Requirements contain conflicting indexes for package torch error when using extra markers in both the project and a dependency #9942
Description
I have the following setup in a monorepo:
- projects/lib -> helper library which wraps PyTorch, with two extras torch-v1 and torch-v2
- projects/app -> app which uses the lib and also PyTorch directly, with the same two extras torch-v1 and torch-v2
I tried to set up both projects with the markers, and the app -> lib dependency is also only encoded in the optional dependencies of app. E.g. in app/pyproject.toml:
[project.optional-dependencies]
torch-v1 = [
"torch==1.12.1",
"torchaudio==0.12.1",
"lib[torch-v1]",
]
torch-v2 = [
"torch~=2.3.1",
"torchaudio~=2.3.1",
"lib[torch-v2]",
]
[tool.uv]
conflicts = [
[
{ extra = "torch-v1" },
{ extra = "torch-v2" },
],
]
[[tool.uv.index]]
name = "pytorch-cu113"
url = "https://download.pytorch.org/whl/cu113/"
explicit = true
[[tool.uv.index]]
name = "pytorch-cu121"
url = "https://download.pytorch.org/whl/cu121/"
explicit = true
[tool.uv.sources]
lib = { path = "../lib", editable = true }
torch = [
{ index = "pytorch-cu113", extra = "torch-v1", marker = "platform_system != 'Darwin'"},
{ index = "pytorch-cu121", extra = "torch-v2", marker = "platform_system != 'Darwin'"},
]
torchaudio = [
{ index = "pytorch-cu113", extra = "torch-v1", marker = "platform_system != 'Darwin'"},
{ index = "pytorch-cu121", extra = "torch-v2", marker = "platform_system != 'Darwin'"},
]lib/pyproject.toml looks identical except for the lib dependency.
When I then try to sync app, I get:
$ uv sync --extra torch-v1
error: Requirements contain conflicting indexes for package `torch` in split `platform_system != 'Darwin'`:
- https://download.pytorch.org/whl/cu113/
- https://download.pytorch.org/whl/cu121/I've uploaded a repro here: https://github.com/reuben/uv-pytorch-dep-bug-repro