diff --git a/src/runtime2/mod.rs b/src/runtime2/mod.rs
index 05881c7b85be8a3fd71f8e4d892c8d6c395064db..50fd6dc2813384d890c9d4fe875f745b6d872f48 100644
--- a/src/runtime2/mod.rs
+++ b/src/runtime2/mod.rs
@@ -1,8 +1,18 @@
+#[macro_use] mod error;
 mod store;
 mod runtime;
 mod component;
 mod communication;
 mod scheduler;
+mod poll;
+mod stdlib;
 #[cfg(test)] mod tests;
 
-pub use runtime::Runtime;
\ No newline at end of file
+pub use runtime::Runtime;
+pub(crate) use error::RtError;
+pub(crate) use scheduler::SchedulerCtx;
+pub(crate) use communication::{
+    PortId, PortKind, PortState,
+    Message, ControlMessage, SyncMessage, DataMessage,
+    SyncRoundDecision
+};
\ No newline at end of file