Backport patch for Python 3.11 compatibility

910.patch

@@ -0,0 +1,45 @@
+From 87efa4fe80f8d4480d14de66c871bb9d6a4e1cb5 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Tin=20Tvrtkovi=C4=87?= <tinchester@gmail.com>
+Date: Sun, 16 Jan 2022 02:37:19 +0100
+Subject: [PATCH] Fix set_closure_cell on 3.11
+
+---
+ src/attr/_compat.py | 25 ++++++++++++++++---------
+ 1 file changed, 16 insertions(+), 9 deletions(-)
+
+diff --git a/src/attr/_compat.py b/src/attr/_compat.py
+index dc0cb02b..d1f30327 100644
+--- a/src/attr/_compat.py
++++ b/src/attr/_compat.py
+@@ -211,15 +211,22 @@ def force_x_to_be_a_cell():  # pragma: no cover
+             )
+             set_first_freevar_code = types.CodeType(*args)
+ 
+-        def set_closure_cell(cell, value):
+-            # Create a function using the set_first_freevar_code,
+-            # whose first closure cell is `cell`. Calling it will
+-            # change the value of that cell.
+-            setter = types.FunctionType(
+-                set_first_freevar_code, {}, "setter", (), (cell,)
+-            )
+-            # And call it to set the cell.
+-            setter(value)
++        if sys.version_info >= (3, 11):
++
++            def set_closure_cell(cell, value):
++                cell.cell_contents = value
++
++        else:
++
++            def set_closure_cell(cell, value):
++                # Create a function using the set_first_freevar_code,
++                # whose first closure cell is `cell`. Calling it will
++                # change the value of that cell.
++                setter = types.FunctionType(
++                    set_first_freevar_code, {}, "setter", (), (cell,)
++                )
++                # And call it to set the cell.
++                setter(value)
+ 
+         # Make sure it works on this interpreter:
+         def make_func_with_cell():

python-attrs.spec

@@ -17,6 +17,8 @@ License:        MIT
 URL:            http://www.attrs.org/
 BuildArch:      noarch
 Source0:        https://github.com/hynek/%{modname}/archive/%{version}/%{modname}-%{version}.tar.gz
+# Python 3.11 compatibility
+Patch910:       https://github.com/python-attrs/attrs/pull/910.patch
 
 BuildRequires:  python%{python3_pkgversion}-devel
 BuildRequires:  python%{python3_pkgversion}-setuptools
@@ -43,6 +45,7 @@ object protocols.
 
 %prep
 %setup -q -n %{modname}-%{version}
+%patch910 -p1
 
 %build
 %py3_build