diff --git a/flake.nix b/flake.nix
index b213889..3264109 100644
--- a/flake.nix
+++ b/flake.nix
@@ -44,7 +44,6 @@
         ]
         ++ appDeps;
       buildDeps = [pkgs.dart-sass] ++ appDeps;
-      debugDeps = [pkgs.python3Packages.django-debug-toolbar] ++ runtimeDeps;
 
       geoip = pkgs.stdenv.mkDerivation {
         name = "geoip";
@@ -92,6 +91,11 @@
             --add-flags e11sync.wsgi \
             --add-flags --bind=127.0.0.1:${toString gunicornPort}
         '';
+        passthru.tests = {
+          simple = pkgs.runCommand {} "e11sync-test" ''
+            exit 1;
+          '';
+        };
       };
 
       apps.e11sync-gunicorn = {
@@ -104,7 +108,7 @@
         LOCALE_ARCHIVE = "${pkgs.glibcLocales}/lib/locale/locale-archive";
         GEOIP_PATH = "${geoip}";
         E11SYNC_DEBUG = "1";
-        packages = debugDeps;
+        packages = [pkgs.python3Packages.django-debug-toolbar] ++ runtimeDeps ++ buildDeps;
       };
 
       formatter = pkgs.alejandra;