From acae5558e01024e4f6267b40d319d0f9714edab9 Mon Sep 17 00:00:00 2001
From: mejrs <brunokolenbrander@hotmail.com>
Date: Sun, 1 May 2022 22:41:12 +0200
Subject: [PATCH] Add to changelog and migration

---
 CHANGELOG.md           | 2 ++
 guide/src/migration.md | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e368a1f6f7..50de5db8c0c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,12 +11,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - Implement `ToPyObject` for `[T; N]`. [#2313](https://github.com/PyO3/pyo3/pull/2313)
+- Added the internal `IntoPyResult` trait to give better error messages when function return types do not implement `IntoPy`. [#2326](https://github.com/PyO3/pyo3/pull/2326)
 
 ### Changed
 
 - Move `PyTypeObject::type_object` method to `PyTypeInfo` trait, and deprecate `PyTypeObject` trait. [#2287](https://github.com/PyO3/pyo3/pull/2287)
 - The deprecated `pyproto` feature is now disabled by default. [#2322](https://github.com/PyO3/pyo3/pull/2322)
 - Deprecate `ToBorrowedObject` trait (it is only used as a wrapper for `ToPyObject`). [#2333](https://github.com/PyO3/pyo3/pull/2333)
+- `impl<T, const N: usize> IntoPy<PyObject> for [T; N]` now requires `T: IntoPy` rather than `T: ToPyObject`. [#2326](https://github.com/PyO3/pyo3/pull/2326)
 
 ## [0.16.4] - 2022-04-14
 
diff --git a/guide/src/migration.md b/guide/src/migration.md
index 3aa50f7f218..66172fd1640 100644
--- a/guide/src/migration.md
+++ b/guide/src/migration.md
@@ -40,6 +40,10 @@ fn get_type_object<T: PyTypeInfo>(py: Python<'_>) -> &PyType {
 # Python::with_gil(|py| { get_type_object::<pyo3::types::PyList>(py); });
 ```
 
+### `impl<T, const N: usize> IntoPy<PyObject> for [T; N]` now requires `T: IntoPy` rather than `T: ToPyObject`
+
+If this leads to errors, simply implement `IntoPy`. Because pyclasses already implement `IntoPy`, you probably don't need to worry about this.
+
 ## from 0.15.* to 0.16
 
 ### Drop support for older technologies