Prep removal of importlib.resources.open_text.

src/pip/_internal/commands/debug.py

@@ -1,4 +1,3 @@
-import importlib.resources
 import locale
 import logging
 import os
@@ -17,6 +16,7 @@
 from pip._internal.cli.status_codes import SUCCESS
 from pip._internal.configuration import Configuration
 from pip._internal.metadata import get_environment
+from pip._internal.utils.compat import open_text_resource
 from pip._internal.utils.logging import indent_log
 from pip._internal.utils.misc import get_pip_version
 
@@ -35,7 +35,7 @@ def show_sys_implementation() -> None:
 
 
 def create_vendor_txt_map() -> Dict[str, str]:
-    with importlib.resources.open_text("pip._vendor", "vendor.txt") as f:
+    with open_text_resource("pip._vendor", "vendor.txt") as f:
         # Purge non version specifying lines.
         # Also, remove any space prefix or suffixes (including comments).
         lines = [

src/pip/_internal/utils/compat.py

@@ -1,9 +1,11 @@
 """Stuff that differs in different Python versions and platform
 distributions."""
 
+import importlib.resources
 import logging
 import os
 import sys
+from typing import IO
 
 __all__ = ["get_path_uid", "stdlib_pkgs", "WINDOWS"]
 
@@ -51,6 +53,20 @@ def get_path_uid(path: str) -> int:
     return file_uid
 
 
+# The importlib.resources.open_text function was deprecated in 3.11 with suggested
+# replacement we use below.
+if sys.version_info < (3, 11):
+    open_text_resource = importlib.resources.open_text
+else:
+
+    def open_text_resource(
+        package: str, resource: str, encoding: str = "utf-8", errors: str = "strict"
+    ) -> IO[str]:
+        return (importlib.resources.files(package) / resource).open(
+            "r", encoding=encoding, errors=errors
+        )
+
+
 # packages in the stdlib that may have installation metadata, but should not be
 # considered 'installed'.  this theoretically could be determined based on
 # dist.location (py27:`sysconfig.get_paths()['stdlib']`,