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#Python

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Diagram of Will pip install here?: 1. You run pip install, 2. Inside a venv?, 3. Marker file present?, 4. pip.conf override?, 5. Refused.

pip Says externally-managed-environment: What to Do

Why pip install now fails with externally-managed-environment on Ubuntu 24.04, Debian 12 and Homebrew, and the three fixes that work: a venv, pipx, or apt. Plus why it passes in GitHub Actions and fails in docker build.

#Python#Docker#Linux

Neeraj Jha

October 27, 2026