tree schema REFACTOR move ext definitions to plugins_exts header
diff --git a/src/printer_lyb.c b/src/printer_lyb.c
index cf373f9..f1583ee 100644
--- a/src/printer_lyb.c
+++ b/src/printer_lyb.c
@@ -27,6 +27,7 @@
 #include "log.h"
 #include "out.h"
 #include "out_internal.h"
+#include "plugins_exts/metadata.h"
 #include "printer_data.h"
 #include "printer_internal.h"
 #include "set.h"