Bug#1108733: RuntimeError: operator torchvision::nms does not exist

[Ralph Martin <ralph@cs.cf.ac.uk>]

Package: python3-torch
Version: 2.6.0+dfsg-7
Severity: important

Dear Maintainer,

   * What led up to the situation?
I installed python3-pytorch and python3-torchvision and jupyterlab (on a machine without an nvidia or ATI GPU)

   * What exactly did you do (or not do) that was effective (or
     ineffective)?
I then did
import torch
torch.hub.list('pytorch/vision',force_reload=True)
   * What was the outcome of this action?
RuntimeError: operator torchvision::nms does not exist 
   * What outcome did you expect instead?
A list of models

-- System Information:
Debian Release: 13.0
  APT prefers testing-security
  APT policy: (500, 'testing-security'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.33+deb13-amd64 (SMP w/16 CPU threads; PREEMPT)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages python3-torch depends on:
ii  libc6                            2.41-9
ii  libgcc-s1                        14.2.0-19
ii  libopenmpi40                     5.0.7-1
ii  libprotobuf32t64                 3.21.12-11
ii  libpthreadpool0                  0.0~git20240616.560c60d-1
ii  libstdc++6                       14.2.0-19
ii  libtensorpipe0                   0.0~git20220513.bb1473a-5+b3
ii  libtorch-test                    2.6.0+dfsg-7
ii  libtorch2.6                      2.6.0+dfsg-7
ii  python3 [python3-supported-max]  3.13.3-1
ii  python3-expecttest               0.3.0-1
ii  python3-filelock                 3.18.0-1
ii  python3-fsspec                   2025.3.2-1
ii  python3-hypothesis               6.130.5-2
ii  python3-jinja2                   3.1.6-1
ii  python3-networkx                 3.2.1-5
ii  python3-numpy                    1:2.2.4+ds-1
ii  python3-packaging                25.0-1
ii  python3-pkg-resources            78.1.1-0.1
ii  python3-psutil                   7.0.0-2
ii  python3-requests                 2.32.3+dfsg-5
ii  python3-sympy                    1.13.3-5
ii  python3-typing-extensions        4.13.2-1
ii  python3-yaml                     6.0.2-1+b2
ii  python3.13                       3.13.3-2

Versions of packages python3-torch recommends:
ii  build-essential  12.12
ii  libtorch-dev     2.6.0+dfsg-7
ii  ninja-build      1.12.1-1
ii  pybind11-dev     2.13.6-2

Versions of packages python3-torch suggests:
ii  python3-pytest  8.3.5-2

-- no debconf information