Revert "nixos/nix/cross-compiling: do not enable QEMU emulation if Ta…

…ilscale is enabled"

This reverts commit 824a57e.

nixos/nix/cross-compiling.nix

@@ -9,15 +9,15 @@ in
     emulatedSystems = lib.mkOption {
       description = "List of systems to emulate via QEMU";
       type = lib.types.listOf lib.types.str;
-      default = lib.optionals (!config.nixos.desktop.tailscale.enable) [ "aarch64-linux" ];
+      default = [ "aarch64-linux" ];
     };
   };
 
   config = lib.mkIf cfg.enable {
     # Allow compilation of packages ARM/ARM64 architectures via QEMU
     # e.g. nix-build -A <pkg> --argstr system aarch64-linux
     # https://nixos.wiki/wiki/NixOS_on_ARM#Compiling_through_QEMU
-    boot.binfmt = lib.mkIf (cfg.emulatedSystems != [ ]) {
+    boot.binfmt = {
       inherit (cfg) emulatedSystems;
     };