https://bugs.winehq.org/show_bug.cgi?id=53085
--- Comment #5 from Esme Povirk madewokherd@gmail.com --- Documented here: https://docs.microsoft.com/en-us/dotnet/framework/tools/installutil-exe-inst...
Looks like Mono has a version of it: https://github.com/mono/mono/tree/main/mcs/tools/installutil
Maybe we can just install that.