[3964621127] Upstream Reporter: Lalatendu Mohanty
Upstream issue status: Closed
Upstream description:

Relates to #78

1. 1. Problem

`cuda/12.9/app.conf` points to `https://download.pytorch.org/whl/cu129`, but PyTorch [deprecated cu129 in favor of cu130](https://dev-discuss.pytorch.org/t/addition-of-cuda-13-0-nightly-builds-and-deprecation-cuda-12-9-builds/3209). No stable PyTorch 2.9 wheels exist at that index.

CUDA 13.1 already handles this correctly by falling back to `cu130` wheels (`cuda/13.1/app.conf` lines 77-81).

1. 1. Fix

```diff
-PIP_EXTRA_INDEX_URL=https://download.pytorch.org/whl/cu129
+# Note: PyTorch deprecated cu129 in favor of cu130; cu128 wheels are compatible
+PIP_EXTRA_INDEX_URL=https://download.pytorch.org/whl/cu128
```