Follow-up to the big reorg PR #455

Job	Run time
prepare	4s
Build with Pip (ubuntu-22.04, 3.8, llvm, -march=native)	1m 31s
Build with Pip (ubuntu-22.04, 3.8, llvm, -march=x86-64)	1m 7s
Build with Pip (ubuntu-22.04, 3.8, gcc, -march=native)	1m 27s
Build with Pip (ubuntu-22.04, 3.8, gcc, -march=x86-64)	1m 2s
Build with Pip (ubuntu-22.04, 3.11, llvm, -march=native)	1m 50s
Build with Pip (ubuntu-22.04, 3.11, llvm, -march=x86-64)	1m 6s
Build with Pip (ubuntu-22.04, 3.11, gcc, -march=native)	59s
Build with Pip (ubuntu-22.04, 3.11, gcc, -march=x86-64)	58s
Build with Pip (windows-2022, 3.8, msvc, /arch:AVX2)	11m 25s
Build with Pip (windows-2022, 3.8, msvc, /arch:SSE2)	11m 38s
Build with Pip (windows-2022, 3.8, llvm, /arch:AVX2)	11m 58s
Build with Pip (windows-2022, 3.8, llvm, /arch:SSE2)	11m 59s
Build with Pip (windows-2022, 3.11, msvc, /arch:AVX2)	11m 40s
Build with Pip (windows-2022, 3.11, msvc, /arch:SSE2)	11m 57s
Build with Pip (windows-2022, 3.11, llvm, /arch:AVX2)	13m 40s
Build with Pip (windows-2022, 3.11, llvm, /arch:SSE2)	11m 46s
Build with Pip (macos-13, 3.8, llvm, -march=native)	3m 11s
Build with Pip (macos-13, 3.8, llvm, -march=x86-64)	2m 35s
Build with Pip (macos-13, 3.8, gcc-14, -march=native)	2m 38s
Build with Pip (macos-13, 3.8, gcc-14, -march=x86-64)	2m 22s
Build with Pip (macos-13, 3.11, llvm, -march=native)	2m 34s
Build with Pip (macos-13, 3.11, llvm, -march=x86-64)	4m 32s
Build with Pip (macos-13, 3.11, gcc-14, -march=native)	2m 53s
Build with Pip (macos-13, 3.11, gcc-14, -march=x86-64)	2m 59s
	2h 9m 51s

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