build

view: setup placeholders on view packs - close #1224 #5188

Job	Run time
extra (windows-latest, std::uint32_t, cxx_std_17)	2m 41s
extra (windows-latest, std::uint32_t, cxx_std_20)	2m 44s
linux (g++, g++, 12)	2m 45s
extra (windows-latest, std::uint64_t, cxx_std_17)	2m 5s
linux (g++, g++, 13)	2m 8s
extra (windows-latest, std::uint64_t, cxx_std_20)	2m 26s
macos	1m 25s
linux (g++, g++, 14)	2m 9s
extra (macOS-latest, std::uint32_t, cxx_std_17)	1m 2s
linux (clang, clang++, 16)	2m 23s
extra (macOS-latest, std::uint32_t, cxx_std_20)	1m 8s
linux (clang, clang++, 17)	2m 21s
windows (default)	3m 7s
extra (macOS-latest, std::uint64_t, cxx_std_17)	1m 4s
linux (clang, clang++, 18)	2m 26s
windows (v142)	2m 58s
extra (macOS-latest, std::uint64_t, cxx_std_20)	1m 7s
windows (clang-cl)	2m 7s
extra (ubuntu-latest, std::uint32_t, cxx_std_17)	1m 51s
extra (ubuntu-latest, std::uint32_t, cxx_std_20)	2m 13s
extra (ubuntu-latest, std::uint64_t, cxx_std_17)	1m 59s
extra (ubuntu-latest, std::uint64_t, cxx_std_20)	2m 10s
	46m 19s

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