Comment by simonw

This post is excellent. I really like reading deep dives like this that take a complex system like uv and highlight the unique design decisions that make it work so well.

I also appreciate how much credit this gives the many previous years of Python standards processes that enabled it.

Update: I blogged more about it here, including Python recreations of the HTTP range header trick it uses and the version comparison via u64 integers: https://simonwillison.net/2025/Dec/26/how-uv-got-so-fast/