<!-- Checked checkbox should look like this: [x] --> - [x] I have searched the [issues](https://github.com/sdispater/poetry/issues) of this repo and believe that this is not a duplicate. - [x] I have searched the [documentation](https://poetry.eustace.io/docs/) and believe that my question is not covered. ## Question How is a dependency added so that poetry will run something like this: ``` pip3 install -U 'numpy >=1.17,<2.0' --no-binary numpy ``` What does that look like in the `pyproject.toml` file? PS. See a work-around using poetry export in https://github.com/python-poetry/poetry/issues/365#issuecomment-792054069