trying to fix windows build #26

Job	Run time
macOS / release / homebrew-clang	5m 10s
Windows / release / msvc	24m 11s
macOS / debug / homebrew-clang	4m 49s
Windows / release / clang-cl	19m 31s
macOS / release / system-clang	5m 34s
Windows / release / llvm	23m 2s
macOS / debug / system-clang	3m 56s
Windows / debug / msvc	19m 58s
Windows / debug / clang-cl	18m 57s
Windows / debug / llvm	19m 48s
	2h 24m 56s

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