Do not pass --log to pip install
#736
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When passing a `--log` option to `pip install`, _verbose_ logging is appended to the specified file, and the default logging captured by puppet is _quitter_ than the default. When an installation error occur, the quieter output does not contain the reason for the failure, and inspection of the log file is necessary to determine the reason of the error. This is impractical in CI systems where this file cannot be retrieved easily, and makes fixing regressions harder. On production systems, this log is also mostly useless since projects dependencies versions are generally expected to be found in the requirement file used for installation in order for deployments to be reproducible.
kenyon
approved these changes
Sep 28, 2025
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When passing a
--logoption topip install, verbose logging is appended to the specified file, and the default logging captured by puppet is quieter than without the option.When an installation error occur, the quieter output does not contain the reason for the failure, and inspection of the log file is necessary to determine the reason of the error. This is impractical in CI systems where this file cannot be retrieved easily, and makes fixing regressions harder.
On production systems, this log is also mostly useless since projects dependencies versions are generally expected to be found in the requirement file used for installation in order for deployments to be reproducible.