Uv is the best thing to happen to the Python ecosystem in a decade • Hacker News Board

Re: Uv is the best thing to happen to the Python ecosystem in a decade

#151

Post by savin-goyal » Wed, Oct 29, 2025, 8:01 PM UTC

dekhn wrote: post #58

I hadn't paid any attention to rust before uv, but since starting to use uv, I've switched a lot of my performance-sensitive code dev to rust (with interfaces to python). These sorts of improvements really do improve my quality of life significantly. My hope is that conda goes away completely. I run an ML cluster and we have multi-gigabyte conda directories and researchers who can't reproduce anything because just to…

the topic of managing large dependency chains for ML/AI workloads in a reproducible has been a deep rabbit hole for us. if you are curious, here is some of the work in open domain

https://docs.metaflow.org/scaling/dependencies https://outerbounds.com/blog/containerize-with-fast-bakery

Re: Uv is the best thing to happen to the Python ecosystem in a decade

#152

Post by dcgudeman » Wed, Oct 29, 2025, 8:02 PM UTC

isodev wrote: post #123

Or is it a corporate grab to gain more influence in the ecosystem? I like the idea, but for profit backing is out of the question. This lesson has been learned countless times.

no, it's a python library, get a grip. Also "This lesson has been learned countless times"? No it hasn't, since when has a package manager developed by a for-profit company hurt the ecosystem?

Re: Uv is the best thing to happen to the Python ecosystem in a decade

#153

Post by devlovstad » Wed, Oct 29, 2025, 8:02 PM UTC

uv has made working with different python versions and environments much, much nicer for me. Most of my colleagues in computational genomics use conda, but I've yet to encounter a scenario where I've been unable to just use uv instead.

Re: Uv is the best thing to happen to the Python ecosystem in a decade

#154

Post by bfkwlfkjf » Wed, Oct 29, 2025, 8:02 PM UTC

The best thing about uv is it's not conda.

Pip is also not conda, but uv is way faster than pip.

Re: Uv is the best thing to happen to the Python ecosystem in a decade

#155

Post by collinmanderson » Wed, Oct 29, 2025, 8:03 PM UTC

an_guy wrote: post #144

All these comments look like advertisement. "uv is better than python!!", "8/10 programmers recommend uv", "I was a terrible programmer before but uv changed my life!!", "uv is fast!!!"

> All these comments look like advertisement. "uv is better than python!!", "8/10 programmers recommend uv", "I was a terrible programmer before but uv changed my life!!", "uv is fast!!!"

Have you tried uv?

Re: Uv is the best thing to happen to the Python ecosystem in a decade

#156

Post by verdverm » Wed, Oct 29, 2025, 8:03 PM UTC

brcmthrowaway wrote: post #45

verdverm wrote: post #11

I'd put type annotations and GIL removal above UV without a second thought. UV is still young and I hit some of those growing pains. While it is very nice, I'm not going to put it up there with sliced bread, it's just another package manager among many

What happend with GIL-removal

You can disable it, here's the PEP, search has more digestible options

https://peps.python.org/pep-0703/

Re: Uv is the best thing to happen to the Python ecosystem in a decade

#157

Post by samgranieri » Wed, Oct 29, 2025, 8:04 PM UTC

I'm not a pythonista, and the most recent time I've been playing with python has been using octodns. origninally I was using a pip setup, and honestly wow UV was so much faster.

I'm very happy the python community has better tooling.

Re: Uv is the best thing to happen to the Python ecosystem in a decade

#158

Post by WesolyKubeczek » Wed, Oct 29, 2025, 8:04 PM UTC

hardwaregeek wrote: post #149

I gotta say, I feel pretty vindicated after hearing for years how Python’s tooling was just fine and you should just use virtualenv with pip and how JS must be worse, that when Python devs finally get a taste of npm/cargo/bundler in their ecosystem, they freaking love it. Because yes, npm has its issues but lock files and consistent installs are amazing

I somehow had quite enough problems going from bundler 1.13 to 1.16 to 2.x some years ago. I’m glad we have killed that codebase with fire.

Re: Uv is the best thing to happen to the Python ecosystem in a decade

#159

Post by hirako2000 » Wed, Oct 29, 2025, 8:04 PM UTC

A problem remain in that many and still more of the popular repositories don't use uv to manage their dependencies.

So you are back having to use conda and the rest. Now, you have yet another package manager to handle.

I wouldn't be harsh to engineers at astral who developed amazing tooling, but the issue with the python ecosystem isn't lack of tooling, it is the proliferation and fragmentation. To solve dependency management fully would be to incorporate other package descriptors, or convert them.

Rsbuild, another rust library, for the node ecosystem did just that. For building and bundling. They came up with rspack, which has large compatibility with the webpack config.

You find a webpack repo? Just add rsbuild, rspack, and you are pretty much ready to go, without the slow (node native) webpack.

Re: Uv is the best thing to happen to the Python ecosystem in a decade

#160

Post by pama » Wed, Oct 29, 2025, 8:05 PM UTC

I love uv. But the post starts with a simple install using a oneliner curl piping to sh, which is such a big attack surface area… I would much rather have a much longer one liner that increases safety.