Feature Request: Auto-Resume Downloads in pip

[shaun-barnard]

What's the problem this feature will solve?

I am trying to install large packages using pip, but when the download fails, I am unable to resume it. Instead, I have to restart the download, which can be time-consuming and frustrating.
The current lack of an auto-resume feature in pip means that when a download fails—due to network issues, server timeouts, or other interruptions—users must restart the entire download from the beginning. This can be particularly frustrating when dealing with large packages. Users often waste time and bandwidth, leading to a poor experience, especially in environments with unstable internet connections.

Describe the solution you'd like

I would like pip to include an auto-resume feature for downloads. This feature would allow pip to automatically resume interrupted downloads from where they left off, rather than starting over.

• Complex Projects: In projects that rely on multiple large packages, such as data science or deep learning projects, a single failed download can halt the entire setup process. An auto-resume feature would allow developers to continue their work without needing to restart lengthy installations.
• Remote Environments: Users working in cloud environments or remote servers may experience network interruptions. An auto-resume feature would enhance the reliability of installations in these scenarios, making pip more robust for professional use.

Alternative Solutions

I have attempted to work around the problem by using external tools like wget or curl to download large packages manually, as these tools support resuming downloads. However, this approach adds complexity to the installation process, as I then have to manually install the downloaded packages using pip. This is not ideal, as it defeats the purpose of having a streamlined package manager like pip.
Additionally, I have explored using local mirrors or caching solutions, but these methods can be cumbersome to set up and maintain, especially for users who frequently change environments or work on different projects.

Additional context

• The lack of an auto-resume feature is a common pain point among users dealing with large downloads in pip.
• Many users have expressed similar frustrations in forums and discussions related to pip and package management.
• Implementing this feature could significantly improve user experience.

Code of Conduct

• I agree to follow the PSF Code of Conduct.

[notatallshaw]

Hi, thanks for reporting. This feature has been discussed in #4796.

In summary, the current stance is that in principle this feature would be accepted should a suitable PR be submitted to pip.