I can second this... poetry is a seriously good project and matches PEP standards for the pyproject.toml, you will definitely see more projects jumping onto that standard soon.
Sébastien Eustace is a really awesome developer, I've used Pendulum and Orator as well as Poetry for projects, the documentation is beautiful and complete, the APIs are well thought out, and if you find an issue contributing back to the project is simple and straightforward (I'm happy to have a few PRs accepted into Orator).
There's a certain joy working with tools when it's clear that the person making those tools actually cares about the developer and making it work well.
There's a certain joy working with tools when it's clear that the person making those tools actually cares about the developer and making it work well.