diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..05e183a
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,7 @@
+.PHONY: check
+test:
+	nix build .#e11sync-gunicorn.tests.simple -L
+
+.PHONY: gunicorn
+gunicorn:
+	nix run .#e11sync-gunicorn
diff --git a/app/e11sync/urls.py b/app/e11sync/urls.py
index 5e21633..951d390 100644
--- a/app/e11sync/urls.py
+++ b/app/e11sync/urls.py
@@ -17,9 +17,11 @@ Including another URLconf
 
 from django.contrib import admin
 from django.urls import include, path
+from django.conf import settings
 
 urlpatterns = [
     path('admin/', admin.site.urls),
-    path("__debug__/", include("debug_toolbar.urls")),
+    ] + [
+        path("__debug__/", include("debug_toolbar.urls"))] if settings.DEBUG else [] + [
     path('', include('signup.urls')),
 ]
diff --git a/flake.nix b/flake.nix
index 3264109..e76a5d9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -88,13 +88,20 @@
             --set E11SYNC_DEBUG "" \
             --set E11SYNC_COMPRESS_OFFLINE 1 \
             --set GEOIP_PATH "${geoip}" \
-            --add-flags e11sync.wsgi \
-            --add-flags --bind=127.0.0.1:${toString gunicornPort}
+            --add-flags --bind=127.0.0.1:${toString gunicornPort} \
+            --add-flags e11sync.wsgi
         '';
         passthru.tests = {
-          simple = pkgs.runCommand {} "e11sync-test" ''
-            exit 1;
-          '';
+          simple =
+            pkgs.runCommand "e11sync-test" {
+              src = self;
+              buildInputs = runtimeDeps ++ buildDeps;
+            } ''
+              mkdir -p $out
+              cd ${self}/app
+              export GEOIP_PATH="${geoip}"
+              ${pkgs.python3}/bin/python3 ./manage.py test
+            '';
         };
       };