creating a custom installer iso

systems/installer/default.nix

@@ -0,0 +1,22 @@
+{
+  inputs,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
+{
+  imports = [ (modulesPath + "/installer/cd-dvd/installation-cd-minimal.nix") ];
+
+  environment.systemPackages = [
+    inputs.system_tools.packages.x86_64-linux.default
+  ];
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+
+  systemd.services.sshd.wantedBy = pkgs.lib.mkForce [ "multi-user.target" ];
+
+  users.users.root.openssh.authorizedKeys.keys = [
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJYZFsc9CSH03ZUP7y81AHwSyjLwFmcshVFCyxDcYhBT rhapsody-in-green" # cspell:disable-line
+  ];
+}