[gnome-builder] flatpak: override some settings in flatpak environment

[Christian Hergert <chergert src gnome org>]

commit 298f10c01307b388d73936c2b2467c599819a6b8
Author: Christian Hergert <chergert redhat com>
Date:   Mon Nov 29 15:54:00 2021 -0800

    flatpak: override some settings in flatpak environment
    
    We want to make sure that applications can use things like the GTK
    inspector out of the box. This makes it a bit easier by writing to the
    keyfile that will be used by the flatpak application.
    
    In the future, we want a more generic way to handle this so that we can
    provide additional features in the Run popover such as theme.
    
    Fixes #1264

 src/plugins/flatpak/gbp-flatpak-runner.c | 49 +++++++++++++++++++++++++++++++-
 1 file changed, 48 insertions(+), 1 deletion(-)
---
diff --git a/src/plugins/flatpak/gbp-flatpak-runner.c b/src/plugins/flatpak/gbp-flatpak-runner.c
index 3dff40428..90796a71e 100644
--- a/src/plugins/flatpak/gbp-flatpak-runner.c
+++ b/src/plugins/flatpak/gbp-flatpak-runner.c
@@ -19,10 +19,12 @@
  */
 
 #define G_LOG_DOMAIN "gbp-flatpak-runner"
+#define G_SETTINGS_ENABLE_BACKEND
 
 #include <errno.h>
-#include <stdlib.h>
+#include <gio/gsettingsbackend.h>
 #include <glib/gi18n.h>
+#include <stdlib.h>
 #include <unistd.h>
 
 #include "gbp-flatpak-aux.h"
@@ -223,6 +225,50 @@ gbp_flatpak_runner_new (IdeContext     *context,
   return g_steal_pointer (&self);
 }
 
+static void
+override_settings (GbpFlatpakRunner *self)
+{
+  g_autoptr(GSettingsBackend) backend = NULL;
+  g_autoptr(GSettings) settings = NULL;
+  g_autofree char *filename = NULL;
+  IdeConfigManager *config_manager;
+  IdeContext *context;
+  const char *app_id;
+  IdeConfig *config;
+
+  g_assert (GBP_IS_FLATPAK_RUNNER (self));
+
+  if (!(context = ide_object_get_context (IDE_OBJECT (self))) ||
+      !(config_manager = ide_config_manager_from_context (context)) ||
+      !(config = ide_config_manager_get_current (config_manager)) ||
+      !(app_id = ide_config_get_app_id (config)))
+    return;
+
+  filename = g_build_filename (g_get_home_dir (), ".var", "app", app_id,
+                               "config", "glib-2.0", "settings", "keyfile",
+                               NULL);
+  backend = g_keyfile_settings_backend_new (filename, "/", NULL);
+  settings = g_settings_new_with_backend ("org.gtk.Settings.Debug", backend);
+
+  g_settings_set_boolean (settings, "enable-inspector-keybinding", TRUE);
+}
+
+static void
+gbp_flatpak_runner_run_async (IdeRunner           *runner,
+                              GCancellable        *cancellable,
+                              GAsyncReadyCallback  callback,
+                              gpointer             user_data)
+{
+  GbpFlatpakRunner *self = (GbpFlatpakRunner *)runner;
+
+  g_assert (GBP_IS_FLATPAK_RUNNER (self));
+  g_assert (!cancellable || G_IS_CANCELLABLE (cancellable));
+
+  override_settings (self);
+
+  IDE_RUNNER_CLASS (gbp_flatpak_runner_parent_class)->run_async (runner, cancellable, callback, user_data);
+}
+
 static void
 gbp_flatpak_runner_finalize (GObject *object)
 {
@@ -244,6 +290,7 @@ gbp_flatpak_runner_class_init (GbpFlatpakRunnerClass *klass)
 
   runner_class->create_launcher = gbp_flatpak_runner_create_launcher;
   runner_class->fixup_launcher = gbp_flatpak_runner_fixup_launcher;
+  runner_class->run_async = gbp_flatpak_runner_run_async;
 }
 
 static void