pyproject.toml

[build-system]
requires = [
  "setuptools", "wheel", "scikit-build", "cmake", "pip",
  "numpy==1.13.3; python_version=='3.6'",
  "numpy==1.14.5; python_version=='3.7'",
  "numpy==1.17.3; python_version=='3.8'",
  "numpy==1.19.3; python_version>='3.9'"
]