Testing the next-gen pip dependency resolver
This is an attempt to summarize the broader software architecture around dependency resolution in pip and how testing is being done around this area. The motivation behind writing this, is to make sure all the developers working on this project are on the same page, and to have a written record about the state of affairs. Architecture The “legacy” resolver in pip, is implemented as part of pip’s codebase and has been a part of it for many years. It’s very tightly coupled with the existing code, isn’t easy to work with and has severe backward compatibility concerns with modifying directly – which is why we’re implementing a separate “new” resolver in this project, instead of trying to improve the existing one. ...