From 457420e3d091214d23c516f43a92fed3f1faefec Mon Sep 17 00:00:00 2001
From: Waket Zheng <waketzheng@gmail.com>
Date: Sun, 5 Jul 2026 21:01:52 +0800
Subject: [PATCH 1/2] Prefer to use standard typing Self

---
 asyncssh/agent.py      | 5 ++++-
 asyncssh/connection.py | 5 ++++-
 asyncssh/forward.py    | 6 +++++-
 asyncssh/listener.py   | 6 +++++-
 asyncssh/process.py    | 6 +++++-
 asyncssh/scp.py        | 5 ++++-
 asyncssh/sftp.py       | 5 ++++-
 7 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/asyncssh/agent.py b/asyncssh/agent.py
index d44a7e00..a71b1094 100644
--- a/asyncssh/agent.py
+++ b/asyncssh/agent.py
@@ -25,7 +25,10 @@
 import sys
 from types import TracebackType
 from typing import TYPE_CHECKING, List, Optional, Sequence, Tuple, Type, Union
-from typing_extensions import Protocol, Self
+if sys.version_info >= (3, 11):
+    from typing import Protocol, Self
+else:
+    from typing_extensions import Protocol, Self
 
 from .listener import SSHForwardListener
 from .misc import async_context_manager, maybe_wait_closed
diff --git a/asyncssh/connection.py b/asyncssh/connection.py
index 93427c42..730f426d 100644
--- a/asyncssh/connection.py
+++ b/asyncssh/connection.py
@@ -40,7 +40,10 @@
 from typing import TYPE_CHECKING, Any, AnyStr, Awaitable, Callable, Dict
 from typing import Generic, List, Mapping, Optional, Sequence, Set, Tuple
 from typing import Type, TypeVar, Union, cast
-from typing_extensions import Protocol, Self
+if sys.version_info >= (3, 11):
+    from typing import Protocol, Self
+else:
+    from typing_extensions import Protocol, Self
 
 from .agent import SSHAgentClient, SSHAgentListener
 
diff --git a/asyncssh/forward.py b/asyncssh/forward.py
index 8470c000..b691d05b 100644
--- a/asyncssh/forward.py
+++ b/asyncssh/forward.py
@@ -22,10 +22,14 @@
 
 import asyncio
 import socket
+import sys
 from types import TracebackType
 from typing import TYPE_CHECKING, Any, Awaitable, Callable, Dict, Optional
 from typing import Type, cast
-from typing_extensions import Self
+if sys.version_info >= (3, 11):
+    from typing import Self
+else:
+    from typing_extensions import Self
 
 from .misc import ChannelOpenError, SockAddr
 
diff --git a/asyncssh/listener.py b/asyncssh/listener.py
index e9cc475b..97e03fec 100644
--- a/asyncssh/listener.py
+++ b/asyncssh/listener.py
@@ -23,10 +23,14 @@
 import asyncio
 import errno
 import socket
+import sys
 from types import TracebackType
 from typing import TYPE_CHECKING, AnyStr, Callable, Generic, List, Optional
 from typing import Sequence, Set, Tuple, Type, Union
-from typing_extensions import Self
+if sys.version_info >= (3, 11):
+    from typing import Self
+else:
+    from typing_extensions import Self
 
 from .forward import SSHForwarderCoro
 from .forward import SSHLocalPortForwarder, SSHLocalPathForwarder
diff --git a/asyncssh/process.py b/asyncssh/process.py
index 5e109989..23131452 100644
--- a/asyncssh/process.py
+++ b/asyncssh/process.py
@@ -29,11 +29,15 @@
 from pathlib import PurePath
 import socket
 import stat
+import sys
 from types import TracebackType
 from typing import Any, AnyStr, Awaitable, Callable, Dict, Generic, IO
 from typing import Iterable, List, Mapping, Optional, Set, TextIO
 from typing import Tuple, Type, TypeVar, Union, cast
-from typing_extensions import Protocol, Self
+if sys.version_info >= (3, 11):
+    from typing import Protocol, Self
+else:
+    from typing_extensions import Protocol, Self
 
 from .channel import SSHChannel, SSHClientChannel, SSHServerChannel
 
diff --git a/asyncssh/scp.py b/asyncssh/scp.py
index f3b69c74..5dafe820 100644
--- a/asyncssh/scp.py
+++ b/asyncssh/scp.py
@@ -33,7 +33,10 @@
 from types import TracebackType
 from typing import TYPE_CHECKING, AsyncIterator, List, NoReturn, Optional
 from typing import Sequence, Tuple, Type, Union, cast
-from typing_extensions import Protocol, Self
+if sys.version_info >= (3, 11):
+    from typing import Protocol, Self
+else:
+    from typing_extensions import Protocol, Self
 
