diff --git a/lib/spack/spack/binary_distribution.py b/lib/spack/spack/binary_distribution.py
index ed5fbfe053d..87b951bd92a 100644
--- a/lib/spack/spack/binary_distribution.py
+++ b/lib/spack/spack/binary_distribution.py
@@ -2110,7 +2110,7 @@ def relocate_package(spec):
             dependent_edges = spec[name].edges_from_dependents()
             virtuals = set()
             for edge in dependent_edges:
-                virtuals.update(edge.parameters["virtuals"])
+                virtuals.update(edge.virtuals)
             for virtual in virtuals:
                 try:
                     lookup_dag_hash = spec.build_spec[virtual].dag_hash()
diff --git a/lib/spack/spack/schema/concretizer.py b/lib/spack/spack/schema/concretizer.py
index c93c8e7e261..e1c4d64ce1c 100644
--- a/lib/spack/spack/schema/concretizer.py
+++ b/lib/spack/spack/schema/concretizer.py
@@ -62,18 +62,6 @@
                 },
             },
             "os_compatible": {"type": "object", "additionalProperties": {"type": "array"}},
-            "explicit_splices": {
-                "type": "array",
-                "default": [],
-                "items": {
-                    "type": "object",
-                    "properties": {
-                        "target": {"type": "string"},
-                        "replacement": {"type": "string"},
-                        "transitive": {"type": "boolean", "default": False},
-                    },
-                },
-            },
         },
     }
 }