Add binfmt qemu system emulation

system/hardware/binfmt.nix

@@ -0,0 +1,35 @@
+{ pkgs, config, lib, ... }:
+let
+
+  configForSystem = (system:
+    let
+      riscv = [ "riscv32-linux" "riscv64-linux" ];
+      arm = [ "armv6l-linux" "armv7l-linux" "aarch64-linux" ];
+      x86 = [ "i686-linux" "x86_64-linux" ];
+      windows = [ "x86_64-windows" "i686-windows" ];
+      systems = {
+        x86_64-linux = riscv ++ arm ++ windows;
+        aarch64-linux = riscv;
+      };
+    in
+      if (systems ? "${system}") then systems."${system}" else []
+  );
+  emulatedSystems = configForSystem "${pkgs.system}";
+  cfg = config.nixfiles.binfmt;
+in
+{
+  options.nixfiles.binfmt = {
+    enable = lib.mkOption {
+      description = "Whether to configure default binfmt emulated systems for the current architecture";
+      type = lib.types.bool;
+      default = false;
+      example = true;
+    };
+  };
+
+  config = lib.mkMerge [
+    (lib.mkIf (cfg.enable && (builtins.length emulatedSystems) > 0) {
+      boot.binfmt = {inherit emulatedSystems;}; 
+    })
+  ];
+}

system/hardware/default.nix

@@ -5,5 +5,6 @@
     ./nvidia.nix
     ./opengl.nix
     ./sound.nix
+    ./binfmt.nix
   ];
 }

system/profile/base.nix

@@ -17,6 +17,7 @@ in
         # Enable system Nix configuration
         nix.enable = lib.mkDefault true;
       };
+      nixfiles.binfmt.enable = true;
 
       # locale settings
       i18n = {