Story #6875: [Meta] Integrate with Bandersnatch
Use Bandersnatch to perform package metadata fetching and filtering
We should use Bandersnatch as a library to perform metadata fetching and filtering. Bandersnatch already supports a large number of the features which we want to support, is well tested and used, and is appropriately "polite" about accessing PyPI's APIs.
Some work needs to be done on the Bandersnatch side of things to make this possible, but the developers are very receptive to these changes since it will improve the overall code quality of the project. This issue discusses some of this work: