python install_error ai_generated partial

error: subprocess-exited-with-error × python setup.py bdist_wheel did not run successfully. │ exit code: 1 ╰─> [12 lines of output] ModuleNotFoundError: No module named 'Cython'

ID: python/pip-error-subprocess-exited-with-error

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80%Fix Rate
87%Confidence
0Evidence
2024-05-22First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.x active — — —

Root Cause

A PEP 517 build backend subprocess failed because a build-time dependency (e.g., Cython) is declared in pyproject.toml but not installed in the isolated build environment.

generic

中文

PEP 517 构建后端子进程失败，因为 pyproject.toml 中声明的构建时依赖（例如 Cython）未安装在隔离的构建环境中。

Workarounds

  1. 88% success 
    python -m pip install Cython numpy
python -m pip install --no-build-isolation the-package
  2. 85% success 
    python -m pip install --only-binary=:all: --extra-index-url https://download.pytorch.org/whl/cpu the-package

Dead Ends

Common approaches that don't work:

  1. 70% fail

    The isolated build env does not inherit the outer env, so Cython is still missing inside it.

  2. 65% fail

    Without isolation, the build runs in the current env, which still lacks Cython.

  3. 90% fail

    The package source is not yours to edit; pip re-downloads the pristine sdist.