uv sync: Distribution markupsafe==3.0.2 @ registry+https://download.pytorch.org/whl/cpu can't be installed because it doesn't have a source distribution or wheel for the current platform

[jfaust]

Similar to #8922, but with uv sync. With the following pyproject.toml:

[project]
name = "uv-repro"
version = "0.1.0"
description = "Add your description here"
readme = "README.md"
requires-python = ">=3.11"
dependencies = ["jinja2==3.1.4"]

[tool.uv]
index-strategy = 'unsafe-best-match'
find-links = ['https://download.pytorch.org/whl/torch_stable.html']
extra-index-url = [
    'https://download.pytorch.org/whl/cpu',
]

I get:

Resolved 3 packages in 311ms
error: Distribution `markupsafe==3.0.2 @ registry+https://download.pytorch.org/whl/cpu` can't be installed because it doesn't have a source distribution or wheel for the current platform

If I add https://pypi.org/simple to the beginning of the extra-index-url list, the problem goes away.

[zanieb]

To confirm, I can reproduce this

❯ uv lock
Resolved 3 packages in 952ms
Removed anyio v4.6.2.post1
Removed certifi v2024.8.30
Removed example v0.1.0
Removed h11 v0.14.0
Removed httpcore v1.0.7
Removed httpx v0.28.0
Removed idna v3.10
Added jinja2 v3.1.4
Added markupsafe v3.0.2
Removed sniffio v1.3.1
Added uv-repro v0.1.0
❯ uv sync
Resolved 3 packages in 407ms
error: Distribution `markupsafe==3.0.2 @ registry+https://download.pytorch.org/whl/cpu` can't be installed because it doesn't have a source distribution or wheel for the current platform

The lock entry is

[[package]]
name = "markupsafe"
version = "3.0.2"
source = { registry = "https://download.pytorch.org/whl/cpu" }
wheels = [
    { url = "https://download.pytorch.org/whl/MarkupSafe-3.0.2-cp313-cp313-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:15ab75ef81add55874e7ab7055e9c397312385bd9ced94920f2802310c930396" },
]

[zanieb]

@charliermarsh looks like the universal resolver to account for wheels on additional indexes?

[zanieb]

@jfaust I think the recommendation here would be to use the new index APIs and be explicit about where you want your packages to come from.

https://docs.astral.sh/uv/guides/integration/pytorch/
https://docs.astral.sh/uv/configuration/indexes/

[jfaust]

@zanieb Got it, that's much nicer. I'm brand new to uv so was just naively trying to convert a requirements.txt. In the repro it works great, I'll need to check a more involved example.

Should I close this, or would you still expect the original to have worked?

[zanieb]

We should at least have a better error message for the original.

[charliermarsh]

I'm starting to think about this problem.

[joellidin]

Hello, I am also having a similar problem. When following the guide on how to use uv with pytorch, I get the following error when trying to upgrade my dependencies with uv sync -U:

error: Distribution `torch==2.5.1 @ registry+https://download.pytorch.org/whl/cpu` can't be installed because it doesn't have a source distribution or wheel for the current platform

I am pretty sure this worked before so I don't really know what have changed. I have also tried to set a marker specifically for linux but still get the issue.

[tool.uv.sources]
torch = [
  { index = "pytorch-cpu", marker = "platform_system == 'Linux'" },
]
torchvision = [
  { index = "pytorch-cpu", marker = "platform_system == 'Linux'" },
]

[[tool.uv.index]]
name = "pytorch-cpu"
url = "https://download.pytorch.org/whl/cpu"
explicit = true

[haruka0000]

Hello, I also encountered the same issue. I would be grateful if measures could be taken.

For now, I was able to resolve the issue by fixing it to "markupsafe==2.1.3" as shown in the following file, so I will share it.

[project]
name = "test"
version = "0.1.0"
description = "Add your description here"
readme = "README.md"
requires-python = ">=3.12"
dependencies = [
    "numpy>=2.1.2",
    "torch>=2.5.1",
]


[project.optional-dependencies]
rocm = [
    "torch>=2.1.0",
    "torchvision>=0.20.0",
    "markupsafe==2.1.3",
]


[tool.uv.sources]
torch = [
    { index = "torch-rocm", extra = "rocm" },
]

[[tool.uv.index]]
name = "torch-rocm"
url = "https://download.pytorch.org/whl/rocm6.2"

[lbsucceed]

Hello, I also encountered the same issue. I would be grateful if measures could be taken.

