In theory, sure, but there's no way Hare is going to ever officially support Windows. Even if the compiled backend supports the target, the language still needs to abstract over the OS interfaces and implement syscalls.
I'm not familiar with the language but if it targets libc, it might be easily able to work with MINGW. There are mingw/native versions of most popular libraries.
I'm not familiar with the language but if it targets libc, it might be easily able to work with MINGW. There are mingw/native versions of most popular libraries.