diff --git a/cmds/exp/tsort/graph.go b/cmds/extra/tsort/graph.go similarity index 100% rename from cmds/exp/tsort/graph.go rename to cmds/extra/tsort/graph.go diff --git a/cmds/exp/tsort/graph_test.go b/cmds/extra/tsort/graph_test.go similarity index 100% rename from cmds/exp/tsort/graph_test.go rename to cmds/extra/tsort/graph_test.go diff --git a/cmds/exp/tsort/multiset.go b/cmds/extra/tsort/multiset.go similarity index 100% rename from cmds/exp/tsort/multiset.go rename to cmds/extra/tsort/multiset.go diff --git a/cmds/exp/tsort/multiset_test.go b/cmds/extra/tsort/multiset_test.go similarity index 100% rename from cmds/exp/tsort/multiset_test.go rename to cmds/extra/tsort/multiset_test.go diff --git a/cmds/exp/tsort/queue.go b/cmds/extra/tsort/queue.go similarity index 100% rename from cmds/exp/tsort/queue.go rename to cmds/extra/tsort/queue.go diff --git a/cmds/exp/tsort/queue_test.go b/cmds/extra/tsort/queue_test.go similarity index 100% rename from cmds/exp/tsort/queue_test.go rename to cmds/extra/tsort/queue_test.go diff --git a/cmds/exp/tsort/set.go b/cmds/extra/tsort/set.go similarity index 100% rename from cmds/exp/tsort/set.go rename to cmds/extra/tsort/set.go diff --git a/cmds/exp/tsort/set_test.go b/cmds/extra/tsort/set_test.go similarity index 100% rename from cmds/exp/tsort/set_test.go rename to cmds/extra/tsort/set_test.go diff --git a/cmds/exp/tsort/tsort.go b/cmds/extra/tsort/tsort.go similarity index 100% rename from cmds/exp/tsort/tsort.go rename to cmds/extra/tsort/tsort.go diff --git a/cmds/exp/tsort/tsort_test.go b/cmds/extra/tsort/tsort_test.go similarity index 100% rename from cmds/exp/tsort/tsort_test.go rename to cmds/extra/tsort/tsort_test.go