changes #554

Job	Run time
install (ocaml-base-compiler.4.10.1, ubuntu-latest)	8m 45s
install (ocaml-base-compiler.4.11.2, ubuntu-latest)	9m 5s
install (ocaml-base-compiler.4.12.1, ubuntu-latest)	9m 6s
install (ocaml-base-compiler.4.13.1, ubuntu-latest)	9m 10s
install (ocaml-base-compiler.4.14.0, ubuntu-latest)	9m 18s
install (ocaml-variants.4.14.0+options,ocaml-option-flambda, ubuntu-latest)	9m 54s
install (ocaml-base-compiler.5.0.0, ubuntu-latest)	10m 47s
install (ocaml-base-compiler.4.10.1, macos-latest)	23m 57s
install (ocaml-base-compiler.4.11.2, macos-latest)	17m 9s
install (ocaml-base-compiler.4.12.1, macos-latest)	23m 56s
install (ocaml-base-compiler.4.13.1, macos-latest)	15m 51s
install (ocaml-base-compiler.4.14.0, macos-latest)	15m 45s
install (ocaml-variants.4.14.0+options,ocaml-option-flambda, macos-latest)	15m 11s
install (ocaml-base-compiler.5.0.0, macos-latest)	17m 58s
install (ocaml-variants.4.10.1+mingw64c, windows-latest)	14m 27s
install (ocaml-variants.4.11.2+mingw64c, windows-latest)	16m 35s
install (ocaml-variants.4.12.1+mingw64c, windows-latest)	13m 50s
install (ocaml-variants.4.13.1+mingw64c, windows-latest)	14m 56s
install (ocaml-variants.4.14.0+mingw64c, windows-latest)	14m 17s
install (ocaml-variants.4.14.0+flambda+mingw64c, windows-latest)	15m 33s
	4h 45m 30s

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