Support for ARM64 Windows

Summary

I was wondering whether it would be possible to build an ARM64 Windows GHC. One thing I'm not immediately understanding is how do we bootstrap such a compiler? Do I need to build a cross compiler targeting arm64 windows to then build a native arm64 windows compiler?

This came up as I was trying to debug a windows issue with virtualization on my aarch64 M2 machine, and was using an aarch64 virtualized windows for performance... Emulating a x64 windows on arm is much more expensive unfortunately.