setup.py depends on numpy

[fredrik-johansson]

Not a big problem in practice, but there should be a cleaner way to set the paths.

[mazar]

Why not have minimum needed code included in the setup.py, so there won't be a need to reference numpy? (something like this)

If it is absolutely necessary to reference numpy, maybe we should add pyproject.toml per PEP-518:

[build-system]
# Minimum requirements for the build system to execute.
requires = ["setuptools", "wheel", "cython", "numpy"]  # PEP 508 specifications.

[oscarbenjamin]

The setup.py no longer users numpy for Python >= 3.12 and uses setuptools instead. When older Python versions are no longer supported numpy will not be needed any more.