gnome: Add changes missing from branch merge

Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>

plinth/action_utils.py

@@ -36,15 +36,9 @@ def systemd_get_default() -> str:
     return process.stdout.decode().strip()
 
 
-def systemd_set_default(target: str, isolate: bool = True):
-    """Set the default target that systemd will boot into.
-
-    If 'isolate' is True, then immediate switch the current system target to
-    newly set target resulting in starting/stopping of services.
-    """
+def systemd_set_default(target: str):
+    """Set the default target that systemd will boot into."""
     subprocess.run(['systemctl', 'set-default', target], check=True)
-    if isolate:
-        subprocess.run(['systemctl', 'isolate', target], check=True)
 
 
 def service_daemon_reload():

plinth/modules/gnome/__init__.py

@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: AGPL-3.0-or-later
 """FreedomBox app to configure GNOME desktop."""
 
+from django.urls import reverse_lazy
 from django.utils.translation import gettext_lazy as _
 
 from plinth import action_utils
@@ -23,8 +24,12 @@ _description = [
           'You may install further graphical applications using the software '
           'center provided within.'), box_name=_(cfg.box_name)),
     _('This app is not suitable for low-end hardware. It requires at least '
-      '4GiB for RAM, 4GiB or disk space and a GPU capable of basic 3D '
+      '4GiB of RAM, 4GiB of disk space and a GPU capable of basic 3D '
       'acceleration.'),
+    format_lazy(
+        _('After installing, enabling, disabling, or uninstalling the app, '
+          'you will need to <a href="{power_url}">restart</a> the machine for '
+          'changes to take effect.'), power_url=reverse_lazy('power:restart')),
 ]
 
 

plinth/modules/gnome/manifest.py

@@ -3,7 +3,7 @@
 
 from django.utils.translation import gettext_lazy as _
 
-backup = {}
+backup: dict = {}
 
 tags = [
     _('Desktop'),

plinth/privileged/service.py

@@ -9,12 +9,12 @@ from plinth.daemon import Daemon, RelatedDaemon
 
 
 @privileged
-def systemd_set_default(target: str, isolate: bool = True):
+def systemd_set_default(target: str):
     """Set the default target that systemd will boot into."""
     if target not in ['graphical.target', 'multi-user.target']:
         raise ValueError('Invalid target')
 
-    action_utils.systemd_set_default(target, isolate)
+    action_utils.systemd_set_default(target)
 
 
 @privileged