uv: Python packaging in Rust

3 years ago by Clot to c/python

uv is an extremely fast Python package installer and resolver, designed as a drop-in alternative to pip and pip-tools.

uthredii 11 points 3 years ago

This actually sounds really promising!

They are teaming up with an existing python package manger written in rust.
These are the people who make/made ruff, probably the most useful and fast python linter.
you basically get pip from a single binary.
they plan to have cargo/poetry like functionality in the future.

Edit: here is a blog post from the creator of rye talking about rye and UV: https://lucumr.pocoo.org/...

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exussum 8 points 3 years ago

Is pip the real bottle neck in software development? How many dependencies are you managing that require this speed?

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sugar_in_your_tea 13 points 3 years ago

The longest running tool in our toolchain is pytest, followed somewhat closely by poetry. I work on a project with several teams, so I end up needing to reinstall deps pretty frequently.

It's not something I'm actively looking for, but I wouldn't say no to some improvements. But I need the additional features of poetry, so I probably won't bother until it gets a bit more sophisticated.

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takeda 5 points 3 years ago

The slowness of poetry is mostly due to network bottlenecks. While a Rust based tool, might be faster, it won't be a dramatic improvement, unlike the one we have seen with Ruff.

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sugar_in_your_tea 1 point 3 years ago

True, but poetry still has a long startup time (probably reading the lock file?) before it gets to the network parts. Also, a lot of the time spent in our projects is compiling/installing dependencies, not downloading them, and at least the install part could probably be sped up (I'm guessing async Rust is faster than whatever Poetry is doing).

But yeah, I'm not expecting huge wins here, but if it saves me a minute or so when rebuilding my docker images (currently takes >5 min in the poetry part alone), that's worth taking the time to switch.

I'm a lot more excited about projects like Ruff though, but any part of the Python tooling ecosystem is interesting.

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SatouKazuma 1 point 3 years ago

Damn. Poetry alone takes 5 minutes in Docker rebuilds? That's good to know.

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