[Bug] ModuleNotFoundError: No module named 'torchdata.datapipes' on Linux aarch64 (DGL incompatibility)

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Title:

[Bug] ModuleNotFoundError: No module named 'torchdata.datapipes' on Linux aarch64 (DGL incompatibility)

Body:

Dear RFdiffusion / DGL Team,

I am writing to report a persistent issue I'm encountering while trying to set up RFdiffusion on a Linux aarch64 (ARM64) system. I would greatly appreciate any guidance or known solutions.

Problem Description:
When attempting to import RFdiffusion's core modules, I consistently get a ModuleNotFoundError: No module named 'torchdata.datapipes'. This error originates within the dgl library, specifically when it tries to import the datapipes submodule from torchdata.

Environment:

• Operating System: Linux aarch64 (Ubuntu 24.04.1 LTS)
• Python Version: 3.9 (Conda environment)
• PyTorch Version: 2.0.0 (CPU-only build from conda-forge)
• TorchVision Version: 0.15.2
• TorchAudio Version: 2.0.0 (installed via pip)
• CUDA Toolkit: 11.8 (Installed via Conda, but PyTorch build is CPU)
• DGL Version:
  • conda install attempts for versions 0.8.1, 0.9.1, 1.0.0, 1.1.2 (+cu118) resulted in PackagesNotFoundError (Conda could not find/resolve them).
  • pip install dgl (latest, 2.1.0) successfully installs DGL.
• TorchData Version: 0.11.0 (installed via pip)
• RFdiffusion Source: https://github.com/RosettaCommons/RFdiffusion
• ColabDesign Source: https://github.com/sokrypton/ColabDesign

Steps to Reproduce:

1. Switched to a Python 3.9 environment.
   • Created a base environment using conda create -n SE3nv python=3.9.
   • Installed PyTorch ecosystem (pytorch==2.0.0, torchvision==0.15.2, cudatoolkit=11.8) from conda-forge. (This step succeeded.)
   • Installed DGL latest version (2.1.0) via pip install dgl. (This step succeeded.)
   • Installed TorchAudio 2.0.0 via pip install torchaudio==2.0.0. (This step succeeded.)
   • Installed RFdiffusion/env/SE3Transformer and ColabDesign (pip install -e .).
   • Installed remaining pip dependencies (omegaconf, icecream, pyrsistent, matplotlib, ipywidgets, py3Dmol, jupyterlab, etc.).
2. Attempted python -c "from inference.utils import parse_pdb".

Expected Behavior:
RFdiffusion modules should import successfully.

Actual Behavior (Traceback):
(Please copy and paste the full traceback from your most recent ModuleNotFoundError: No module named 'torchdata.datapipes' here. For example:)
Traceback (most recent call last):
File "

Additional Context (What I've Tried):

• Attempted installation in Python 3.10 environment, but failed due to DGL, TorchData, and TorchAudio version conflicts.
• For Python 3.9, conda install attempts for DGL versions (0.8.1, 0.9.1, 1.0.0, 1.1.2 with cu118 label) from dglteam and defaults channels consistently failed with PackagesNotFoundError. This indicates Conda cannot find or resolve these aarch64 builds.
• Manually checked ~/miniconda3/envs/SE3nv/lib/python3.9/site-packages/torchdata/ via ls -l and confirmed that the datapipes directory is physically missing. This strongly suggests a structural mismatch between DGL 2.1.0's requirements and the available TorchData 0.11.0 build for aarch64.

Question:
Are there any known working dgl / torchdata version combinations or specific installation instructions for linux-aarch64 that successfully resolve this torchdata.datapipes issue? Are there any official aarch64 Docker images or specific Dockerfile modifications known to work?

Thank you for your time and assistance.

Start with the python -c "from inference.utils import parse_pdb" reproducer and the import path through DGL. Check the installed Python, PyTorch, DGL, and TorchData versions on Linux aarch64, noting that the issue's traceback is incomplete. Done means documenting a confirmed compatible installation or clearly establishing that the reported combination is unsupported.