diff --git a/modules/mesh-delivery-builder/internal/build/plan.go b/modules/mesh-delivery-builder/internal/build/plan.go
index fe5c300c..05db3a88 100644
--- a/modules/mesh-delivery-builder/internal/build/plan.go
+++ b/modules/mesh-delivery-builder/internal/build/plan.go
@@ -67,7 +67,7 @@ func (p Plan) NeedsToolchain(module string) bool {
 type Refused struct{ Artifact, What string }
 
 func (r *Refused) Error() string {
-	return fmt.Sprintf("%s%s (artifact %s): no build module builds it; the builder builds Go and TypeScript bundles, archives, images, upstream copies and TypeScript packages", builds.RefusedKind, r.What, r.Artifact)
+	return fmt.Sprintf("%s%s (artifact %s): no build module builds it; the builder builds Go and TypeScript bundles and packages, archives, images and upstream copies", builds.RefusedKind, r.What, r.Artifact)
 }
 
 // NotPinned is the error of a plan with an upstream artifact whose reference names no digest (ADR 0498 clause 4): it opens
@@ -90,7 +90,7 @@ func (n *NoBuildModule) Unwrap() error { return n.Err }
 
 // PlanOf is the plan of a manifest (ADR 0478 clauses 1 and 2, ADR 0498 clauses 4 and 5): a Go bundle and an archive are
 // built by the Go build module, an image by the image build module (ADR 0487), which also copies an upstream image pinned
-// by its digest, and a TypeScript bundle or package by the Node one, each in the order of the artifacts' names. A manifest
+// by its digest, a Go package by the Go one (design 47 G §370) and a TypeScript bundle or package by the Node one, each in the order of the artifacts' names. A manifest
 // with an upstream artifact pinned by no digest, or a bundle or a package of another language, or a kind no build module
 // builds, is refused as a whole, naming the first such artifact by name. A manifest with no artifact has an empty plan.
 func PlanOf(m catalogue.Manifest, seats *buildrun.BuildSeats) (Plan, error) {
@@ -125,7 +125,8 @@ func PlanOf(m catalogue.Manifest, seats *buildrun.BuildSeats) (Plan, error) {
 			return Plan{}, &NotPinned{Artifact: a.Name, From: a.From}
 		case a.Kind == catalogue.ArtifactUpstream:
 			err = task(a, "", "image")
-		case a.Kind == catalogue.ArtifactPackage && a.Language == "typescript":
+		case a.Kind == catalogue.ArtifactPackage && (a.Language == "go" || a.Language == "typescript"):
+			// A Go package is packed by the Go build module, tagged with the version its build reserved (design 47 G §370).
 			err = task(a, a.Language, a.Kind)
 		case a.Kind == catalogue.ArtifactBundle:
 			return Plan{}, &Refused{Artifact: a.Name, What: fmt.Sprintf("bundle of language %q", a.Language)}
diff --git a/modules/mesh-delivery-builder/internal/build/plan_test.go b/modules/mesh-delivery-builder/internal/build/plan_test.go
index a1ef8b83..3d4a17c6 100644
--- a/modules/mesh-delivery-builder/internal/build/plan_test.go
+++ b/modules/mesh-delivery-builder/internal/build/plan_test.go
@@ -22,13 +22,15 @@ func TestPlanRoutesEachKindToItsBuildModule(t *testing.T) { // 1607/AC2
 	m := manifestOf(
 		catalogue.Artifact{Name: "tool", Kind: "bundle", Language: "go"},
 		catalogue.Artifact{Name: "web", Kind: "bundle", Language: "typescript"},
-		catalogue.Artifact{Name: "files", Kind: "archive"})
+		catalogue.Artifact{Name: "files", Kind: "archive"},
+		catalogue.Artifact{Name: "go-overlay", Kind: "package", Language: "go"}) // design 47 G §370: a Go package is built
 	p, err := PlanOf(m, testSeats())
 	if err != nil {
 		t.Fatal(err)
 	}
 	want := []Task{
 		{Artifact: "files", Kind: "archive", Module: testGo, Language: "go"},
+		{Artifact: "go-overlay", Kind: "package", Module: testGo, Language: "go"},
 		{Artifact: "tool", Kind: "bundle", Module: testGo, Language: "go"},
 		{Artifact: "web", Kind: "bundle", Module: testNode, Language: "typescript"},
 	}