modernize build system #508

Job	Run time
build-docs (3.8)	3m 42s
build-numpy (3.8, short)	1m 46s
build-mpi (3.9)	6h 0m 16s
build-numpy (3.8, optimize)	1m 55s
build-mpi (3.10)	1m 39s
build-jax (3.8)	1m 48s
build-numpy (3.8, multivariate)	1m 25s
build-torch (3.8)	2m 17s
build-numpy (3.8, optimize-experimental)	2m 6s
build-torch (3.9)	2m 19s
build-jax (3.9)	55s
build-numpy (3.9, short)	1m 51s
build-jax (3.10)	57s
build-torch (3.10)	2m 15s
build-numpy (3.9, optimize)	1m 57s
build-numpy (3.9, multivariate)	1m 30s
build-numpy (3.9, optimize-experimental)	2m 14s
build-numpy (3.10, short)	1m 52s
build-numpy (3.10, optimize)	1m 55s
build-numpy (3.10, multivariate)	1m 28s
build-numpy (3.10, optimize-experimental)	2m 10s
	6h 38m 17s

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