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I'll pay attention to poetry soon. As is, I don't recall my builds ever going slow because of poetry. I don't think I've noticed it have any impact on speed, at all.

I did just update the dependencies of some of my projects. I could see how that could be faster. I don't do that often enough for me to care about it, though. `poetry run pytest` is the slowest thing I have, and I'm confident most of that slowness is in my direct control already.

I'm intrigued on the lock file point. I thought that was literally one of the main reasons to use something like poetry, in the first place? Does uv have a better lock file mechanism?





uv supports the standardised lock file format. This means that you're not tied to uv for anything, as most project settings it uses (eg metadata, dependencies, extras, etc.) are based on PEPs. poetry has its own format for many things.

https://peps.python.org/pep-0751/


Ah, I see that this is a newer format than the projects I've been using poetry for. Are there advantages to move to it?

Interoperability being the major one. You can switch between uv and other tools (such as pdm and hatch) with minimal effort.



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