diff --git a/flake.nix b/flake.nix
index aa18a46..1ca998a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -63,7 +63,6 @@
 
       e11sync-backend = pkgs.callPackage ./pkgs/e11sync-backend.nix {
         inherit geoip-mmdb;
-        uwsgi = pkgs.uwsgi.override {plugins = ["python3"];};
       };
     in {
       packages = {
diff --git a/pkgs/e11sync-backend.nix b/pkgs/e11sync-backend.nix
index f2dd1c4..9fdb87b 100644
--- a/pkgs/e11sync-backend.nix
+++ b/pkgs/e11sync-backend.nix
@@ -11,55 +11,57 @@
   backendPort ? 8002,
   database-path ? null,
   geoip-mmdb,
-}:
-stdenv.mkDerivation {
-  name = "e11sync-backend";
-  propagatedBuildInputs = [
-    (python3.withPackages
-      (ps: [
-        ps.django
-        ps.django-compressor
-        ps.geoip2
-      ]))
-    libmaxminddb
-  ];
-  nativeBuildInputs = [makeWrapper];
-  src = ../app;
-  patchPhase = ''patchShebangs --build manage.py'';
-  buildPhase = ''mkdir -p $out'';
-  installPhase = ''
-    cp -r . $out/app
-    makeWrapper $out/app/manage.py $out/bin/e11sync \
-      --set GEOIP_PATH "${geoip-mmdb}"
+}: let
+  uwsgi-python = uwsgi.override {plugins = ["python3"];};
+in
+  stdenv.mkDerivation {
+    name = "e11sync-backend";
+    propagatedBuildInputs = [
+      (python3.withPackages
+        (ps: [
+          ps.django
+          ps.django-compressor
+          ps.geoip2
+        ]))
+      libmaxminddb
+    ];
+    nativeBuildInputs = [makeWrapper];
+    src = ../app;
+    patchPhase = ''patchShebangs --build manage.py'';
+    buildPhase = ''mkdir -p $out'';
+    installPhase = ''
+      cp -r . $out/app
+      makeWrapper $out/app/manage.py $out/bin/e11sync \
+        --set GEOIP_PATH "${geoip-mmdb}"
 
-    makeWrapper ${uwsgi}/bin/uwsgi $out/bin/e11sync-backend \
-      --chdir $out/app \
-      --set-default E11SYNC_HTTP_PORT ${toString backendPort} \
-      --add-flags "--plugin ${uwsgi}/lib/uwsgi/python3_plugin.so" \
-      --add-flags "--http-socket 127.0.0.1:${toString backendPort}" \
-      --add-flags "--wsgi-file e11sync/wsgi.py" \
-      --add-flags --master \
-      ${lib.optionalString (database-path != null) ''
-      --set E11SYNC_DATABASE_PATH "${database-path}" \
-    ''} \
-      --set E11SYNC_DEBUG "" \
-      --set E11SYNC_COMPRESS_OFFLINE 1 \
-      --set GEOIP_PATH "${geoip-mmdb}" \
-  '';
-  passthru.tests.unit =
-    runCommand "e11sync-test" {
-      src = ../app;
-      buildInputs = [
-        python3Packages.django
-        python3Packages.django-compressor
-        python3Packages.geoip2
-        dart-sass
-      ];
-    } ''
-      unpackPhase
-      patchShebangs --build app/manage.py
-      export GEOIP_PATH="${geoip-mmdb}"
-      app/manage.py test app
-      mkdir -p $out
+      makeWrapper ${uwsgi-python}/bin/uwsgi $out/bin/e11sync-backend \
+        --chdir $out/app \
+        --set-default E11SYNC_HTTP_PORT ${toString backendPort} \
+        --add-flags "--plugin ${uwsgi-python}/lib/uwsgi/python3_plugin.so" \
+        --add-flags "--http-socket 127.0.0.1:${toString backendPort}" \
+        --add-flags "--wsgi-file e11sync/wsgi.py" \
+        --add-flags --master \
+        ${lib.optionalString (database-path != null) ''
+        --set E11SYNC_DATABASE_PATH "${database-path}" \
+      ''} \
+        --set E11SYNC_DEBUG "" \
+        --set E11SYNC_COMPRESS_OFFLINE 1 \
+        --set GEOIP_PATH "${geoip-mmdb}" \
     '';
-}
+    passthru.tests.unit =
+      runCommand "e11sync-test" {
+        src = ../app;
+        buildInputs = [
+          python3Packages.django
+          python3Packages.django-compressor
+          python3Packages.geoip2
+          dart-sass
+        ];
+      } ''
+        unpackPhase
+        patchShebangs --build app/manage.py
+        export GEOIP_PATH="${geoip-mmdb}"
+        app/manage.py test app
+        mkdir -p $out
+      '';
+  }