diff --git a/pkgs/desktops/gnome-3/extensions/chrome-gnome-shell/default.nix b/pkgs/desktops/gnome-3/extensions/chrome-gnome-shell/default.nix
index 1e3815705cd3..ee0bb82b284a 100644
--- a/pkgs/desktops/gnome-3/extensions/chrome-gnome-shell/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/chrome-gnome-shell/default.nix
@@ -1,29 +1,53 @@
-{stdenv, fetchurl, cmake, ninja, jq, python3, gnome3, wrapGAppsHook}:
+{ stdenv
+, fetchurl
+, cmake
+, ninja
+, jq
+, python3
+, gnome3
+, wrapGAppsHook
+}:
 
 let
-  version = "10.1";
-
   inherit (python3.pkgs) python pygobject3 requests;
-in stdenv.mkDerivation rec {
+in
+stdenv.mkDerivation rec {
   pname = "chrome-gnome-shell";
-  inherit version;
+  version = "10.1";
 
   src = fetchurl {
     url = "mirror://gnome/sources/chrome-gnome-shell/${version}/${pname}-${version}.tar.xz";
     sha256 = "0f54xyamm383ypbh0ndkza0pif6ljddg2f947p265fkqj3p4zban";
   };
 
-  nativeBuildInputs = [ cmake ninja jq wrapGAppsHook ];
-  buildInputs = [ gnome3.gnome-shell python pygobject3 requests ];
+  nativeBuildInputs = [
+    cmake
+    ninja
+    jq
+    wrapGAppsHook
+  ];
+
+  buildInputs = [
+    gnome3.gnome-shell
+    python
+    pygobject3
+    requests
+  ];
+
+  cmakeFlags = [
+    "-DBUILD_EXTENSION=OFF"
+  ];
+
+  wrapPrefixVariables = [
+    "PYTHONPATH"
+  ];
+
+  # cmake setup hook changes /etc/opt into /var/empty
+  dontFixCmake = true;
 
   preConfigure = ''
     substituteInPlace CMakeLists.txt --replace "/etc" "$out/etc"
   '';
-  # cmake setup hook changes /etc/opt into /var/empty
-  dontFixCmake = true;
-
-  cmakeFlags = [ "-DBUILD_EXTENSION=OFF" ];
-  wrapPrefixVariables = [ "PYTHONPATH" ];
 
   passthru = {
     updateScript = gnome3.updateScript {