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.
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.