diff -r 7b860fa1140f -r 6b998ce1b8cb src/Pure/Admin/build_vampire.scala --- a/src/Pure/Admin/build_vampire.scala Wed Sep 15 16:11:53 2021 +0200 +++ b/src/Pure/Admin/build_vampire.scala Wed Sep 15 16:13:25 2021 +0200 @@ -95,8 +95,6 @@ ISABELLE_VAMPIRE="$VAMPIRE_HOME/vampire" ISABELLE_VAMPIRE_POLYMORPHIC="$VAMPIRE_HOME/vampire_polymorphic" - -VAMPIRE_EXTRA_OPTIONS="" """)