Use networkx for component hierarchy

rocolib/library/__init__.py

+import networkx as nx
 from os import system
 from os.path import dirname, realpath, basename, join
 from glob import glob
@@ -22,18 +23,16 @@ def getSubcomponents(c):
     except FileNotFoundError:
         return set()
 
+def getComponentNx():
+    net = nx.DiGraph()
+    net.add_nodes_from(allComponents)
+    for c in allComponents:
+        for sc in getSubcomponents(c):
+            net.add_edge(sc, c)
+    return net
+
 def getComponentTree():
-    tree = []
-    ac = set(allComponents)
-    while ac:
-        leaves = []
-        for c in ac:
-            subcomponents = getSubcomponents(c)
-            if not subcomponents.intersection(ac):
-                leaves.append(c)
-        tree.append(sorted(leaves))
-        ac -= set(leaves)
-    return tree
+    return nx.topological_generations(getComponentNx())
 
 def getComponent(c, **kwargs):
     '''