Pin huggingface_hub/tqdm/transformers: unpinned deps broke startup on rebuild

requirements.txt

@@ -1,3 +1,9 @@
+# Pinned 2026-09-04. The Space had no version pins, so every rebuild re-resolved to
+# the latest releases. A rebuild on 2026-09-04 picked up a huggingface_hub / tqdm pair
+# that crashes snapshot_download at startup:
+#   ValueError: min() arg is an empty sequence   (tqdm.contrib.concurrent._min_map_len)
+# Keep these pinned. transformers must stay on 5.x: the Space runs gradio 6.20, which
+# requires huggingface-hub>=1.2, while transformers 4.x requires huggingface-hub<1.0.
 torch
 torchvision
 numpy
@@ -9,10 +15,10 @@ scikit-image
 trimesh
 roma
 pyyaml
-tqdm
-huggingface_hub
-transformers
+tqdm==4.67.3
+huggingface_hub==1.18.0
+transformers==5.16.1
 imageio
 imageio-ffmpeg
 pygltflib
-spaces
+spaces==0.51.3