Error when built wheel is for the wrong platform #16074

konstin · 2025-09-30T12:44:19Z

Error when a built wheel is for the wrong platform. This can happen especially when using --python-platform or --python-version with uv pip install.

Fixes #16019

konstin · 2025-10-08T08:14:18Z

There are no changes in the ecosystem tests, so this is ready to be reviewed and merged.

crates/uv/tests/it/pip_install.rs

zanieb · 2025-12-03T13:06:10Z

Is it possible that this can cause false positives or regressions?

What if we're just building the wheel for a resolve (i.e., uv pip compile) and don't care if it's not valid?

konstin · 2025-12-03T13:43:07Z

Is it possible that this can cause false positives or regressions?

What if we're just building the wheel for a resolve (i.e., uv pip compile) and don't care if it's not valid?

It's technically possible but for this too happen, we need to have a case where:

There is no static metadata
The build backend doesn't support prepare_metadata_for_build_wheel
The build backend always targets a specific platform
The user is running uv pip compile on a non-target platform. This excludes cases with uv pip compile -p pointing to a target Python that can be emulated on the host.

Of these, (3) is very unlikely, in my experience build backends only have limited cross-compiling support if any, and I've never seen one that defaults to a different platform than the current one. It would also be strange to me if a build backend wouldn't implement prepare_metadata_for_build_wheel, as the functionality is a subset of the build_wheel hook.

--python-platform is a bit fragile by design (PEP 517 has no concept of a target that can be given to build backends, you can only pass them a real Python interpreter as sys.executable), but I'm not aware of other cases where this would cause a regression.

zanieb · 2025-12-03T13:47:46Z

I'm wary because I think uv pip compile --python-platform is far more common than uv pip install --python-platform and I think this error can only cause regressions in the former / is only helpful for the latter.

What do you mean by (3)? Yes I would only expect most build backends to target the current platform and have no conception of cross-builds. Why would "always targets a specific platform" be needed for this to cause a regression?

This was discovered by #16074 I'm not sure what the exact schema of the cache tag is, but since the project is dead, I don't expect any new non-matching versions to follow.

konstin · 2025-12-03T16:43:48Z

That's a very good point, I added a test specifically for this. The good news is it's already passing as the metadata-only branch in DistributionDatabase doesn't pass around tags nor does it check them.

The stronger checks uncovered a bug in how we generate tags for Pyston: #16972. Merging this PR may uncover more such problems on non-PyPI platform that usually don't have built wheels.

This was discovered by #16074, where the wrong tag now fails the Pyston integration test. I'm not sure what the exact schema of the cache tag is, but since the project is dead, I don't expect any new non-matching versions to follow.

Error when a built wheel is for the wrong platform. This can happen especially when using `--python-platform` or `--python-version` with `uv pip install`. Fixes #16019 Ready for review but I want to make some more testing before merging.

zanieb

I'd probably consider this an "enhancement" rather than a "bug"

mjamroz · 2025-12-09T09:47:34Z

guys is there any way to ignore that error? With this upgrade we cannot install kinto-11.2.1-cp3-none-any.whl on alpine anymore

konstin · 2025-12-09T09:50:28Z

@mjamroz Can you please file a new issue with a reproduction? cp3-none-any is a very odd tag, should it by py3-none-any?

