mpi4py>=3.0.0

[:python_version < "3.8"]
cached-property

[:python_version == "3.6"]
numpy>=1.12

[:python_version == "3.7"]
numpy>=1.14.5

[:python_version == "3.8"]
numpy>=1.17.5

[:python_version >= "3.9"]
numpy>=1.19.3