 from .constants import DEFAULT_LANG
 from .constants import FILEXFER_TYPE_REGULAR, FILEXFER_TYPE_DIRECTORY
diff --git a/asyncssh/sftp.py b/asyncssh/sftp.py
index 75d8df7a..7a7abc39 100644
--- a/asyncssh/sftp.py
+++ b/asyncssh/sftp.py
@@ -37,7 +37,10 @@
 from typing import TYPE_CHECKING, AnyStr, AsyncIterator, Awaitable, Callable
 from typing import Dict, Generic, IO, Iterable, List, Mapping, Optional
 from typing import Sequence, Set, Tuple, Type, TypeVar, Union, cast, overload
-from typing_extensions import Literal, Protocol, Self
+if sys.version_info >= (3, 11):
+    from typing import Literal, Protocol, Self
+else:
+    from typing_extensions import Literal, Protocol, Self
 
 from . import constants
 from .constants import DEFAULT_LANG

From e8fce2b6648871f70f8f6f129bf1a05d45363c89 Mon Sep 17 00:00:00 2001
From: Waket Zheng <waketzheng@gmail.com>
Date: Mon, 6 Jul 2026 13:58:56 +0800
Subject: [PATCH 2/2] feat: only install typing-extensions for `python<3.11`

---
 asyncssh/agent.py      | 7 ++++---
 asyncssh/connection.py | 8 ++++----
 asyncssh/kex_dh.py     | 4 ++--
 asyncssh/misc.py       | 6 +++---
 asyncssh/process.py    | 6 +++---
 asyncssh/public_key.py | 5 ++---
 asyncssh/saslprep.py   | 3 +--
 asyncssh/scp.py        | 6 +++---
 asyncssh/sftp.py       | 9 +++++----
 pyproject.toml         | 2 +-
 10 files changed, 28 insertions(+), 28 deletions(-)

diff --git a/asyncssh/agent.py b/asyncssh/agent.py
index a71b1094..df65912e 100644
--- a/asyncssh/agent.py
+++ b/asyncssh/agent.py
@@ -24,11 +24,12 @@
 import os
 import sys
 from types import TracebackType
-from typing import TYPE_CHECKING, List, Optional, Sequence, Tuple, Type, Union
+from typing import TYPE_CHECKING, List, Optional, Protocol, Sequence, Tuple
+from typing import Type, Union
 if sys.version_info >= (3, 11):
-    from typing import Protocol, Self
+    from typing import Self
 else:
-    from typing_extensions import Protocol, Self
+    from typing_extensions import Self
 
 from .listener import SSHForwardListener
 from .misc import async_context_manager, maybe_wait_closed
diff --git a/asyncssh/connection.py b/asyncssh/connection.py
index 730f426d..477e69ab 100644
--- a/asyncssh/connection.py
+++ b/asyncssh/connection.py
@@ -38,12 +38,12 @@
 from pathlib import Path
 from types import TracebackType
 from typing import TYPE_CHECKING, Any, AnyStr, Awaitable, Callable, Dict
-from typing import Generic, List, Mapping, Optional, Sequence, Set, Tuple
-from typing import Type, TypeVar, Union, cast
+from typing import Generic, List, Mapping, Optional, Protocol, Sequence, Set
+from typing import Tuple, Type, TypeVar, Union, cast
 if sys.version_info >= (3, 11):
-    from typing import Protocol, Self
+    from typing import Self
 else:
-    from typing_extensions import Protocol, Self
+    from typing_extensions import Self
 
 from .agent import SSHAgentClient, SSHAgentListener
 
diff --git a/asyncssh/kex_dh.py b/asyncssh/kex_dh.py
index ab0dc87f..25a09206 100644
--- a/asyncssh/kex_dh.py
+++ b/asyncssh/kex_dh.py
@@ -21,8 +21,8 @@
 """SSH Diffie-Hellman, ECDH, and Edwards DH key exchange handlers"""
 
 from hashlib import sha1, sha224, sha256, sha384, sha512
-from typing import TYPE_CHECKING, Callable, Mapping, Optional, Type, cast
-from typing_extensions import Protocol
+from typing import TYPE_CHECKING, Callable, Mapping, Optional, Protocol, Type
+from typing import cast
 
 from .constants import DEFAULT_LANG
 from .crypto import Curve25519DH, Curve448DH, DH, ECDH, PQClass, MLKEM, SNTRUP
diff --git a/asyncssh/misc.py b/asyncssh/misc.py
index e9f0d183..47badb9d 100644
--- a/asyncssh/misc.py
+++ b/asyncssh/misc.py
@@ -37,9 +37,9 @@
 from random import SystemRandom
 from types import TracebackType
 from typing import Any, AsyncContextManager, Awaitable, Callable, Dict
-from typing import Generator, Generic, IO, Iterator, List, Mapping, Optional
-from typing import Sequence, Tuple, Type, TypeVar, Union, cast, overload
-from typing_extensions import Literal, Protocol
+from typing import Generator, Generic, IO, Iterator, List, Literal, Mapping
+from typing import Optional, Protocol, Sequence, Tuple, Type, TypeVar, Union
+from typing import cast, overload
 
 from .constants import DEFAULT_LANG
 from .constants import DISC_COMPRESSION_ERROR, DISC_CONNECTION_LOST
diff --git a/asyncssh/process.py b/asyncssh/process.py
index 23131452..c31c1ce8 100644
--- a/asyncssh/process.py
+++ b/asyncssh/process.py
@@ -32,12 +32,12 @@
 import sys
 from types import TracebackType
 from typing import Any, AnyStr, Awaitable, Callable, Dict, Generic, IO
-from typing import Iterable, List, Mapping, Optional, Set, TextIO
+from typing import Iterable, List, Mapping, Optional, Protocol, Set, TextIO
 from typing import Tuple, Type, TypeVar, Union, cast
 if sys.version_info >= (3, 11):
-    from typing import Protocol, Self
+    from typing import Self
 else:
-    from typing_extensions import Protocol, Self
+    from typing_extensions import Self
 
 from .channel import SSHChannel, SSHClientChannel, SSHServerChannel
 
diff --git a/asyncssh/public_key.py b/asyncssh/public_key.py
index b4664983..5e8637c6 100644
--- a/asyncssh/public_key.py
+++ b/asyncssh/public_key.py
@@ -29,9 +29,8 @@
 
 from hashlib import md5, sha1, sha256, sha384, sha512
 from pathlib import Path, PurePath
-from typing import Callable, Dict, List, Mapping, Optional, Sequence, Set
-from typing import Tuple, Type, Union, cast
-from typing_extensions import Protocol
+from typing import Callable, Dict, List, Mapping, Optional, Protocol
+from typing import Sequence, Set, Tuple, Type, Union, cast
 
 from .crypto import ed25519_available, ed448_available
 from .encryption import Encryption
diff --git a/asyncssh/saslprep.py b/asyncssh/saslprep.py
index 9b736617..4b2563b3 100644
--- a/asyncssh/saslprep.py
+++ b/asyncssh/saslprep.py
@@ -33,8 +33,7 @@
 # pylint: enable=deprecated-module
 import unicodedata
 
-from typing import Callable, Optional, Sequence
-from typing_extensions import Literal
+from typing import Callable, Literal, Optional, Sequence
 
 
 class SASLPrepError(ValueError):
diff --git a/asyncssh/scp.py b/asyncssh/scp.py
index 5dafe820..3ecafbd5 100644
--- a/asyncssh/scp.py
+++ b/asyncssh/scp.py
@@ -32,11 +32,11 @@
 import sys
 from types import TracebackType
 from typing import TYPE_CHECKING, AsyncIterator, List, NoReturn, Optional
-from typing import Sequence, Tuple, Type, Union, cast
+from typing import Protocol, Sequence, Tuple, Type, Union, cast
 if sys.version_info >= (3, 11):
-    from typing import Protocol, Self
+    from typing import Self
 else:
-    from typing_extensions import Protocol, Self
+    from typing_extensions import Self
 
 from .constants import DEFAULT_LANG
 from .constants import FILEXFER_TYPE_REGULAR, FILEXFER_TYPE_DIRECTORY
diff --git a/asyncssh/sftp.py b/asyncssh/sftp.py
index 7a7abc39..e496f9ef 100644
--- a/asyncssh/sftp.py
+++ b/asyncssh/sftp.py
@@ -35,12 +35,13 @@
 import time
 from types import TracebackType
 from typing import TYPE_CHECKING, AnyStr, AsyncIterator, Awaitable, Callable
-from typing import Dict, Generic, IO, Iterable, List, Mapping, Optional
-from typing import Sequence, Set, Tuple, Type, TypeVar, Union, cast, overload
+from typing import Dict, Generic, IO, Iterable, List, Literal, Mapping
+from typing import Optional, Protocol, Sequence, Set, Tuple, Type, TypeVar
+from typing import Union, cast, overload
 if sys.version_info >= (3, 11):
-    from typing import Literal, Protocol, Self
+    from typing import Self
 else:
-    from typing_extensions import Literal, Protocol, Self
+    from typing_extensions import Self
 
 from . import constants
 from .constants import DEFAULT_LANG
diff --git a/pyproject.toml b/pyproject.toml
index dd2f82b8..7adcdd01 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ classifiers = [
 requires-python = '>= 3.10'
 dependencies    = [
     'cryptography >= 48.0.1',
-    'typing_extensions >= 4.0.0',
+    "typing-extensions (>= 4.0.0); python_version < '3.11'",
 ]
 dynamic = ['version']