A want names the release whose Approve answered its build's record ask, and a have waiting for a yes says whether the move changes the build alone (ADR 0601 §1)

go/delivery/assigner.go

@@ -193,6 +193,10 @@ type Want struct {
 	// of policy record that the node agent judged to recreate a container or move its data is applied only when its
 	// want names the composition so allowed. Empty when none was asked.
 	Yes string `json:"yes,omitempty"`
+	// Release names the release whose Approve answered the record ask of this want's build (novox/hq ADR 0601 §1): the
+	// group of pull requests mesh-delivery's gate merged on that Approve. Set with the yes it gave; empty when a person's
+	// answer to a record ask gave it, or none was needed.
+	Release string `json:"release,omitempty"`
 	// Self says the node composes this module itself (ADR 0547 §2): the want names the build alone, and no composition.
 	// A want that is not Self names the one composition it allows (ADR 0539 clause 1), as before.
 	Self bool `json:"self,omitempty"`
@@ -200,7 +204,7 @@ type Want struct {
 
 func (w Want) check() error {
 	if w.Removed {
-		if w.FP != "" || w.Composed != "" || w.Newest != "" || w.Rule != 0 || w.Backup != "" || w.Put || w.Hold || w.Self || w.Yes != "" {
+		if w.FP != "" || w.Composed != "" || w.Newest != "" || w.Rule != 0 || w.Backup != "" || w.Put || w.Hold || w.Self || w.Yes != "" || w.Release != "" {
 			return fmt.Errorf("delivery: a removed want names no fingerprint, composition, rule, backup answer or put")
 		}
 		return nil

go/delivery/delivery.go

@@ -351,6 +351,11 @@ type Have struct {
 	// composition that waits for a person's yes (ADR 0547 §3); empty otherwise.
 	Judgement Judgement `json:"judgement,omitempty"`
 	Waits     string    `json:"waits,omitempty"`
+	// BuildAlone says, in phase waiting-yes, that the move changes the module's build alone (novox/hq ADR 0601 §1): the
+	// node composed the build it runs again with today's settings and secrets and got the composition it runs, so the
+	// release that carries the new build answers the yes. False when a setting or a secret changed too, or the node could
+	// not tell: the move is then asked of a person as before.
+	BuildAlone bool `json:"build-alone,omitempty"`
 	// Sealed is, for a module the node composes itself, each value its running composition carries sealed to the node's
 	// key (a secret, a credential, a vault box), as applied (ADR 0547 §3, issue 1126): what the node's composer reuses
 	// after a restart while it opens to the vault's value, so a value sealed again moves no composition. Openable by the
@@ -476,8 +481,8 @@ func decode(data []byte, into any) error {
 func (h Have) check() error {
 	switch h.Phase {
 	case PhaseBackingUp, PhaseApplying, PhaseChecking, PhaseRunning, PhaseFailed, PhaseRemoved, PhaseHeld:
-		if h.Judgement != "" || h.Waits != "" {
-			return fmt.Errorf("delivery: only a have waiting for a yes names a judgement and the composition waiting")
+		if h.Judgement != "" || h.Waits != "" || h.BuildAlone {
+			return fmt.Errorf("delivery: only a have waiting for a yes names a judgement, the composition waiting and whether it changes the build alone")
 		}
 	case PhaseWaitingYes:
 		if h.Judgement != JudgedRecreates && h.Judgement != JudgedMovesData && h.Judgement != JudgedCannot {

go/delivery/delivery_test.go

@@ -380,10 +380,19 @@ func testPhaseHealthRefused(t *testing.T) {
 	} else if back, err := DecodeHave(raw); err != nil || back.Judgement != JudgedRecreates || back.Waits != waits.Waits {
 		t.Errorf("a have waiting for a yes came back %+v, %v", back, err)
 	}
+	// ADR 0601 §1: and whether the move changes the build alone, read back as said.
+	alone := waits
+	alone.BuildAlone = true
+	if raw, err := EncodeHave(alone); err != nil {
+		t.Errorf("a have waiting for a yes to its build alone: %v", err)
+	} else if back, err := DecodeHave(raw); err != nil || !back.BuildAlone {
+		t.Errorf("a have waiting for a yes to its build alone came back %+v, %v", back, err)
+	}
 	for name, h := range map[string]Have{
-		"neither judged":    {Phase: PhaseWaitingYes, Health: HealthOK, Judgement: JudgedNeither, Waits: waits.Waits},
-		"no waiting digest": {Phase: PhaseWaitingYes, Health: HealthOK, Judgement: JudgedMovesData},
-		"running judged":    {Phase: PhaseRunning, Health: HealthOK, Judgement: JudgedRecreates},
+		"running build alone": {Phase: PhaseRunning, Health: HealthOK, BuildAlone: true},
+		"neither judged":      {Phase: PhaseWaitingYes, Health: HealthOK, Judgement: JudgedNeither, Waits: waits.Waits},
+		"no waiting digest":   {Phase: PhaseWaitingYes, Health: HealthOK, Judgement: JudgedMovesData},
+		"running judged":      {Phase: PhaseRunning, Health: HealthOK, Judgement: JudgedRecreates},
 	} {
 		if _, err := EncodeHave(h); err == nil {
 			t.Errorf("%s: encoded", name)

go/delivery/want_composed_test.go

@@ -24,6 +24,8 @@ func TestAWantNamesItsComposition(t *testing.T) {
 		// ADR 0547 §2, §3 (issue 1126): from the second milestone a want names the build alone, and the yes a person gave.
 		{FP: fp2of('a'), Self: true},
 		{FP: fp2of('a'), Self: true, Yes: hashOf('3')},
+		// ADR 0601 §1: the yes the release's Approve gave names the release.
+		{FP: fp2of('a'), Self: true, Yes: hashOf('3'), Release: "feat/l3b-bus"},
 	} {
 		raw, err := EncodeWant(w)
 		if err != nil {
@@ -43,6 +45,7 @@ func TestAWantNamesItsComposition(t *testing.T) {
 		{Want{FP: fp2of('a'), Self: true, Composed: hashOf('1')}, "names a composition"},
 		{Want{FP: fp2of('a'), Self: true, Yes: "sha256:12"}, "a want's yes allows"},
 		{Want{Removed: true, Self: true}, "removed want names no"},
+		{Want{Removed: true, Release: "feat/l3b-bus"}, "removed want names no"},
 		{Want{FP: fp2of('a'), Composed: "sha256:12"}, "not sha256"},
 		{Want{Removed: true, Composed: hashOf('1')}, "removed want names no"},
 		{Want{FP: fp2of('a'), Composed: hashOf('1'), Backup: "later"}, `backup answer "later"`},