diff --git a/modules/first-login-ui.nix b/modules/first-login-ui.nix
new file mode 100644
index 0000000..0bad9dc
--- /dev/null
+++ b/modules/first-login-ui.nix
@@ -0,0 +1,31 @@
+{ pkgs, ... }:
+
+let
+  firstLoginUi = pkgs.stdenv.mkDerivation {
+    pname = "nixos-first-login-ui";
+    version = "0.1.0";
+
+    src = ../first-login-ui;
+
+    nativeBuildInputs = [
+      pkgs.cmake
+      pkgs.ninja
+      pkgs.pkg-config
+      pkgs.kdePackages.wrapQtAppsHook
+    ];
+
+    buildInputs = with pkgs.kdePackages; [
+      qtbase
+      qtdeclarative
+      qtwayland
+      kirigami
+    ];
+  };
+in
+{
+  # V1 : uniquement l'interface graphique de prévisualisation.
+  # Aucun autostart et aucune modification de mot de passe / PIN.
+  environment.systemPackages = [
+    firstLoginUi
+  ];
+}