My wishlist: a mirror metadata service like Yarn to force pypi to innovate more. Pip is slow because it doesn't store the dependency metadata and has to download all upstream dependencies during the resolution phase. They were too busy wasting time on minor issues like domain squatting than core dependency resolution concerns. I also want to see Python support simultaneously conflicting diamond dependencies like Npm and Cargo. Python doesn't even support shading. One old dependency and your whole build breaks, with no recourse aside from forking upstream.