gnome.gnome-shell-extensions: patch GTop path for the GNOME System Monitor extension

Formatted with `nixfmt-rfc-style`.

(cherry picked from commit 78ecb9195e)

pkgs/desktops/gnome/core/gnome-shell-extensions/default.nix

@@ -1,14 +1,16 @@
-{ lib
-, stdenv
-, fetchurl
-, meson
-, ninja
-, gettext
-, pkg-config
-, glib
-, gnome
-, gnome-menus
-, substituteAll
+{
+  lib,
+  stdenv,
+  fetchurl,
+  meson,
+  ninja,
+  gettext,
+  pkg-config,
+  libgtop,
+  glib,
+  gnome,
+  gnome-menus,
+  substituteAll,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -25,6 +27,10 @@ stdenv.mkDerivation (finalAttrs: {
       src = ./fix_gmenu.patch;
       gmenu_path = "${gnome-menus}/lib/girepository-1.0";
     })
+    (substituteAll {
+      src = ./fix_gtop.patch;
+      gtop_path = "${libgtop}/lib/girepository-1.0";
+    })
   ];
 
   nativeBuildInputs = [
@@ -35,9 +41,7 @@ stdenv.mkDerivation (finalAttrs: {
     glib
   ];
 
-  mesonFlags = [
-    "-Dextension_set=all"
-  ];
+  mesonFlags = [ "-Dextension_set=all" ];
 
   preFixup = ''
     # Since we do not install the schemas to central location,

pkgs/desktops/gnome/core/gnome-shell-extensions/fix_gtop.patch

@@ -0,0 +1,25 @@
+diff --git a/extensions/system-monitor/extension.js b/extensions/system-monitor/extension.js
+index 37d2eb1..232d0d5 100644
+--- a/extensions/system-monitor/extension.js
++++ b/extensions/system-monitor/extension.js
+@@ -6,9 +6,9 @@
+ 
+ import Clutter from 'gi://Clutter';
+ import Gio from 'gi://Gio';
++import GIRepository from "gi://GIRepository";
+ import GLib from 'gi://GLib';
+ import GObject from 'gi://GObject';
+-import GTop from 'gi://GTop';
+ import Pango from 'gi://Pango';
+ import Shell from 'gi://Shell';
+ import St from 'gi://St';
+@@ -19,6 +19,9 @@ import * as PopupMenu from 'resource:///org/gnome/shell/ui/popupMenu.js';
+ 
+ import * as Main from 'resource:///org/gnome/shell/ui/main.js';
+ 
++GIRepository.Repository.prepend_search_path('@gtop_path@');
++const GTop = (await import("gi://GTop")).default;
++
+ const THRESHOLD_HIGH = 0.80;
+ 
+ // adapted from load-graph.cpp in gnome-system-monitor