Can't agree more. We were using pyenv+poetry before and regularly had to pin our poetry version to a specific one, because new poetry releases would stall trying to resolve dependencies.
pyenv was problematic because you needed the right concoction of system packages to ensure it compiled python with the right features, and we have a mix of MacOS and Linux devs so this was often non-trivial.
uv is much faster than both of these tools, has a more ergonomic CLI, and solves both of the issues I just mentioned.
I'm hoping astral's type checker is suitably good once released, because we're on mypy right now and it's a constant source of frustration (slow and buggy).
> because new poetry releases would stall trying to resolve dependencies.
> uv is much faster than both of these tools
conda is also (in)famous for being slow at this, although the new mamba solver is much faster. What does uv do in order to resolve dependencies much faster?
> What does uv do in order to resolve dependencies much faster?
- Representing version numbers as single integer for fast comparison.
- Being implemented in rust rather than Python (compared to Poetry)
- Parallel downloads
- Caching individual files rather than zipped wheel, so installation is just hard-linking files, zero copy (on unix at least). Also makes it very storage efficient.