Installing shapelets yields infinite build/lib directories

After shapelets is installed, it creates a series of recursive build/lib directories. This is a well-known problem from setuptools as mentioned here: https://github.com/pypa/setuptools/issues/4076

Example (after trying to uninstall shapelets)

![Image](https://github.com/user-attachments/assets/fc247a04-769f-42cb-8d47-4fa0959b63dc)

 