NixOS on Hyper-V on aarch64 architecture ( e.g Recent Surface Pro Models )

• Building the ISO ( ran this inside a hyperv VM on my surface pro 11)

nix-build '<nixpkgs/nixos>' \
  -A config.system.build.isoImage \
  -I nixos-config="$PWD/hyperv-iso.nix" \
  -o "$PWD/result"