mjamroz · 2025-12-10T07:27:08Z

@konstin here you go #17061

This MR contains the following updates: | Package | Update | Change | |---|---|---| | [astral-sh/uv](https://github.com/astral-sh/uv) | patch | `0.9.13` -> `0.9.17` | MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot). **Proposed changes to behavior should be submitted there as MRs.** --- ### Release Notes <details> <summary>astral-sh/uv (astral-sh/uv)</summary> ### [`v0.9.17`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0917) [Compare Source](astral-sh/uv@0.9.16...0.9.17) Released on 2025-12-09. ##### Enhancements - Add `torch-tensorrt` and `torchao` to the PyTorch list ([#17053](astral-sh/uv#17053)) - Add hint for misplaced `--verbose` in `uv tool run` ([#17020](astral-sh/uv#17020)) - Add support for relative durations in `exclude-newer` (a.k.a., dependency cooldowns) ([#16814](astral-sh/uv#16814)) - Add support for relocatable nushell activation script ([#17036](astral-sh/uv#17036)) ##### Bug fixes - Respect dropped (but explicit) indexes in dependency groups ([#17012](astral-sh/uv#17012)) ##### Documentation - Improve `source-exclude` reference docs ([#16832](astral-sh/uv#16832)) - Recommend `UV_NO_DEV` in Docker installs ([#17030](astral-sh/uv#17030)) - Update `UV_VERSION` in docs for GitLab CI/CD ([#17040](astral-sh/uv#17040)) ### [`v0.9.16`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0916) [Compare Source](astral-sh/uv@0.9.15...0.9.16) Released on 2025-12-06. ##### Python - Add CPython 3.14.2 - Add CPython 3.13.11 ##### Enhancements - Add a 5m default timeout to acquiring file locks to fail faster on deadlock ([#16342](astral-sh/uv#16342)) - Add a stub `debug` subcommand to `uv pip` announcing its intentional absence ([#16966](astral-sh/uv#16966)) - Add bounds in `uv add --script` ([#16954](astral-sh/uv#16954)) - Add brew specific message for `uv self update` ([#16838](astral-sh/uv#16838)) - Error when built wheel is for the wrong platform ([#16074](astral-sh/uv#16074)) - Filter wheels from PEP 751 files based on `--no-binary` et al in `uv pip compile` ([#16956](astral-sh/uv#16956)) - Support `--target` and `--prefix` in `uv pip list`, `uv pip freeze`, and `uv pip show` ([#16955](astral-sh/uv#16955)) - Tweak language for build backend validation errors ([#16720](astral-sh/uv#16720)) - Use explicit credentials cache instead of global static ([#16768](astral-sh/uv#16768)) - Enable SIMD in HTML parsing ([#17010](astral-sh/uv#17010)) ##### Preview features - Fix missing preview warning in `uv workspace metadata` ([#16988](astral-sh/uv#16988)) - Add a `uv auth helper --protocol bazel` command ([#16886](astral-sh/uv#16886)) ##### Bug fixes - Fix Pyston wheel compatibility tags ([#16972](astral-sh/uv#16972)) - Allow redundant entries in `tool.uv.build-backend.module-name` but emit warnings ([#16928](astral-sh/uv#16928)) - Fix infinite loop in non-attribute re-treats during HTML parsing ([#17010](astral-sh/uv#17010)) ##### Documentation - Clarify `--project` flag help text to indicate project discovery ([#16965](astral-sh/uv#16965)) - Regenerate the crates.io READMEs on release ([#16992](astral-sh/uv#16992)) - Update Docker integration guide to prefer `COPY` over `ADD` for simple cases ([#16883](astral-sh/uv#16883)) - Update PyTorch documentation to include information about supporting CUDA 13.0.x ([#16957](astral-sh/uv#16957)) - Update the versioning policy ([#16710](astral-sh/uv#16710)) - Upgrade PyTorch documentation to latest versions ([#16970](astral-sh/uv#16970)) ### [`v0.9.15`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0915) [Compare Source](astral-sh/uv@0.9.14...0.9.15) Released on 2025-12-02. ##### Python - Add CPython 3.14.1 - Add CPython 3.13.10 ##### Enhancements - Add ROCm 6.4 to `--torch-backend=auto` ([#16919](astral-sh/uv#16919)) - Add a Windows manifest to uv binaries ([#16894](astral-sh/uv#16894)) - Add LFS toggle to Git sources ([#16143](astral-sh/uv#16143)) - Cache source reads during resolution ([#16888](astral-sh/uv#16888)) - Allow reading requirements from scripts without an extension ([#16923](astral-sh/uv#16923)) - Allow reading requirements from scripts with HTTP(S) paths ([#16891](astral-sh/uv#16891)) ##### Configuration - Add `UV_HIDE_BUILD_OUTPUT` to omit build logs ([#16885](astral-sh/uv#16885)) ##### Bug fixes - Fix `uv-trampoline-builder` builds from crates.io by moving bundled executables ([#16922](astral-sh/uv#16922)) - Respect `NO_COLOR` and always show the command as a header when paging `uv help` output ([#16908](astral-sh/uv#16908)) - Use `0o666` permissions for flock files instead of `0o777` ([#16845](astral-sh/uv#16845)) - Revert "Bump `astral-tl` to v0.7.10 ([#16887](astral-sh/uv#16887))" to narrow down a regression causing hangs in metadata retrieval ([#16938](astral-sh/uv#16938)) ##### Documentation - Link to the uv version in crates.io member READMEs ([#16939](astral-sh/uv#16939)) ### [`v0.9.14`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0914) [Compare Source](astral-sh/uv@0.9.13...0.9.14) Released on 2025-12-01. ##### Performance - Bump `astral-tl` to v0.7.10 to enable SIMD for HTML parsing ([#16887](astral-sh/uv#16887)) ##### Bug fixes - Allow earlier post releases with exclusive ordering ([#16881](astral-sh/uv#16881)) - Prefer updating existing `.zshenv` over creating a new one in `tool update-shell` ([#16866](astral-sh/uv#16866)) - Respect `-e` flags in `uv add` ([#16882](astral-sh/uv#16882)) ##### Enhancements - Attach subcommand to User-Agent string ([#16837](astral-sh/uv#16837)) - Prefer `UV_WORKING_DIR` over `UV_WORKING_DIRECTORY` for consistency ([#16884](astral-sh/uv#16884)) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. 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Closes #17375 It looks like this was missed in #8881 and now that we fail if wheel tags do not match the target environment (see #16074), we do not allow armv8l wheels to installed in environments where the interpreter reports armv7l. Co-authored-by: Claude <noreply@anthropic.com>

