--- a/gtk/deprecated/gtkrc.c	2016-04-02 18:43:08.401663112 +0900
+++ b/gtk/deprecated/gtkrc.c	2016-04-02 18:29:19.927608592 +0900
@@ -774,5 +774,23 @@
   if (var)
     result = g_strdup (var);
 
+  // check NIX_PROFILES paths.
+  const gchar *nixProfilesEnv = g_getenv ("NIX_PROFILES");
+  gchar *cachePath;
+  guint i;
+
+  if(nixProfilesEnv && !result){
+    gchar **paths = g_strsplit(nixProfilesEnv, " ", -1);
+    for (i = 0; paths[i] != NULL; i++){
+      cachePath = g_build_filename(paths[i], "etc", "gtk-3.0", "immodules.cache", NULL);
+      if( g_file_test( cachePath, G_FILE_TEST_EXISTS) ){
+        if(result) g_free(result);
+        result = g_strdup(cachePath);
+      }
+      g_free(cachePath);
+    }
+    g_strfreev(paths);
+  }
+
   if (!result)
     {