modernize build system #506

Job	Run time
build-mpi (3.9)	17s
build-docs (3.8)	17s
build-jax (3.8)	9s
build-mpi (3.10)	1m 37s
build-numpy (3.8, short)	10s
build-jax (3.9)	7s
build-numpy (3.8, optimize)	11s
build-jax (3.10)	47s
build-torch (3.8)	13s
build-numpy (3.8, multivariate)	8s
build-torch (3.9)	9s
build-numpy (3.8, optimize-experimental)	9s
build-torch (3.10)	1m 59s
build-numpy (3.9, short)	10s
build-numpy (3.9, optimize)	10s
build-numpy (3.9, multivariate)	10s
build-numpy (3.9, optimize-experimental)	13s
build-numpy (3.10, short)	42s
build-numpy (3.10, optimize)	42s
build-numpy (3.10, multivariate)	44s
build-numpy (3.10, optimize-experimental)	42s
	9m 46s

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