diff -r 16135603d9c7 -r ff6c1a82270f src/Pure/Tools/build.scala
--- a/src/Pure/Tools/build.scala	Sat Aug 06 23:13:35 2022 +0200
+++ b/src/Pure/Tools/build.scala	Sun Aug 07 12:22:43 2022 +0200
@@ -494,9 +494,9 @@
           Presentation.update_chapter(presentation_dir, chapter, entries)
         }
 
-        using(Export.open_context(store)) { export_context =>
+        using(Export.open_database_context(store)) { database_context =>
           val presentation_nodes =
-            Presentation.Nodes.read(export_context, deps, presentation_sessions.map(_.name))
+            Presentation.Nodes.read(database_context, deps, presentation_sessions.map(_.name))
 
           Par_List.map({ (session: String) =>
             progress.expose_interrupt()
@@ -510,7 +510,7 @@
                   deps.sessions_structure(deps(session).theory_qualifier(name))
               }
 
-            using(export_context.open_session(deps.base_info(session))) { session_context =>
+            using(database_context.open_session(deps.base_info(session))) { session_context =>
               Presentation.session_html(session_context, deps,
                 progress = progress,
                 verbose = verbose,