python-pooch

URL: https://github.com/fatiando/pooch
Description: pooch manages a data registry by downloading your data files from a server only when needed and storing them locally in a data cache (a folder on your computer).

Here are Pooch's main features:

• Pure Python and minimal dependencies.
• Download a file only if necessary (it's not in the data cache or needs to be updated).
• Verify download integrity through SHA256 hashes (also used to check if a file needs to be updated).
• Designed to be extended: plug in custom download (FTP, scp, etc) and post-processing (unzip, decompress, rename) functions.
• Includes utilities to unzip/decompress the data upon download to save loading time.
• Can handle basic HTTP authentication (for servers that require a login) and printing download progress bars.
• Easily set up an environment variable to overwrite the data cache location.

Needed for updating python-mne to v0.24.0

Seems like another simple enough package without the need to package additional deps