doctor: add cups-pk-helper

core/internal/utils/dbus.go

@@ -1,6 +1,8 @@
 package utils
 
 import (
+	"slices"
+
 	"github.com/godbus/dbus/v5"
 )
 
@@ -18,3 +20,18 @@ func IsDBusServiceAvailable(busName string) bool {
 	}
 	return owned
 }
+
+func IsDBusServiceActivatable(busName string) bool {
+	conn, err := dbus.ConnectSystemBus()
+	if err != nil {
+		return false
+	}
+	defer conn.Close()
+
+	obj := conn.Object("org.freedesktop.DBus", "/org/freedesktop/DBus")
+	var activatable []string
+	if err := obj.Call("org.freedesktop.DBus.ListActivatableNames", 0).Store(&activatable); err != nil {
+		return false
+	}
+	return slices.Contains(activatable, busName)
+}