_stream.py: Re-create the .bstproject when resetting the workspace

buildstream/_stream.py

@@ -607,6 +607,8 @@ class Stream():
         for element in elements:
             workspace = workspaces.get_workspace(element._get_full_name())
             workspace_path = workspace.get_absolute_path()
+            workspace_locals = self._context.get_workspace_locals()
+            workspace_local = workspace_locals.get(workspace_path)
             if soft:
                 workspace.prepared = False
                 self._message(MessageType.INFO, "Reset workspace state for {} at: {}"
@@ -627,6 +629,8 @@ class Stream():
             with element.timed_activity("Staging sources to {}".format(workspace_path)):
                 element._open_workspace()
 
+            workspace_local.write()
+
             self._message(MessageType.INFO,
                           "Reset workspace for {} at: {}".format(element.name,
                                                                  workspace_path))