Follow-up to the big reorg PR #440

Job	Run time
prepare	2s
Build with Pip (ubuntu-22.04, 3.8, llvm, -march=native)	1m 27s
Build with Pip (ubuntu-22.04, 3.8, llvm, -march=x86-64)	1m 13s
Build with Pip (ubuntu-22.04, 3.8, gcc, -march=native)	1m 2s
Build with Pip (ubuntu-22.04, 3.8, gcc, -march=x86-64)	53s
Build with Pip (ubuntu-22.04, 3.11, llvm, -march=native)	1m 16s
Build with Pip (ubuntu-22.04, 3.11, llvm, -march=x86-64)	1m 11s
Build with Pip (ubuntu-22.04, 3.11, gcc, -march=native)	1m 18s
Build with Pip (ubuntu-22.04, 3.11, gcc, -march=x86-64)	54s
Build with Pip (windows-2022, 3.8, msvc, /arch:AVX2)	11m 59s
Build with Pip (windows-2022, 3.8, msvc, /arch:SSE2)	10m 48s
Build with Pip (windows-2022, 3.8, llvm, /arch:AVX2)	12m 39s
Build with Pip (windows-2022, 3.8, llvm, /arch:SSE2)	11m 48s
Build with Pip (windows-2022, 3.11, msvc, /arch:AVX2)	11m 31s
Build with Pip (windows-2022, 3.11, msvc, /arch:SSE2)	12m 48s
Build with Pip (windows-2022, 3.11, llvm, /arch:AVX2)	11m 44s
Build with Pip (windows-2022, 3.11, llvm, /arch:SSE2)	12m 22s
Build with Pip (macos-13, 3.8, llvm, -march=native)	2m 52s
Build with Pip (macos-13, 3.8, llvm, -march=x86-64)	4m 56s
Build with Pip (macos-13, 3.8, gcc-14, -march=native)	2m 12s
Build with Pip (macos-13, 3.8, gcc-14, -march=x86-64)	2m 46s
Build with Pip (macos-13, 3.11, llvm, -march=native)	4m 41s
Build with Pip (macos-13, 3.11, llvm, -march=x86-64)	7m 51s
Build with Pip (macos-13, 3.11, gcc-14, -march=native)	3m 19s
Build with Pip (macos-13, 3.11, gcc-14, -march=x86-64)	2m 22s
	2h 15m 54s

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