feat: add support for macOS Golden Gate (27.x)

internal/diskutil/diskutil.go

@@ -105,6 +105,8 @@ func ForProduct(p *system.Product) (DiskUtil, error) {
 		return newSequoia(p.Version)
 	case system.Tahoe:
 		return newTahoe(p.Version)
+	case system.GoldenGate:
+		return newGoldenGate(p.Version)
 	default:
 		return nil, errors.New("unknown release")
 	}
@@ -190,6 +192,16 @@ func newTahoe(version semver.Version) (*diskutilSonoma, error) {
 	return du, nil
 }
 
+// newGoldenGate configures the DiskUtil for the specified Golden Gate version.
+func newGoldenGate(version semver.Version) (*diskutilSonoma, error) {
+	du := &diskutilSonoma{
+		embeddedDiskutil: &DiskUtilityCmd{},
+		dec:              &PlistDecoder{},
+	}
+
+	return du, nil
+}
+
 // embeddedDiskutil is a private interface used to embed UtilImpl into implementation-specific structs.
 type embeddedDiskutil interface {
 	UtilImpl

internal/system/product.go

@@ -19,6 +19,7 @@ const (
 	Sonoma
 	Sequoia
 	Tahoe
+	GoldenGate
 	CompatMode
 )
 
@@ -40,6 +41,8 @@ func (r Release) String() string {
 		return "Sequoia"
 	case Tahoe:
 		return "Tahoe"
+	case GoldenGate:
+		return "Golden Gate"
 	case CompatMode:
 		return "Compatability Mode"
 	default:
@@ -64,6 +67,8 @@ var (
 	sequoiaConstraints = mustInitConstraint(semver.NewConstraint("~15"))
 	// tahoeConstraints are the constraints used to identify Tahoe versions (26.x.x).
 	tahoeConstraints = mustInitConstraint(semver.NewConstraint("~26"))
+	// goldenGateConstraints are the constraints used to identify Golden Gate versions (27.x.x).
+	goldenGateConstraints = mustInitConstraint(semver.NewConstraint("~27"))
 	// compatModeConstraints are the constraints used to identify macOS Big Sur and later. This version is returned
 	// when the system is in compat mode (SYSTEM_VERSION_COMPAT=1).
 	compatModeConstraints = mustInitConstraint(semver.NewConstraint("~10.16"))
@@ -124,6 +129,8 @@ func getVersionRelease(version semver.Version) Release {
 		return Sequoia
 	case tahoeConstraints.Check(&version):
 		return Tahoe
+	case goldenGateConstraints.Check(&version):
+		return GoldenGate
 	case compatModeConstraints.Check(&version):
 		return CompatMode
 	default: