disable topological sort when unnecessary

lib/sort.py

@@ -21,6 +21,10 @@ def topological_sort(source):
 
 
 def sort_libs_by_dependencies(selected_libs):
+    # no need for sorting in case of only one lib
+    if len(selected_libs) < 2:
+        return selected_libs
+
     deplist = []
     for lib in selected_libs:
         name = lib['name']