python install_error ai_generated partial

ERROR: ResolutionImpossible: ResolutionTooDeep: backtracking too deep (2000000 iterations)

ID: python/pip-dependency-resolution-too-deep

Also available as: JSON · Markdown · 中文
80%Fix Rate
82%Confidence
0Evidence
2024-10-02First Seen

Version Compatibility

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

Root Cause

pip's resolver hit its backtracking limit while trying to satisfy a large, tightly constrained dependency graph. Usually caused by overly broad or conflicting version pins across many packages.

generic

中文

pip 解析器在尝试满足大型、约束严格的依赖图时达到了回溯上限。通常由许多包之间过于宽泛或冲突的版本固定引起。

Workarounds

  1. 88% success 
    pip install pip-tools
pip-compile --resolver=backtracking requirements.in
pip install -r requirements.txt
  2. 82% success 
    pip install -c constraints.txt core-deps
pip install -c constraints.txt app-deps

Dead Ends

Common approaches that don't work:

  1. 85% fail

    Legacy resolver picks versions greedily and produces an inconsistent environment that breaks at runtime.

  2. 80% fail

    Allowing pre-releases expands the search space and worsens backtracking.