Use typing_extensions only when needed

Self was added in Python 3.11
TypeAlias was added in Python 3.10

beets/util/__init__.py

@@ -45,7 +45,11 @@ from typing import (
     Union,
 )
 
-from typing_extensions import TypeAlias
+try:
+    # Python 3.10+
+    from typing import TypeAlias
+except ImportError:
+    from typing_extensions import TypeAlias
 from unidecode import unidecode
 
 from beets.util import hidden

beetsplug/aura.py

@@ -29,7 +29,12 @@ from flask import (
     request,
     send_file,
 )
-from typing_extensions import Self
+
+try:
+    # Python 3.11+
+    from typing import Self
+except ImportError:
+    from typing_extensions import Self
 
 from beets import config
 from beets.dbcore.query import (

docs/changelog.rst

@@ -15,6 +15,7 @@ For packagers:
 
 * The minimum supported Python version is now 3.8.
 * The `beet` script has been removed from the repository.
+* The `typing_extensions` is required for Python 3.10 and below.
 
 Other changes:
 

pyproject.toml

@@ -41,7 +41,7 @@ mediafile = ">=0.12.0"
 munkres = ">=1.0.0"
 musicbrainzngs = ">=0.4"
 pyyaml = "*"
-typing_extensions = "*"
+typing_extensions = { version = "*", python = "<=3.10" }
 unidecode = ">=1.3.6"
 beautifulsoup4 = { version = "*", optional = true }
 dbus-python = { version = "*", optional = true }