fix detailed diff v2

pkg/tfbridge/detailed_diff.go

@@ -393,6 +393,7 @@ func makeDetailedDiffV2(
 	diff shim.InstanceDiff,
 	assets AssetTable,
 	supportsSecrets bool,
+	oldInputs, newInputs resource.PropertyMap,
 ) (map[string]*pulumirpc.PropertyDiff, error) {
 	// We need to compare the new and olds after all transformations have been applied.
 	// ex. state upgrades, implementation-specific normalizations etc.

pkg/tfbridge/provider.go

@@ -1169,7 +1169,16 @@ func (p *Provider) Diff(ctx context.Context, req *pulumirpc.DiffRequest) (*pulum
 			changes = pulumirpc.DiffResponse_DIFF_SOME
 		}
 
-		detailedDiff, err = makeDetailedDiffV2(ctx, schema, fields, res.TF, p.tf, state, diff, assets, p.supportsSecrets)
+		oldInputs, err := plugin.UnmarshalProperties(req.GetOldInputs(),
+			plugin.MarshalOptions{Label: fmt.Sprintf("%s.oldInputs", label), SkipNulls: true})
+		if err != nil {
+			return nil, err
+		}
+
+		detailedDiff, err = makeDetailedDiffV2(
+			ctx, schema, fields, res.TF, p.tf, state, diff, assets, p.supportsSecrets, oldInputs, news,
+		)
+
 		if err != nil {
 			return nil, err
 		}

pkg/tfbridge/recover_set_order.go

@@ -101,4 +101,4 @@ func recoverSetOrder(
 		propertyPath := SchemaPathToPropertyPath(setPath, tfs, ps)
 		recoverSetOrderSingle(target, origin, propertyPath)
 	}
-}
+}