poetry2nix has actually been deprecated[1], and is in my experience subtly broken, as is the entire python packaging mechanism in Nix[2].
So we're now getting yet another attempt, this time called pyproject-nix[3].
I'm now considering taking similar stab with common lisp packaging, because the amount of time I lost fighting Nix trying to run a development environment is making me reconsider using Nix at all.
[1] https://github.com/nix-community/poetry2nix#:~:text=announce...
[2] https://pyproject-nix.github.io/pyproject.nix/build.html