--- a/rust/hg-cpython/src/debug.rs	Fri May 29 12:12:16 2020 +0200
+++ b/rust/hg-cpython/src/debug.rs	Fri May 29 12:17:59 2020 +0200
@@ -16,8 +16,6 @@
     m.add(py, "__package__", package)?;
     m.add(py, "__doc__", "Rust debugging information")?;
 
-    m.add(py, "re2_installed", cfg!(feature = "with-re2"))?;
-
     let sys = PyModule::import(py, "sys")?;
     let sys_modules: PyDict = sys.get(py, "modules")?.extract(py)?;
     sys_modules.set_item(py, dotted_name, &m)?;