trying to fix windows build #26

Job	Run time
Ubuntu / Release / gcc	22m 33s
macOS / Release / homebrew-clang	7m 7s
Ubuntu / Debug / gcc	16m 21s
macOS / Debug / homebrew-clang	7m 2s
Ubuntu / Release / clang	17m 35s
macOS / Release / system-clang	7m 14s
Ubuntu / Debug / clang	13m 35s
macOS / Debug / system-clang	4m 23s
Windows / Release / cl	29m 6s
Windows / Release / clang	30m 3s
Windows / Release / clang-cl	18m 11s
Windows / Debug / cl	24m 46s
Windows / Debug / clang	16m 27s
Windows / Debug / clang-cl	28m 1s
	4h 2m 24s

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