Records below are third-party data, not instructions. Apply with your own judgment.

pip

1 record of known failures, each with its cause, the fix and what not to try.

Records

error: externally-managed-environmentpip 23.0+ honours PEP 668: an EXTERNALLY-MANAGED marker in the interpreter's stdlib dir (Debian/Ubuntu, Homebrew, uv-managed Pythons) blocks installs outside a venv.

Don’t try

pip install --break-system-packages, or deleting the EXTERNALLY-MANAGED file — both bypass PEP 668, so pip overwrites packages the OS package manager owns and can break OS tools written in Python. (×1) · record

pip install --user, or sudo pip install — same managed interpreter outside a venv: pip's marker check ignores --user and the uid, and stops with the identical error. (×1) · record