gnome.gnome-shell: Provide schema compiler path

This is required for installing extensions containing schemas since GNOME 44:

> Error while installing just-perfection-desktop@just-perfection: Failed to execute child process “glib-compile-schemas” (No such file or directory)

While at it, also unify the other patched paths.

This adds `glib.dev` to the GNOME Shell runtime closure but it is just 20 MiB increase to 1.9 GiB.

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

@@ -80,8 +80,10 @@ stdenv.mkDerivation rec {
     # Hardcode paths to various dependencies so that they can be found at runtime.
     (substituteAll {
       src = ./fix-paths.patch;
-      inherit libgnomekbd unzip;
+      gkbd_keyboard_display = "${lib.getBin libgnomekbd}/bin/gkbd-keyboard-display";
+      glib_compile_schemas = "${glib.dev}/bin/glib-compile-schemas";
       gsettings = "${glib.bin}/bin/gsettings";
+      unzip = "${lib.getBin unzip}/bin/unzip";
     })
 
     # Use absolute path for libshew installation to make our patched gobject-introspection

pkgs/desktops/gnome/core/gnome-shell/fix-paths.patch

@@ -10,27 +10,62 @@ index de91167c5..1c9965678 100644
 +ExecStart=@gsettings@ set org.gnome.shell disable-user-extensions true
  Restart=no
 diff --git a/js/ui/extensionDownloader.js b/js/ui/extensionDownloader.js
-index 8bf4646a6..59e88bb4c 100644
+index 197cc1c1c..dd74aa167 100644
 --- a/js/ui/extensionDownloader.js
 +++ b/js/ui/extensionDownloader.js
-@@ -114,7 +114,7 @@ async function extractExtensionArchive(bytes, dir) {
+@@ -110,7 +110,7 @@ async function extractExtensionArchive(bytes, dir) {
      stream.close_async(GLib.PRIORITY_DEFAULT, null);
  
      const unzip = Gio.Subprocess.new(
 -        ['unzip', '-uod', dir.get_path(), '--', file.get_path()],
-+        ['@unzip@/bin/unzip', '-uod', dir.get_path(), '--', file.get_path()],
++        ['@unzip@', '-uod', dir.get_path(), '--', file.get_path()],
          Gio.SubprocessFlags.NONE);
      await unzip.wait_check_async(null);
- }
+ 
+@@ -132,7 +132,7 @@ async function extractExtensionArchive(bytes, dir) {
+     }
+ 
+     const compileSchema = Gio.Subprocess.new(
+-        ['glib-compile-schemas', '--strict', schemasPath.get_path()],
++        ['@glib_compile_schemas@', '--strict', schemasPath.get_path()],
+         Gio.SubprocessFlags.NONE);
+ 
+     try {
 diff --git a/js/ui/status/keyboard.js b/js/ui/status/keyboard.js
-index bc50f3d37..868eb5abf 100644
+index fff4e73c2..92859b099 100644
 --- a/js/ui/status/keyboard.js
 +++ b/js/ui/status/keyboard.js
-@@ -1080,6 +1080,6 @@ class InputSourceIndicator extends PanelMenu.Button {
+@@ -1092,6 +1092,6 @@ class InputSourceIndicator extends PanelMenu.Button {
          if (xkbVariant.length > 0)
-             description = '%s\t%s'.format(description, xkbVariant);
+             description = `${description}\t${xkbVariant}`;
  
 -        Util.spawn(['gkbd-keyboard-display', '-l', description]);
-+        Util.spawn(['@libgnomekbd@/bin/gkbd-keyboard-display', '-l', description]);
++        Util.spawn(['@gkbd_keyboard_display@', '-l', description]);
      }
  });
+diff --git a/subprojects/extensions-tool/src/command-install.c b/subprojects/extensions-tool/src/command-install.c
+index 11fb4b6b7..e00e4807b 100644
+--- a/subprojects/extensions-tool/src/command-install.c
++++ b/subprojects/extensions-tool/src/command-install.c
+@@ -158,7 +158,7 @@ install_extension (const char *bundle,
+ 
+       schemapath = g_file_get_path (schemadir);
+       proc = g_subprocess_new (G_SUBPROCESS_FLAGS_STDERR_SILENCE, &error,
+-                               "glib-compile-schemas", "--strict", schemapath,
++                               "@glib_compile_schemas@", "--strict", schemapath,
+                                NULL);
+ 
+       if (!g_subprocess_wait_check (proc, NULL, &error))
+diff --git a/subprojects/extensions-tool/src/command-pack.c b/subprojects/extensions-tool/src/command-pack.c
+index f2cfcd51a..2a9a7efdf 100644
+--- a/subprojects/extensions-tool/src/command-pack.c
++++ b/subprojects/extensions-tool/src/command-pack.c
+@@ -168,7 +168,7 @@ extension_pack_add_schemas (ExtensionPack  *pack,
+ #else
+   dstpath = g_file_get_path (dstdir);
+   proc = g_subprocess_new (G_SUBPROCESS_FLAGS_STDERR_SILENCE, error,
+-                           "glib-compile-schemas", "--strict", dstpath, NULL);
++                           "@glib_compile_schemas@", "--strict", dstpath, NULL);
+ 
+   if (!g_subprocess_wait_check (proc, NULL, error))
+     return FALSE;