectron2 @ git+https://github.com/facebookresearch/detectron2.git@8a9d885b3d4dcf1bef015f0593b872ed8d32b4ab
+# detectron2 requires CUDA at compile time; installed at runtime in app.py
+# detectron2 @ git+https://github.com/facebookresearch/detectron2.git@8a9d885b3d4dcf1bef015f0593b872ed8d32b4ab
 
 # Core ML
 accelerate