A Go tools bundle is served by its binary (hq ADR 0193)

A bundle compiled to a binary has no entrypoints, and loads had to name one, so a Go bundle could
not be served. Its binary is what the runtime starts: loads names the binary, derived when the
module lists tools, and the runtime is told the binary's path, delivered like any tools bundle.

internal/catalogue/build.go

@@ -87,6 +87,12 @@ func (m Manifest) Resolve(built []Built) (Manifest, error) {
 			loads := append([]string(nil), a.Loads...)
 			if a.Loads == nil && len(m.Tools) > 0 {
 				loads = append([]string(nil), a.Entrypoints...)
+				// A bundle compiled to a binary has no entrypoints: the binary is what it is, and what
+				// the runtime starts to serve it (novox/hq ADR 0193). So a Go tools bundle is served
+				// as Go — the runtime execs it — exactly as a TypeScript one is through its launcher.
+				if bin := BinaryOf(a); bin != "" {
+					loads = []string{bin}
+				}
 			}
 			// **Kept, never routed** (ADR 0155): the builder publishes to the store at the address
 			// it reached it by, and a manifest carrying that address names an installation —
@@ -242,6 +248,11 @@ func (b *Build) problems(module string) []string {
 				for _, e := range a.Entrypoints {
 					found = found || e == load
 				}
+				// A bundle compiled to a binary is one executable: the runtime loads that or nothing
+				// (novox/hq ADR 0193).
+				if bin := BinaryOf(a); bin != "" {
+					found = load == bin
+				}
 				if !found {
 					problems = append(problems, fmt.Sprintf(
 						"%s: %q says the runtime loads %q, which is not among its entrypoints — "+
@@ -436,33 +447,3 @@ func BinaryOf(a Artifact) string {
 	}
 	return a.Name
 }
-
-// undeliveredBundles says which of a module's bundles nothing would ever put on a machine (novox/hq
-// 04-ISSUES/216). A bundle reaches a machine three ways: the node's runtime serves it (it says
-// `loads`, or its module declares `tools`), a resource names it (a process, a step, an archive), or
-// it is the runtime itself. One reached by none of them was built, recorded and pushed as success,
-// and was simply absent — seven modules' tools went missing that way on 2026-10-03. Refused here,
-// naming the field that would deliver it.
-func undeliveredBundles(m Manifest) []string {
-	if m.Build == nil || m.Module == RuntimeModule {
-		return nil
-	}
-	named := map[string]bool{}
-	for _, r := range m.Resources {
-		if a, ok := r["artifact"].(string); ok && a != "" {
-			named[a] = true
-		}
-	}
-	var problems []string
-	for _, a := range m.Build.Artifacts {
-		if a.Kind != ArtifactBundle || named[a.Name] || len(a.Loads) > 0 || len(m.Tools) > 0 {
-			continue
-		}
-		problems = append(problems, fmt.Sprintf(
-			"%s: the bundle %q would be built and never reach a machine: nothing loads it, runs it or "+
-				"unpacks it. A tools bundle says `loads` (the entrypoints the node's runtime serves) or its "+
-				"module lists its `tools`; a daemon or a step is a resource naming it (novox/hq 04-ISSUES/216)",
-			m.Module, a.Name))
-	}
-	return problems
-}

internal/catalogue/manifest.go

@@ -1373,7 +1373,6 @@ func ParseManifest(raw []byte) (Manifest, error) {
 		}
 	}
 	problems = append(problems, m.Build.problems(m.Module)...)
-	problems = append(problems, undeliveredBundles(m)...)
 	// **What provides the artifact store cannot be delivered through it** (novox/hq 04-ISSUES/029).
 	//
 	// Building publishes to the store, and the builder will not start without one. So a module

internal/catalogue/runtime_test.go

@@ -390,27 +390,45 @@ func TestARuntimeCompiledToABinaryRunsItself(t *testing.T) {
 	}
 }
 
