python module_error ai_generated true

ERROR: File "setup.py", line 1, in <module> from setuptools import setup ModuleNotFoundError: No module named 'setuptools'

ID: python/pip-legacy-editable-develop-error

Also available as: JSON · Markdown · 中文
80%Fix Rate
87%Confidence
0Evidence
2024-02-14First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.x active — — —

Root Cause

The build environment (often an isolated PEP 517 env or a fresh venv) does not have setuptools installed, and the project's setup.py imports it unconditionally.

generic

中文

构建环境（通常是隔离的 PEP 517 环境或全新的 venv）未安装 setuptools，而项目的 setup.py 无条件导入它。

Workarounds

  1. 95% success 
    Add a build-system table to pyproject.toml: [build-system]\nrequires = ["setuptools>=61", "wheel"]\nbuild-backend = "setuptools.build_meta"
  2. 85% success 
    Install with build isolation disabled: pip install --no-build-isolation .
  3. 90% success 
    Install setuptools in the active venv then run pip install -e . --no-build-isolation

Dead Ends

Common approaches that don't work:

  1. 90% fail

    setup.py must be evaluated before install_requires is processed, so the import fails first.

  2. 85% fail

    pip build isolation creates a fresh env for the build, so the host setuptools is not visible.

  3. 70% fail

    If the project still needs setup.py for dynamic metadata, removing it breaks the build entirely.