For now, I was able to resolve the issue by fixing it to "markupsafe==2.1.3" as shown in the following file, so I will share it.

[project]
name = "test"
version = "0.1.0"
description = "Add your description here"
readme = "README.md"
requires-python = ">=3.12"
dependencies = [
"numpy>=2.1.2",
"torch>=2.5.1",
]

[project.optional-dependencies]
rocm = [
"torch>=2.1.0",
"torchvision>=0.20.0",
"markupsafe==2.1.3",
]

[tool.uv.sources]
torch = [
{ index = "torch-rocm", extra = "rocm" },
]

[[tool.uv.index]]
name = "torch-rocm"
url = "https://download.pytorch.org/whl/rocm6.2"

Yes, when I tried downgrading to markupsafe==2.1.5 and markupsafe==2.1.3, the error disappeared.

(test) root@DESKTOP:~/test# uv add torch==2.5.0 torchvision==0.20.0 torchaudio==2.5.0 --extra-index-url https://download.pytorch.org/whl/cpu
warning: Indexes specified via `--extra-index-url` will not be persisted to the `pyproject.toml` file; use `--index` instead.
Resolved 18 packages in 2.67s
error: Distribution `markupsafe==3.0.2 @ registry+https://download.pytorch.org/whl/cpu` can't be installed because it doesn't have a source distribution or wheel for the current platform

hint: You're using CPython 3.11 (`cp311`), but `markupsafe` (v3.0.2) only has wheels with the following Python implementation tag: `cp313`
(test) root@DESKTOP:~/test# uv add markupsafe==2.1.3
Resolved 2 packages in 119ms
Prepared 1 package in 152ms
Uninstalled 1 package in 0.90ms
Installed 1 package in 25ms
 - markupsafe==2.1.5
 + markupsafe==2.1.3
(test) root@DESKTOP:~/test# uv add torch==2.5.0 torchvision==0.20.0 torchaudio==2.5.0 --extra-index-url https://download.pytorch.org/whl/cpu
warning: Indexes specified via `--extra-index-url` will not be persisted to the `pyproject.toml` file; use `--index` instead.
Resolved 18 packages in 2.58s
Audited 13 packages in 0.01ms

[Chiggy-Playz]

Edit: Seems like I've misunderstood the current issue's topic and posted something about a different issue. But I still think this could be added as a new feature to make adding explicit indexes easier. Sorry 😓

I've noticed something and maybe there could a solution to this problem without downgrading.
All commands run in a new project built by uv init

I've noticed when i run uv add, pyproject.toml contains the following:

[project]
name = "test3"
version = "0.1.0"
description = "Add your description here"
readme = "README.md"
requires-python = ">=3.11"
dependencies = [
    "torch",
    "torchvision",
]

[tool.uv.sources]
torch = { index = "pytorch-cu124" }
torchvision = { index = "pytorch-cu124" }

[[tool.uv.index]]
name = "pytorch-cu124"
url = "https://download.pytorch.org/whl/cu124"

And after which i get the error and hence the content is rolled back and dependencies and indexes are removed.
Now if we compare this to the example pyproject given in toml to install pytorch, the only difference is that the pytorch source is not explicit.

So, what I did was paste the above content into the pyproject manually, add explicit=true to the index, delete uv.lock if it exists, and then run uv sync again. And then it worked perfectly fine!

PS D:\VirtualEnvironments\test3> uv sync
Resolved 28 packages in 3.40s
Installed 12 packages in 2.01s
 + filelock==3.17.0
 + fsspec==2025.2.0
 + jinja2==3.1.5
 + markupsafe==3.0.2
 + mpmath==1.3.0
 + networkx==3.4.2
 + numpy==2.2.2
 + pillow==11.1.0
 + sympy==1.13.1
 + torch==2.6.0+cu124
 + torchvision==0.21.0+cu124
 + typing-extensions==4.12.2

Proposal: Add a --explicit flag or maybe --explicit-index which will set the index as explicit?