PyTorch nightly index makes uv download all torch versions in a loop #9651
Description
I copied the full PyTorch example from https://docs.astral.sh/uv/guides/integration/pytorch/#using-a-pytorch-index:
[project]
name = "project"
version = "0.1.0"
requires-python = ">=3.12.0"
dependencies = [
"torch>=2.5.1",
"torchvision>=0.20.1",
]
[tool.uv.sources]
torch = [
{ index = "pytorch-cpu", marker = "platform_system != 'Darwin'" },
]
torchvision = [
{ index = "pytorch-cpu", marker = "platform_system != 'Darwin'" },
]
[[tool.uv.index]]
name = "pytorch-cpu"
url = "https://download.pytorch.org/whl/cpu"
explicit = trueOnly difference is I swapped the index url to https://download.pytorch.org/whl/nightly/cpu
When I run uv sync, it downloads all versions of torch in reverse order. It doesn't really stop until I Ctrl + C it. Without nightly, it works fine.
$ uv version
uv 0.5.6 (Homebrew 2024-12-03)