--- a/rust/hg-cpython/src/dirstate/non_normal_entries.rs	Sat Sep 07 14:50:39 2019 +0200
+++ b/rust/hg-cpython/src/dirstate/non_normal_entries.rs	Mon Feb 24 17:57:57 2020 +0100
@@ -6,11 +6,15 @@
 // GNU General Public License version 2 or any later version.
 
 use cpython::{
-    exc::NotImplementedError, CompareOp, ObjectProtocol, PyErr, PyList,
-    PyObject, PyResult, PyString, Python, PythonObject, ToPyObject,
+    exc::NotImplementedError, CompareOp, ObjectProtocol, PyBytes, PyClone,
+    PyErr, PyList, PyObject, PyResult, PyString, Python, PythonObject,
+    ToPyObject, UnsafePyLeaked,
 };
 
 use crate::dirstate::DirstateMap;
+use hg::utils::hg_path::HgPathBuf;
+use std::cell::RefCell;
+use std::collections::hash_set;
 
 py_class!(pub class NonNormalEntries |py| {
     data dmap: DirstateMap;
@@ -34,6 +38,10 @@
     def __repr__(&self) -> PyResult<PyString> {
         self.dmap(py).non_normal_entries_display(py)
     }
+
+    def __iter__(&self) -> PyResult<NonNormalEntriesIterator> {
+        self.dmap(py).non_normal_entries_iter(py)
+    }
 });
 
 impl NonNormalEntries {
@@ -49,4 +57,20 @@
         }
         Ok(true)
     }
+
+    fn translate_key(
+        py: Python,
+        key: &HgPathBuf,
+    ) -> PyResult<Option<PyBytes>> {
+        Ok(Some(PyBytes::new(py, key.as_ref())))
+    }
 }
+
+type NonNormalEntriesIter<'a> = hash_set::Iter<'a, HgPathBuf>;
+
+py_shared_iterator!(
+    NonNormalEntriesIterator,
+    UnsafePyLeaked<NonNormalEntriesIter<'static>>,
+    NonNormalEntries::translate_key,
+    Option<PyBytes>
+);