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Charlie Marsh: uv: An Extremely Fast Python Package Manager

Charlie Marsh of Astral explains how uv, a Rust Python package manager, got so fast. He covers allocators, concurrency, zero-copy tricks and the challenges of Python packaging.

Why HN readers recommended it

Recommended as a fascinating technical account of the optimizations behind uv's speed.

This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.

Video & recommendation details

Creator / channel
Jane Street
Topic
python packaging performance
Format
talk
Level
intermediate
HN recommenders in dataset
3
HN mentions in dataset
4
Recommendation years in dataset
2024–2025

These counts and years describe the included Hacker News records; they are not YouTube views or the video’s publication date.

From the original HN conversations

Excerpts from the recorded comments. Follow each source for the full comment and surrounding discussion.

  • I recently watched a talk by the author of uv that was surprisingly fascinating [1]. He goes into a few of the more notable hacks that they had to come up with to make it as fast as it is. The most interesting thing for …

    kolja005 on Hacker News · 2024-11
    In Using uv with PyTorch
  • There is a talk about it from one of the authors here: [VIDEO] tl;dw Rust, a fast SAT solver, micro-optimisation of key components, caching, and hardlinks/CoW.

    globular-toast on Hacker News · 2025-06
    In uv: An extremely fast Python package and project manager, written in Rust
  • To be fair, the whole post isn't very good IMO, regardless of ChatGPT involvement, and it's weird how some people seem to treat it like some kind of revelation. I mean, of course it wasn't specifically Rust that made it fast, it's really a banal …

    krick on Hacker News · 2025-12
    In How uv got so fast

Summaries, classifications and recommendation records are from the HackerTube source dataset. Read about this library and its limitations.