added nixos.sops module

modules/hosts/test-nix.nix

@@ -4,35 +4,15 @@ let
   hostname = "test-nix";
 in
 {
-  flake.modules.nixos."${hostname}" = { pkgs, lib, ...}: {
-    networking.hostName = "${hostname}";
-    services.openssh = {
-      enable = true;
-      # require public key authentication for better security
-      settings.PasswordAuthentication = false;
-      settings.KbdInteractiveAuthentication = false;
-    };
-
-    imports = with inputs.sops-nix.nixosModules; [
-      sops
-    ];
-
-    sops.defaultSopsFile = ../../keys/secrets.yaml;
-    sops.secrets."test-nix/ssh_host_key" = {
-      owner = "john";
-      path = "/home/john/.ssh/host_key";
-    };
-  };
-
   flake.nixosConfigurations."${hostname}" = inputs.nixpkgs.lib.nixosSystem {
     modules = with inputs.self.modules; [
-      nixos."${hostname}"
       nixos.lxc
+      nixos.sops
+      nixos.step-client
       inputs.home-manager.nixosModules.home-manager
       nixos."${username}"
       nixos.zsh
       nixos.docker
-      nixos.step-client
       {
         home-manager.users."${username}" = {
           imports = with inputs.self.modules.homeManager; [