From c2712fd102ddfb7df6df333f421c3b21c18e4b37 Mon Sep 17 00:00:00 2001
From: Hynek Schlawack <hs@ox.cx>
Date: Fri, 29 Jan 2021 11:09:02 +0100
Subject: [PATCH] Add forgotten Attribute.evolve to stub

Fixes #752
---
 changelog.d/752.change.rst | 1 +
 src/attr/__init__.pyi      | 2 ++
 tests/typing_example.py    | 4 ++++
 3 files changed, 7 insertions(+)
 create mode 100644 changelog.d/752.change.rst

diff --git a/changelog.d/752.change.rst b/changelog.d/752.change.rst
new file mode 100644
index 00000000..6e16f32a
--- /dev/null
+++ b/changelog.d/752.change.rst
@@ -0,0 +1 @@
+Added forgotten ``attr.Attribute.evolve()`` to type stubs.
diff --git a/src/attr/__init__.pyi b/src/attr/__init__.pyi
index 12af0037..eb301b43 100644
--- a/src/attr/__init__.pyi
+++ b/src/attr/__init__.pyi
@@ -83,6 +83,8 @@ class Attribute(Generic[_T]):
     kw_only: bool
     on_setattr: _OnSetAttrType
 
+    def evolve(self, **changes: Any) -> "Attribute": ...
+
 # NOTE: We had several choices for the annotation to use for type arg:
 # 1) Type[_T]
 #   - Pros: Handles simple cases correctly
diff --git a/tests/typing_example.py b/tests/typing_example.py
index 5ecf27bb..db05dec3 100644
--- a/tests/typing_example.py
+++ b/tests/typing_example.py
@@ -242,6 +242,10 @@ class NGFrozen:
 
 ngf = NGFrozen(1)
 
+attr.fields(NGFrozen).x.evolve(eq=False)
+a = attr.fields(NGFrozen).x
+a.evolve(repr=False)
+
 
 @attr.s(collect_by_mro=True)
 class MRO: