Dependencies not included in package

[ss2165]

Originally reported by @sjdilkes
The wheels being built are not including dependencies. This is probably because the dependencies are only under the poetry tool section of pyproject.toml. They may need to be duplicated. Is there a way that avoids duplication?

[aborgna-q]

Short resume of various issues:

• PEP621 specifies that dependencies should go under [project]
• Maturin does not support poetry's custom pyproject fields. It expects it to follow PEP621.
  maturin#632
• Poetry has had an open issue about it for almost 4 years:
  Use the [project] section in pyproject.toml according to PEP-621 python-poetry/poetry#3332
• There's a recent draft PR in poetry that implements that. It will be included in "poetry 2.0.0", once that comes out.
  poetry#9135

So in short; we'll have to duplicate things for now :/