Fix removed importlib.resources.read_binary in Python 3.13 (#201)

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
     strategy:
       matrix:
         os: [Windows, Ubuntu, MacOS]
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
         include:
           # Only run PyPy jobs, on Ubuntu.
           - os: Ubuntu
@@ -30,9 +30,10 @@ jobs:
       - uses: actions/checkout@v3
 
       # Get Python to test against
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
+          allow-prereleases: true
 
       # Setup pip's cache
       - name: Save date (for cache)

noxfile.py

@@ -22,7 +22,7 @@ def lint(session):
     session.run("pre-commit", "run", "--all-files", *args)
 
 
-@nox.session(python=["3.7", "3.8", "3.9", "3.10", "3.11", "pypy3"])
+@nox.session(python=["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "pypy3"])
 def test(session):
     session.install(".")
     session.install("-r", "tests/requirements.txt")
@@ -42,7 +42,7 @@ def test(session):
     )
 
 
-@nox.session(python=["3.7", "3.8", "3.9", "3.10", "3.11", "pypy3"])
+@nox.session(python=["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "pypy3"])
 def doctest(session):
     session.install(".")
     session.install("-r", "docs/requirements.txt")

src/installer/scripts.py

@@ -3,9 +3,19 @@
 import io
 import os
 import shlex
+import sys
 import zipfile
-from importlib.resources import read_binary
-from typing import TYPE_CHECKING, Mapping, Optional, Tuple
+from types import ModuleType
+from typing import TYPE_CHECKING, Mapping, Optional, Tuple, Union
+
+if sys.version_info >= (3, 9):  # pragma: no cover
+    from importlib.resources import files
+
+    def read_binary(package: Union[str, ModuleType], file_path: str) -> bytes:
+        return (files(package) / file_path).read_bytes()
+
+else:  # pragma: no cover
+    from importlib.resources import read_binary
 
 from installer import _scripts