diff --git a/flake.nix b/flake.nix
index a0b3fc1..bdb1cd3 100644
--- a/flake.nix
+++ b/flake.nix
@@ -94,19 +94,13 @@
       };
 
       devShells.default = pkgs.mkShellNoCC {
-        packages = with pkgs; [
-          (python3.withPackages
-            (ps: [
-              ps.django
-              ps.geoip2
-
-              ps.django-debug-toolbar
-              ps.flake8
-              # TODO: vim integration via EXITINT? See make check
-              ps.autopep8
-            ]))
-          libmaxminddb
-          dart-sass
+        packages = [
+          (
+            pkgs.python3.withPackages
+            (p: with p; [django geoip2 django-debug-toolbar flake8 autopep8])
+          )
+          pkgs.libmaxminddb
+          pkgs.dart-sass
         ];
         GEOIP_PATH = "${pkgs.geoip-mmdb}";
         E11SYNC_DEBUG = "1";
diff --git a/pkgs/e11sync-backend.nix b/pkgs/e11sync-backend.nix
index 03ec0ed..697d58f 100644
--- a/pkgs/e11sync-backend.nix
+++ b/pkgs/e11sync-backend.nix
@@ -5,7 +5,6 @@
   makeWrapper,
   python3,
   libmaxminddb,
-  dart-sass,
   uwsgi,
   backendPort ? 8002,
   databasePath ? null,
@@ -13,12 +12,7 @@
   e11sync-static,
 }: let
   uwsgi-python = uwsgi.override {plugins = ["python3"];};
-  pythonEnv =
-    python3.withPackages
-    (ps: [
-      ps.django
-      ps.geoip2
-    ]);
+  pythonEnv = python3.withPackages (ps: [ps.django ps.geoip2]);
 in
   stdenv.mkDerivation {
     name = "e11sync-backend";
@@ -56,10 +50,7 @@ in
     passthru.tests.unit =
       runCommand "e11sync-test" {
         srcs = ../app;
-        buildInputs = [
-          pythonEnv
-          dart-sass
-        ];
+        buildInputs = [pythonEnv];
       } ''
         unpackPhase
         patchShebangs --build app/manage.py
diff --git a/pkgs/e11sync-static.nix b/pkgs/e11sync-static.nix
index dba56a6..0c27039 100644
--- a/pkgs/e11sync-static.nix
+++ b/pkgs/e11sync-static.nix
@@ -24,8 +24,7 @@
 
       # remove unversioned files
       (cd app/_static;
-        ${jq}/bin/jq -r '.paths | keys[]' staticfiles.json | \
-        xargs rm
+        ${jq}/bin/jq -r '.paths | keys[]' staticfiles.json | xargs rm
       )
 
       find app/_static \