diff -r a213dd3c0b29 -r b525f783b784 src/Pure/Admin/component_e.scala
--- a/src/Pure/Admin/component_e.scala	Thu Mar 28 11:29:25 2024 +0100
+++ b/src/Pure/Admin/component_e.scala	Thu Mar 28 11:35:39 2024 +0100
@@ -26,10 +26,7 @@
       val component_dir =
         Components.Directory(target_dir + Path.basic(component_name)).create(progress = progress)
 
-      val platform_name =
-        proper_string(Isabelle_System.getenv("ISABELLE_APPLE_PLATFORM64")) orElse
-        proper_string(Isabelle_System.getenv("ISABELLE_PLATFORM64")) getOrElse error("Bad platform")
-
+      val platform_name = Isabelle_Platform.self.ISABELLE_PLATFORM(apple = true)
       val platform_dir =
         Isabelle_System.make_directory(component_dir.path + Path.basic(platform_name))