--- a/rust/hg-core/src/lib.rs	Wed Feb 20 18:33:53 2019 +0100
+++ b/rust/hg-core/src/lib.rs	Tue Feb 19 23:42:31 2019 +0100
@@ -6,6 +6,7 @@
 pub mod dagops;
 pub use ancestors::{AncestorsIterator, LazyAncestors, MissingAncestors};
 pub mod testing;  // unconditionally built, for use from integration tests
+pub mod discovery;
 
 /// Mercurial revision numbers
 ///