- Switch to pyproject macros.

- Add patch support-python-313.patch:
  * With Python 3.13, the listening asyncio Unix socket is removed
    on close

OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-aiosmtpd?expand=0&rev=32

support-python-313.patch

@@ -0,0 +1,26 @@
+diff --git a/aiosmtpd/tests/test_server.py b/aiosmtpd/tests/test_server.py
+index 443c0833..d2251d4a 100644
+--- a/aiosmtpd/tests/test_server.py
++++ b/aiosmtpd/tests/test_server.py
+@@ -448,10 +448,17 @@ def test_unixsocket(self, safe_socket_dir, autostop_loop, runner):
+         # Stop the task
+         cont.end()
+         catchup_delay()
+-        # Now the listener has gone away
+-        # noinspection PyTypeChecker
+-        with pytest.raises((socket.timeout, ConnectionError)):
+-            assert_smtp_socket(cont)
++        if sys.version_info < (3, 13):
++            # Now the listener has gone away
++            # noinspection PyTypeChecker
++            with pytest.raises((socket.timeout, ConnectionError)):
++                assert_smtp_socket(cont)
++        else:
++            # Starting from Python 3.13, listening asyncio Unix socket is
++            # removed on close, see:
++            # https://github.com/python/cpython/issues/111246
++            # https://github.com/python/cpython/pull/111483
++            assert not Path(cont.unix_socket).exists()
+ 
+     @pytest.mark.filterwarnings(
+         "ignore::pytest.PytestUnraisableExceptionWarning"