PDM misdetects platform tag, leading to version selection that breaks resolution

[sanmai-NL]

Describe the bug

DEBUG Searching for a compatible version of torch (>=2.2.2, <3.0.0)
DEBUG Selecting: torch==2.5.1 [preference] (torch-2.5.1-cp312-cp312-manylinux1_x86_64.whl)

This happens on macOS x86_64, the latest torch version that's available for this platform is 2.2.2.

To reproduce

pdm install

Expected Behavior

Selection of compatible torch version (2.2.2).

Environment Information

PDM version:
  2.21.0
Python Interpreter:
  /Users/myuser/app/.venv/bin/python (3.12)
Project Root:
  /Users/myuser/app
Local Packages:

{
 "implementation_name": "cpython",
 "implementation_version": "3.13.0",
 "os_name": "posix",
 "platform_machine": "x86_64",
 "platform_release": "23.6.0",
 "platform_system": "Darwin",
 "platform_version": "Darwin Kernel Version 23.6.0: Mon Jul 29 21:13:00 PDT 2024; root:xnu-10063.141.2~1/RELEASE_X86_64",
 "python_full_version": "3.12.7",
 "platform_python_implementation": "CPython",
 "python_version": "3.12",
 "sys_platform": "darwin"
}

pdm -v output

No response

Additional Context

Full repository at https://gitlab.com/han-aim/research/knowledgeplatform/app/-/tree/ea2d531552edb9f8832d83a564203d92274186b6

Are you willing to submit a PR to fix this bug?

• Yes, I would like to submit a PR.

[sanmai-NL]

Possibly related: 3234

[frostming]

You didn't mention but apparently you are using uv mode. Then it has nothing to do with unearth.

[sanmai-NL]

Yes that is true, I don't think it has to do with unearth (but I suppose the problem is in the lockfile, and I don't know the exact interaction between PDM and uv in generating that).

[sanmai-NL]

Is this related? #2696

[frostming]

I can't reproduce using the main branch, can you confirm?

[sanmai-NL]

@frostming I would like to, do you have instructions on how to run it for my colleague?

[frostming]

@frostming I would like to, do you have instructions on how to run it for my colleague?

Instructions on run what?

[sanmai-NL]

@frostming How to install PDM from the main branch, on macOS.

[sanmai-NL]

She uses PDM from Homebrew.

[frostming]

She uses PDM from Homebrew.

brew install --HEAD pdm

[sanmai-NL]

@frostming The fault persists on her system. I'm still trying to get hold of the log. The new uv resolution overrides functionality did provide a workaround, by the way.

[sanmai-NL]

@frostming
bugreport.log

[frostming]

The issue exists in the lock file, and there is no torch version compatible with MacOS 14 x86_64.

In fact, I forgot to mention in the docs that cross-platform lock targets are unavailable in UV mode. You may need to remove the MacOS x86_64 target, turn off uv mode, and run pdm lock --append --platform macos_14_0_x86_64 to fix the lock file.

[sanmai-NL]

@frostming Thanks. There does exist a compatible torch version: v2.2.2. When the lockfile is deleted and regenerated on the native macOS system, the fault pops up too.

[sanmai-NL]

Context for the interested reader: astral-sh/uv#3347