gistfile.patch

diff --git a/lib/can-place-dep.js b/lib/can-place-dep.js
index 6be59093..e4eba7ac 100644
--- a/lib/can-place-dep.js
+++ b/lib/can-place-dep.js
@@ -145,7 +145,9 @@ class CanPlaceDep {
       return CONFLICT
     }
 
-    if (targetEdge && !dep.satisfies(targetEdge) && targetEdge !== this.edge) {
+    // skip this test if there's a current node, because we might be able
+    // to dedupe against it anyway
+    if (!current && targetEdge && !dep.satisfies(targetEdge) && targetEdge !== this.edge) {
       return CONFLICT
     }