Are both poetry and setuptools necessary?

I am working on improving how this package is bundled in [nixpkgs](https://github.com/NixOS/nixpkgs) and notice that both poetry and setuptools are declared as build dependencies in pyproject.toml. Also, there is a setup.cfg and setup.py file. Are both of these build tools necessary?

Start by comparing the build dependencies declared in pyproject.toml with the packaging configuration in setup.cfg and setup.py. Determine whether both Poetry and setuptools are required, then make the packaging configuration use only the necessary tools and verify that the package still builds for nixpkgs.

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