Test against Python 3.12a5. (#1103)

* Omit Py3.12 on MacOS.

.github/workflows/tests.yml

@@ -28,6 +28,7 @@ jobs:
         - ["3.9",   "py39"]
         - ["3.10",  "py310"]
         - ["3.11",  "py311"]
+        - ["3.12.0-alpha.5",  "py312"]
         - ["3.9",   "docs"]
         - ["3.9",   "coverage"]
         exclude:
@@ -37,9 +38,10 @@ jobs:
           - { os: ["macos", "macos-11"], config: ["3.9",   "lint"] }
           - { os: ["macos", "macos-11"], config: ["3.9",   "docs"] }
           - { os: ["macos", "macos-11"], config: ["3.9",   "coverage"] }
-          # macOS/Python 3.11 is set up for universal2 architecture
+          # macOS/Python 3.11+ is set up for universal2 architecture
           # which causes build and package selection issues.
           - { os: ["macos", "macos-11"], config: ["3.11",  "py311"] }
+          - { os: ["macos", "macos-11"], config: ["3.12.0-alpha.5",  "py312"] }
 
     runs-on: ${{ matrix.os[1] }}
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name

.meta.toml

@@ -2,15 +2,15 @@
 # https://github.com/zopefoundation/meta/tree/master/config/zope-product
 [meta]
 template = "zope-product"
-commit-id = "b2749126"
+commit-id = "c7a64084"
 
 [python]
 with-pypy = false
 with-docs = true
 with-sphinx-doctests = false
 with-windows = true
 with-macos = true
-with-future-python = false
+with-future-python = true
 
 [coverage]
 fail-under = 80

buildout.cfg

@@ -16,6 +16,8 @@ parts =
     requirements
 sources-dir = develop
 auto-checkout =
+    RestrictedPython
+    AccessControl
 
 [testenv]
 PYTHONHASHSEED = random

tox.ini

@@ -9,6 +9,7 @@ envlist =
     py39
     py310
     py311
+    py312
     docs
     coverage
     pre-commit
@@ -87,6 +88,7 @@ commands =
 basepython = python3.8
 skip_install = true
 allowlist_externals =
+    {[testenv]allowlist_externals}
     mkdir
 deps =
     {[testenv]deps}