--- a/src/Pure/System/scala.scala Sat Feb 27 16:33:16 2021 +0100
+++ b/src/Pure/System/scala.scala Sat Feb 27 17:25:54 2021 +0100
@@ -245,4 +245,5 @@
Doc.Doc_Names,
Bash.Process,
Bibtex.Check_Database,
+ Isabelle_System.Make_Directory,
Isabelle_Tool.Isabelle_Tools)