Ensurepip, Pip Not Found On Ubuntu-24.04-LTS

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Introduction

When building OpenSCAD from source on Ubuntu 24.04 LTS, you may encounter an issue where ensurepip and pip are not found. This problem arises during the setup of the testing virtual environment (venv) for image comparison. In this article, we will delve into the root cause of this issue and provide a comprehensive solution to resolve it.

Understanding the Issue

The error message indicates that the python executable in the testing venv cannot find the ensurepip and pip modules. This is a critical issue, as it prevents the successful setup of the testing venv. The error message also mentions a ModuleNotFoundError for the numpy module, which is a dependency required by the image_compare.py script.

The Role of uni-get-dependencies.sh

The uni-get-dependencies.sh script is responsible for installing the necessary dependencies for OpenSCAD. However, it appears that this script is missing a crucial dependency installation, which is causing the ensurepip and pip modules to be unavailable.

Resolving the Issue

To resolve this issue, we need to install the ensurepip and pip modules manually. We can do this by running the following commands:

sudo apt update
sudo apt install -y python3-pip

These commands will install the pip package for Python 3, which includes the ensurepip module.

Alternative Solution: Installing ensurepip and pip Manually

If the above solution does not work, you can try installing ensurepip and pip manually using the following commands:

sudo apt update
sudo apt install -y python3-distutils
sudo python3 -m ensurepip
sudo python3 -m pip install --upgrade pip

These commands will install the distutils package, which is required by ensurepip, and then use ensurepip to install pip. Finally, it will upgrade pip to the latest version.

Conclusion

In conclusion, the issue of ensurepip and pip not being found on Ubuntu 24.04 LTS is caused by a missing dependency installation in the uni-get-dependencies.sh script. By installing the python3-pip package or manually installing ensurepip and pip, we can resolve this issue and successfully set up the testing venv for image comparison.

Troubleshooting Tips

If you encounter any issues during the installation process, here are some troubleshooting tips to help you resolve the problem:

  • Check the package list to ensure that the python3-pip package is installed correctly.
  • Verify that the python3 executable is pointing to the correct Python 3 interpreter.
  • Check the pip version to ensure that it is up-to-date.
  • If you are using a virtual environment, ensure that you are activating the correct environment before running the installation commands.

Additional Resources

For more information on installing dependencies for OpenSCAD, please refer to the official OpenSCAD documentation:

Q: What is the purpose of uni-get-dependencies.sh in OpenSCAD?

A: The uni-get-dependencies.sh script is responsible for installing the necessary dependencies for OpenSCAD. However, it appears that this script is missing a crucial dependency installation, which is causing the ensurepip and pip modules to be unavailable.

Q: Why is ensurepip and pip not found on Ubuntu 24.04 LTS?

A: The issue of ensurepip and pip not being found on Ubuntu 24.04 LTS is caused by a missing dependency installation in the uni-get-dependencies.sh script. This script is responsible for installing the necessary dependencies for OpenSCAD, but it appears to be missing a crucial dependency installation.

Q: How can I resolve the issue of ensurepip and pip not being found?

A: To resolve this issue, you can try one of the following solutions:

  • Install the python3-pip package using the following command: sudo apt install -y python3-pip
  • Manually install ensurepip and pip using the following commands: sudo apt update, sudo apt install -y python3-distutils, sudo python3 -m ensurepip, and sudo python3 -m pip install --upgrade pip

Q: What are the troubleshooting tips for resolving the issue of ensurepip and pip not being found?

A: If you encounter any issues during the installation process, here are some troubleshooting tips to help you resolve the problem:

  • Check the package list to ensure that the python3-pip package is installed correctly.
  • Verify that the python3 executable is pointing to the correct Python 3 interpreter.
  • Check the pip version to ensure that it is up-to-date.
  • If you are using a virtual environment, ensure that you are activating the correct environment before running the installation commands.

Q: Where can I find more information on installing dependencies for OpenSCAD?

A: For more information on installing dependencies for OpenSCAD, please refer to the official OpenSCAD documentation:

Q: What are the system requirements for OpenSCAD?

A: The system requirements for OpenSCAD are:

  • Ubuntu 24.04 LTS or later
  • Python 3.8 or later
  • pip 21.0 or later

Q: Can I use a different Python version with OpenSCAD?

A: Yes, you can use a different Python version with OpenSCAD. However, you will need to ensure that the Python version you choose is compatible with the OpenSCAD version you are using.

Q: How do I report issues with OpenSCAD?

A: If you encounter any issues with OpenSCAD, you can report them on the OpenSCAD issue tracker:

By following the steps outlined in this article and the Q&A section, you should be able to resolve the issue of ensurepip and pip not being found on Ubuntu 24.04 LTS and successfully set up the testing venv for image comparison.