diff --git a/flake.lock b/flake.lock
index ea82eb6..6ba47bc 100644
--- a/flake.lock
+++ b/flake.lock
@@ -18,6 +18,27 @@
         "type": "github"
       }
     },
+    "nixfiles-private": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1745002185,
+        "narHash": "sha256-bdWS7dY1yUe+RfW9a3ySrorYq1S+pWJm4AE2J0yp3+I=",
+        "ref": "refs/tags/0.0.1",
+        "rev": "a0e92bad8feeb269f985a2d8112723bf5926528c",
+        "revCount": 2,
+        "type": "git",
+        "url": "ssh://forgejo@git.werkraum-karlsruhe.org/WRK/nixfiles-private"
+      },
+      "original": {
+        "ref": "refs/tags/0.0.1",
+        "type": "git",
+        "url": "ssh://forgejo@git.werkraum-karlsruhe.org/WRK/nixfiles-private"
+      }
+    },
     "nixos-hardware": {
       "locked": {
         "lastModified": 1743420942,
@@ -68,6 +89,7 @@
     "root": {
       "inputs": {
         "flake-parts": "flake-parts",
+        "nixfiles-private": "nixfiles-private",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs"
       }
diff --git a/flake.nix b/flake.nix
index 71ed062..ba9c782 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,6 +3,10 @@
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
     nixos-hardware.url = "github:NixOS/nixos-hardware/master";
     flake-parts.url = "github:hercules-ci/flake-parts";
+    nixfiles-private = {
+      url = "git+ssh://forgejo@git.werkraum-karlsruhe.org/WRK/nixfiles-private?ref=refs/tags/0.0.1";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs = inputs: inputs.flake-parts.lib.mkFlake { inherit inputs; }  {
diff --git a/hosts/backstage/configuration.nix b/hosts/backstage/configuration.nix
index 61aaadf..7fc64af 100644
--- a/hosts/backstage/configuration.nix
+++ b/hosts/backstage/configuration.nix
@@ -1,9 +1,10 @@
-{ config, lib, pkgs, ... }:
+{ inputs, config, lib, pkgs, ... }:
 
 {
   imports =
     [
       ../../services/sshd
+      inputs.nixfiles-private.nixosModules.hosts.backstage
     ];
 
   # Set your time zone.
@@ -24,27 +25,6 @@
     htop
   ];
 
-  users.users.root = {
-    openssh.authorizedKeys.keys = [
-      ''ssh-rsa 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''
-    ];
-  };
-
-  # Define a user account. Don't forget to set a password with ‘passwd’.
-  # users.users.alice = {
-  #   isNormalUser = true;
-  #   extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.
-  #   packages = with pkgs; [
-  #     tree
-  #   ];
-  # };
-
-  # List services that you want to enable:
-
-  # Open ports in the firewall.
-  # networking.firewall.allowedTCPPorts = [ ... ];
-  # networking.firewall.allowedUDPPorts = [ ... ];
-
   # Copy the NixOS configuration file and link it from the resulting system
   # (/run/current-system/configuration.nix). This is useful in case you
   # accidentally delete configuration.nix.