konstin added the bug Something isn't working label Sep 30, 2025

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konstin added a commit that referenced this pull request Dec 3, 2025

Fix Pyston tags

d43f922

This was discovered by #16074 I'm not sure what the exact schema of the cache tag is, but since the project is dead, I don't expect any new non-matching versions to follow.

konstin mentioned this pull request Dec 3, 2025

Fix Pyston wheel compatibility tags #16972

Merged

konstin added 3 commits December 4, 2025 10:19

Error when built wheel is for the wrong platform

03007bf

Error when a built wheel is for the wrong platform. This can happen especially when using `--python-platform` or `--python-version` with `uv pip install`. Fixes #16019 Ready for review but I want to make some more testing before merging.

Review and Windows fix

be1c4e4

Add test for uv pip compile --python-platform

dfbb3ae

konstin force-pushed the konsti/check-built-wheel-tags branch from 0bb042e to dfbb3ae Compare December 4, 2025 09:19

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zanieb approved these changes Dec 4, 2025

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konstin added enhancement New feature or improvement to existing functionality and removed bug Something isn't working labels Dec 5, 2025

konstin merged commit b73281d into main Dec 5, 2025
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BrewTestBot mentioned this pull request Dec 6, 2025

uv 0.9.16 Homebrew/homebrew-core#257541

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jkeifer mentioned this pull request Dec 17, 2025

Add lambda request id to pre/post batch logs cirrus-geo/cirrus-geo#361

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This was referenced Jan 9, 2026

uv sync don't support well armv7l / armv8l on aarch64 cpu #17375

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Recognize armv8l as an alias for armv7l in platform tag parsing #17384

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