python config_error ai_generated true

ERROR: File 'pyproject.toml' does not define a 'build-system.requires' table.

ID: python/setuptools-pyproject-missing-build-system

Also available as: JSON · Markdown · 中文
80%Fix Rate
88%Confidence
0Evidence
2024-04-08First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.9 active — — —
3.10 active — — —
3.11 active — — —
3.12 active — — —

Root Cause

A pyproject.toml exists but lacks a [build-system] section, so pip cannot determine the build backend. This often happens when a tool writes a partial pyproject.toml.

generic

中文

存在 pyproject.toml 但缺少 [build-system] 部分，因此 pip 无法确定构建后端。这通常发生在工具写入不完整的 pyproject.toml 时。

Workarounds

  1. 90% success 
    [build-system]
requires = ["setuptools>=61", "wheel"]
build-backend = "setuptools.build_meta"
  2. 75% success 
    pip install build
python -m build --sdist  # validates pyproject.toml

Dead Ends

Common approaches that don't work:

  1. 85% fail

    Disabling isolation doesn't supply the missing build-system table; pip still refuses to proceed.

  2. 60% fail

    Removing the file forces legacy setup.py behavior, which may not exist for a PEP 517-only project.