Report kanshi config errors in the info bar only

src/outputs.c

@@ -53,11 +53,7 @@ static void config_handle_succeeded(void *data,
   zwlr_output_configuration_v1_destroy(config);
   wd_ui_apply_done(pending->state, pending->outputs);
 #ifdef WITH_KANSHI
-  if (wd_store_config(pending->outputs) == 0)
-  {
-    wd_ui_show_error(pending->state,
-      "Change was applied successfully and config was saved.");
-  }
+  wd_store_config(pending->state, pending->outputs);
 #endif
   destroy_pending(pending);
 }

src/store.c

@@ -513,7 +513,7 @@ static bool write_config(const char *path, const char *contents,
   return g_file_set_contents(path, contents, -1, error);
 }
 
-int wd_store_config(struct wl_list *outputs) {
+void wd_store_config(struct wd_state *state, struct wl_list *outputs) {
   g_autofree char *path = get_config_path();
   g_autofree char *contents = NULL;
   g_autofree char *updated = NULL;
@@ -529,9 +529,10 @@ int wd_store_config(struct wl_list *outputs) {
   if (updated == NULL || !write_config(path, updated, &error)) {
     goto err;
   }
-  return 0;
+  return;
 
-err:
-  fprintf(stderr, "Could not save the kanshi config %s: %s\n", path, error->message);
-  return 1;
+err:;
+  g_autofree char *message = g_strdup_printf(
+      "Could not save the kanshi config %s: %s", path, error->message);
+  wd_ui_show_error(state, message);
 }

src/wdisplays.h

@@ -349,7 +349,7 @@ void wd_destroy_overlay(struct wd_output *output);
 /*
  * Updates kanshi config
  */
-int wd_store_config(struct wl_list *outputs);
+void wd_store_config(struct wd_state *state, struct wl_list *outputs);
 #endif
 // SPDX-SnippetEnd
 #endif