macos

Merge pull request #210 from tcbrindle/pr/failfast #673

Job	Run time
build (LLVM-Clang-16, Headers, Debug)	1m 8s
build (LLVM-Clang-16, Headers, Release)	1m 18s
build (LLVM-Clang-17, Headers, Debug)	1m 45s
build (LLVM-Clang-17, Headers, Release)	1m 31s
build (LLVM-Clang-17, Module, Debug)	1m 11s
build (LLVM-Clang-17, Module, Release)	1m 17s
build (LLVM-Clang-18, Headers, Debug)	1m 31s
build (LLVM-Clang-18, Headers, Release)	1m 41s
build (LLVM-Clang-18, Module, Debug)	1m 18s
build (LLVM-Clang-18, Module, Release)	1m 55s
	14m 35s

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