--- a/rust/hg-cpython/src/lib.rs	Thu Dec 20 22:28:39 2018 -0500
+++ b/rust/hg-cpython/src/lib.rs	Mon Dec 03 07:44:08 2018 +0100
@@ -21,8 +21,10 @@
 #[macro_use]
 extern crate cpython;
 extern crate hg;
+extern crate libc;
 
 mod ancestors;
+mod cindex;
 mod exceptions;
 
 py_module_initializer!(rustext, initrustext, PyInit_rustext, |py, m| {