While this seems to be true, poetry seems to (as far as I can tell) exist in its own independent ecosystem. There’s very little participation that I’ve seen from poetry users on the packaging forums, so it’s hard for those of us involved with the more traditional packaging tools to get a sense of it. I’d like to know more about poetry, but I don’t have a currently project where I could use it, so it’s hard to get a start on learning about it.
The “one tool” idea does seem very prevalent these days, and there’s a lot of pressure on pip to be that “one tool”, as well. But I’m not sure it’s the right role for pip, so I’d love to get a better sense of what alternatives there are (I know about pipenv, for example, but that seems to address a slightly different problem - application development rather than library development).