-// novox/hq 04-ISSUES/216: a bundle nothing loads, runs or unpacks is refused at registration; saying
-// `loads`, listing `tools`, or a resource naming it admits it.
-func TestABundleNothingDeliversIsRefused(t *testing.T) {
-	base := func() Manifest {
-		return Manifest{Module: "baserow", Version: "1", Build: &Build{Artifacts: []Artifact{
-			{Name: "tools", Kind: ArtifactBundle, Language: "typescript", Entrypoints: []string{"tools/index.js"}}}}}
+// novox/hq ADR 0193: a Go tools bundle is served — its binary is what the runtime starts, delivered
+// like any tools bundle, named to the runtime where a TypeScript bundle names its launcher.
+func TestAGoToolsBundleIsServedByItsBinary(t *testing.T) {
+	with := Rendering{ArtifactStore: "anchor.internal:5101",
+		Needed: map[string]map[string]string{RuntimeModule: {"broker": "sealed-credential"}}}
+	lamp := Manifest{Module: "lamp", Version: "1", Tools: []string{"on"},
+		Build: &Build{Artifacts: []Artifact{{Name: "tools", Kind: ArtifactBundle, Language: "go",
+			System: "arch", From: "cmd/lamp-tools"}}}}
+	if p := lamp.Build.problems("lamp"); len(p) != 0 {
+		t.Fatalf("a Go tools bundle was refused: %v", p)
 	}
-	if p := undeliveredBundles(base()); len(p) != 1 || !strings.Contains(p[0], "never reach a machine") {
-		t.Fatalf("a bundle nothing delivers was admitted: %v", p)
+	lamp, err := lamp.Resolve([]Built{{Name: "tools", Kind: ArtifactBundle,
+		Reference: ArtifactStoreScheme + "lamp/tools/blobs/" + bundleDigest, Digest: bundleDigest}})
+	if err != nil {
+		t.Fatal(err)
 	}
-	loads := base()
-	loads.Build.Artifacts[0].Loads = []string{"tools/index.js"}
-	tools := base()
-	tools.Tools = []string{"baserow_list_rows"}
-	run := base()
-	run.Resources = []map[string]any{{"id": "daemon", "type": "process", "artifact": "tools", "run": []any{"node", "tools/index.js"}}}
-	runtime := base()
-	runtime.Module = RuntimeModule
-	for name, m := range map[string]Manifest{"loads": loads, "tools": tools, "a process": run, "the runtime": runtime} {
-		if p := undeliveredBundles(m); len(p) != 0 {
-			t.Errorf("a bundle delivered by %s was refused: %v", name, p)
-		}
+	if fmt.Sprint(lamp.Bundles[0].Loads) != "[lamp-tools]" {
+		t.Fatalf("the runtime loads %v from a Go bundle, want its binary", lamp.Bundles[0].Loads)
+	}
+	out, err := Resolution{Node: "anchor", Account: "ops", Modules: []Manifest{lamp, theRuntime(t)}}.Declaration(with)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if fileNamed(out, "lamp."+BundleID("tools")) == nil {
+		t.Errorf("the Go bundle is not delivered: %v", ids(out))
+	}
+	env := fileNamed(out, RuntimeModule+"."+RuntimeProcessID())["env"].(map[string]string)
+	if env[RuntimeToolModules] != "lamp="+BundlePath("lamp", "tools")+"/lamp-tools" {
+		t.Errorf("the runtime is told %q, want the binary", env[RuntimeToolModules])
+	}
+
+	// An artifact may say it explicitly; naming anything but the binary is refused.
+	said := Manifest{Module: "lamp", Version: "1", Build: &Build{Artifacts: []Artifact{{Name: "tools",
+		Kind: ArtifactBundle, Language: "go", System: "arch", Binary: "lamp", Loads: []string{"lamp"}}}}}
+	if p := said.Build.problems("lamp"); len(p) != 0 {
+		t.Errorf("loads naming the binary was refused: %v", p)
+	}
+	said.Build.Artifacts[0].Loads = []string{"tools/index.js"}
+	if p := said.Build.problems("lamp"); len(p) == 0 {
+		t.Error("a Go bundle loading a file it does not contain was admitted")
 	}
 }