Follow-up to the big reorg PR #435

Job	Run time
prepare	2s
Build with Pip (ubuntu-22.04, 3.8, llvm, -march=native)	1m 15s
Build with Pip (ubuntu-22.04, 3.8, llvm, -march=x86-64)	1m 6s
Build with Pip (ubuntu-22.04, 3.8, gcc, -march=native)	57s
Build with Pip (ubuntu-22.04, 3.8, gcc, -march=x86-64)	1m 1s
Build with Pip (ubuntu-22.04, 3.11, llvm, -march=native)	1m 12s
Build with Pip (ubuntu-22.04, 3.11, llvm, -march=x86-64)	1m 8s
Build with Pip (ubuntu-22.04, 3.11, gcc, -march=native)	59s
Build with Pip (ubuntu-22.04, 3.11, gcc, -march=x86-64)	56s
Build with Pip (windows-2022, 3.8, msvc, /arch:AVX2)	11m 56s
Build with Pip (windows-2022, 3.8, msvc, /arch:SSE2)	12m 4s
Build with Pip (windows-2022, 3.8, llvm, /arch:AVX2)	12m 33s
Build with Pip (windows-2022, 3.8, llvm, /arch:SSE2)	11m 49s
Build with Pip (windows-2022, 3.11, msvc, /arch:AVX2)	12m 4s
Build with Pip (windows-2022, 3.11, msvc, /arch:SSE2)	11m 46s
Build with Pip (windows-2022, 3.11, llvm, /arch:AVX2)	11m 46s
Build with Pip (windows-2022, 3.11, llvm, /arch:SSE2)	12m 14s
Build with Pip (macos-13, 3.8, llvm, -march=native)	20m 0s
Build with Pip (macos-13, 3.8, llvm, -march=x86-64)	15m 15s
Build with Pip (macos-13, 3.8, gcc-14, -march=native)	2m 3s
Build with Pip (macos-13, 3.8, gcc-14, -march=x86-64)	3m 19s
Build with Pip (macos-13, 3.11, llvm, -march=native)	4m 29s
Build with Pip (macos-13, 3.11, llvm, -march=x86-64)	17m 46s
Build with Pip (macos-13, 3.11, gcc-14, -march=native)	3m 26s
Build with Pip (macos-13, 3.11, gcc-14, -march=x86-64)	2m 39s
	2h 53m 45s

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