> Pip is slow because it doesn't store the dependency metadata and has to download all upstream dependencies during the resolution phase. This isn’t really tru

> Pip is slow because it doesn't store the dependency metadata and has to download all upstream dependencies during the resolution phase. This isn’t really true and hasn’t been for a long time. It relies on package authors to include the dependency metadata, but pypi has published it and pip has used it going back to at least 2017, if not earlier. They could do more to enforce it, but there’s a lot more to the story of why pip is slow than this.