Publish optree in pytorch conda channel

[XuehaiPan]

PyTree manipulation is now widely used in PyTorch. It becomes a fairly significant perf bottleneck during torch.fx tracing using the pure-Python approach of PyTree. We are pushing to use C++-based PyTree implementation. The lack of conda package in the Anaconda default channel feels like a serious hindrance for this.

• torch.utils._pytree -> stable pytorch#65761
• [pytree] Use OpTree for PyTree manipulation pytorch#93139 (comment)

I have asked the Anaconda team to add optree in the default channel (ContinuumIO/anaconda-issues#13131). But the average response time on the anaconda issue tracker is roughly weeks. I wonder if it is possible to add optree in the pytorch channel.

Ref: Conda-Forge feedstock: https://github.com/conda-forge/optree-feedstock

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[XuehaiPan]

Any thoughts on this?