Build from the selected module

internal/artifact/artifact.go

@@ -13,11 +13,28 @@ type Target struct {
 	Arch string
 }
 
+// Settings contains normalized inputs shared by build execution and evidence.
+type Settings struct {
+	MainPackage string
+	BinaryName  string
+	Targets     []Target
+}
+
 type Declaration struct {
 	Target   Target
 	Filename string
 }
 
+// NormalizeSettings copies build inputs and removes duplicate targets while
+// preserving their first occurrence.
+func NormalizeSettings(mainPackage, binaryName string, targets []Target) Settings {
+	return Settings{
+		MainPackage: mainPackage,
+		BinaryName:  binaryName,
+		Targets:     NormalizeTargets(targets),
+	}
+}
+
 // NormalizeTargets removes duplicate targets while preserving their first
 // occurrence.
 func NormalizeTargets(targets []Target) []Target {

internal/artifact/artifact_test.go

@@ -17,6 +17,22 @@ func TestNormalizeTargetsPreservesOrderAndFirstOccurrence(t *testing.T) {
 	}
 }
 
+func TestNormalizeSettingsKeepsBuildInputsAndNormalizesTargets(t *testing.T) {
+	settings := NormalizeSettings("./cmd/app", "app", []Target{
+		{OS: "linux", Arch: "amd64"},
+		{OS: "windows", Arch: "arm64"},
+		{OS: "linux", Arch: "amd64"},
+	})
+	want := Settings{
+		MainPackage: "./cmd/app",
+		BinaryName:  "app",
+		Targets:     []Target{{OS: "linux", Arch: "amd64"}, {OS: "windows", Arch: "arm64"}},
+	}
+	if !reflect.DeepEqual(settings, want) {
+		t.Fatalf("NormalizeSettings() = %#v, want %#v", settings, want)
+	}
+}
+
 func TestExpectedBuildUsesSharedNamesInTargetOrder(t *testing.T) {
 	targets := []Target{{OS: "windows", Arch: "arm64"}, {OS: "linux", Arch: "amd64"}}
 	want := []Declaration{