Quick-Start Colab notebook fails with torchvision error

[bloomgithub]

Hi! Thanks for the great package.

When running the Quick-Start-Tutorial via the "Open in Colab" badge, I get this error at the model loading step:

RuntimeError: operator torchvision::nms does not exist

This seems to be because Colab's runtime has torch 2.9.x pre-installed, which conflicts with helical's requirements.

Workaround: Replace the !pip install helical cell with:

!pip uninstall torch torchvision torchaudio -y -q
!pip install torch==2.7.0 torchvision==0.22.0 torchaudio==2.7.0 -q
!pip install helical -q

Then restart runtime and continue.

Environment:

• Google Colab (December 2025)

[maxiallard]

Hi @bloomgithub , thanks a lot for bringing this up! We'll update the instructions :) (and possibly the torch version)