python install_error ai_generated partial

ERROR: Cannot install package-a==1.0 and package-b==2.0 because these package versions have conflicting dependencies.

ID: python/pip-legacy-resolver-conflict

Also available as: JSON · Markdown · 中文
80%Fix Rate
89%Confidence
0Evidence
2024-02-08First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.7-3.12 active — — —

Root Cause

The new pip resolver detects dependency conflicts that the legacy resolver silently ignored, resulting in broken environments.

generic

中文

新版 pip 解析器检测到旧版解析器会静默忽略的依赖冲突，导致环境损坏。

Workarounds

  1. 85% success 
    pip install 'package-a<2' 'package-b<2'  # after checking compatibility on PyPI
  2. 88% success 
    pip install pip-tools && pip-compile requirements.in && pip-sync requirements.txt

Dead Ends

Common approaches that don't work:

  1. 75% fail

    Bypasses safety checks, resulting in an inconsistent environment with subtly broken imports at runtime.

  2. 90% fail

    Does not resolve the underlying version incompatibility between the two packages.