Why Does 'pip install unroll' Fail with 'python setup.py egg_info' Error Code 1 and How Can I Fix It?

Resolving "pip install unroll": "python setup.py egg_info" Failed with Error Code 1

Upon attempting to install packages with pip, users may encounter the error message "Command "python setup.py egg_info" failed with error code 1," particularly with the "unroll" package. To address this issue, we delve into the nature of the error code and provide a series of troubleshooting steps.

Understanding Error Code 1

The Python documentation classifies error code 1 as "Operation not permitted" and traces its origin to errno.h in the Linux operating system. This implies that the operation you are attempting is not authorized.

Addressing the Error for "pip install unroll"

Specifically, this error may indicate that the setuptools module is not installed. To remedy this, follow the installation instructions provided by PyPI.

If setuptools is already installed, try upgrading it:

pip install --upgrade setuptools

If it is up to date, check for the presence of the ez_setup module. If it is missing:

pip install ez_setup

Subsequently, attempt the installation again:

pip install unroll

If the issue persists, reinstall/upgrade setuptools using:

easy_install -U setuptools

Lastly, try installing unroll once more:

pip install unroll

Additional Troubleshooting

If the issue still exists, it can be attributed to a faulty installation of setuptools. Therefore:

• Uninstall setuptools if it is already present: pip uninstall setuptools
• Re-install setuptools using the simple installer: python -m easy_install setuptools
• Attempt to install unroll erneut: pip install unroll

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