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path: root/gnu/packages/patches/xfce4-panel-plugins.patch
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Search for xfce4 panel plugins in the directories specified
in XDG_DATA_DIRS and X_XFCE4_LIB_DIRS.  For discussion of the
relevant issues, see:

  https://bugzilla.xfce.org/show_bug.cgi?id=5455

Patch by Mark H Weaver <mhw@netris.org>

--- xfce4-panel-4.10.0/panel/panel-module.c.orig	2012-04-28 16:31:35.000000000 -0400
+++ xfce4-panel-4.10.0/panel/panel-module.c	2014-12-14 01:31:55.728107386 -0500
@@ -35,8 +35,14 @@
 #include <panel/panel-plugin-external-wrapper.h>
 #include <panel/panel-plugin-external-46.h>
 
-#define PANEL_PLUGINS_LIB_DIR (LIBDIR G_DIR_SEPARATOR_S "panel" G_DIR_SEPARATOR_S "plugins")
-#define PANEL_PLUGINS_LIB_DIR_OLD (LIBDIR G_DIR_SEPARATOR_S "panel-plugins")
+#define PANEL_PLUGINS_LIB_DIR_TAIL (G_DIR_SEPARATOR_S "panel" G_DIR_SEPARATOR_S "plugins")
+#define PANEL_PLUGINS_LIB_DIR_TAIL_OLD (G_DIR_SEPARATOR_S "panel-plugins")
+
+static const gchar *plugins_lib_dir_tails[] =
+{
+  PANEL_PLUGINS_LIB_DIR_TAIL,
+  PANEL_PLUGINS_LIB_DIR_TAIL_OLD
+};
 
 
 typedef enum _PanelModuleRunMode PanelModuleRunMode;
@@ -335,21 +341,39 @@
           /* show a messsage if the old module path key still exists */
           g_message ("Plugin %s: The \"X-XFCE-Module-Path\" key is "
                      "ignored in \"%s\", the panel will look for the "
-                     "module in %s. See bug #5455 why this decision was made",
-                     name, filename, PANEL_PLUGINS_LIB_DIR);
+                     "module in DIR%s for each DIR in $X_XFCE4_LIB_DIRS "
+                     "(%s by default).  See bug #5455 for discussion.",
+                     name, filename, PANEL_PLUGINS_LIB_DIR_TAIL, LIBDIR);
         }
 #endif
 
-      path = g_module_build_path (PANEL_PLUGINS_LIB_DIR, module_name);
-      found = g_file_test (path, G_FILE_TEST_EXISTS);
+      /* search for module */
+      {
+        gchar   *dirs_string;
+        gchar  **dirs;
+        int      i, j;
+
+        dirs_string = (gchar *) g_getenv ("X_XFCE4_LIB_DIRS");
+        if (!dirs_string)
+          dirs_string = LIBDIR;
+        dirs = g_strsplit (dirs_string, G_SEARCHPATH_SEPARATOR_S, 0);
+
+        found = FALSE;
+        path = NULL;
+
+        for (i = 0; !found && dirs[i] != NULL; i++)
+          for (j = 0; !found && j < G_N_ELEMENTS (plugins_lib_dir_tails); j++)
+            {
+              gchar *dir = g_strconcat (dirs[i], plugins_lib_dir_tails[j], NULL);
+
+              g_free (path);
+              path = g_module_build_path (dir, module_name);
+              found = g_file_test (path, G_FILE_TEST_EXISTS);
+              g_free (dir);
+            }
 
-      if (!found)
-        {
-          /* deprecated location for module plugin directories */
-          g_free (path);
-          path = g_module_build_path (PANEL_PLUGINS_LIB_DIR_OLD, module_name);
-          found = g_file_test (path, G_FILE_TEST_EXISTS);
-        }
+        g_strfreev (dirs);
+      }
 
       if (G_LIKELY (found))
         {
--- xfce4-panel-4.10.0/panel/panel-module-factory.c.orig	2012-04-28 16:31:35.000000000 -0400
+++ xfce4-panel-4.10.0/panel/panel-module-factory.c	2014-12-13 23:55:27.439404812 -0500
@@ -42,6 +42,11 @@
 #define PANEL_PLUGINS_DATA_DIR     (DATADIR G_DIR_SEPARATOR_S "panel" G_DIR_SEPARATOR_S "plugins")
 #define PANEL_PLUGINS_DATA_DIR_OLD (DATADIR G_DIR_SEPARATOR_S "panel-plugins")
 
+static const gchar *plugins_data_dir_tails[] =
+{
+  (G_DIR_SEPARATOR_S "xfce4" G_DIR_SEPARATOR_S "panel" G_DIR_SEPARATOR_S "plugins"),
+  (G_DIR_SEPARATOR_S "xfce4" G_DIR_SEPARATOR_S "panel-plugins")
+};
 
 
 static void     panel_module_factory_finalize        (GObject                  *object);
@@ -223,8 +228,22 @@
 panel_module_factory_load_modules (PanelModuleFactory *factory,
                                    gboolean            warn_if_known)
 {
+  const gchar * const * system_data_dirs;
+  int i, j;
+
   panel_return_if_fail (PANEL_IS_MODULE_FACTORY (factory));
 
+  system_data_dirs = g_get_system_data_dirs ();
+  for (i = 0; system_data_dirs[i] != NULL; i++)
+    for (j = 0; j < G_N_ELEMENTS (plugins_data_dir_tails); j++)
+    {
+      gchar *dir;
+
+      dir = g_strconcat (system_data_dirs[i], plugins_data_dir_tails[j], NULL);
+      panel_module_factory_load_modules_dir (factory, dir, warn_if_known);
+      g_free (dir);
+    }
+
   /* load from the new and old location */
   panel_module_factory_load_modules_dir (factory, PANEL_PLUGINS_DATA_DIR, warn_if_known);
   panel_module_factory_load_modules_dir (factory, PANEL_PLUGINS_DATA_DIR_OLD, warn_if_known);