diff -up src/sage/graphs/graph_decompositions/sage_tdlib.cpp.orig src/sage/graphs/graph_decompositions/sage_tdlib.cpp
--- a/src/sage/graphs/graph_decompositions/sage_tdlib.cpp	2021-05-09 16:00:11.000000000 -0600
+++ b/src/sage/graphs/graph_decompositions/sage_tdlib.cpp	2021-06-16 08:33:47.325415307 -0600
@@ -2,8 +2,8 @@
 #include <map>
 
 #include <boost/graph/adjacency_list.hpp>
-#include "tdlib/TD_combinations.hpp"
-#include "tdlib/TD_misc.hpp"
+#include <treedec/combinations.hpp>
+#include <treedec/misc.hpp>
 
 #ifndef TD_STRUCT_VERTEX
 #define TD_STRUCT_VERTEX
@@ -16,13 +16,6 @@ struct Vertex{
 
 typedef boost::adjacency_list<boost::setS, boost::vecS, boost::undirectedS, Vertex> TD_graph_t;
 
-struct bag{
-    std::set<unsigned int> bag;
-};
-
-typedef boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS, bag> TD_tree_dec_t;
-
-
 void make_tdlib_graph(TD_graph_t &G, std::vector<unsigned int> &V, std::vector<unsigned int> &E){
     unsigned int max = 0;
     for(unsigned int i = 0; i < V.size(); i++)