Add preliminary support for Python 3.15b1.

.github/workflows/tests.yml

@@ -94,6 +94,7 @@ jobs:
           - "3.12"
           - "3.13"
           - "3.14"
+          - "3.15"
         os: [ubuntu-latest, macos-latest, windows-latest, windows-11-arm]
         exclude:
           - os: macos-latest
@@ -149,7 +150,13 @@ jobs:
           key: ${{ runner.os }}-${{ runner.arch }}-pip-${{ matrix.python-version }}
 
 
+      - name: Install Build Dependencies (3.15)
+        if: matrix.python-version == '3.15'
+        run: |
+          pip install -U pip
+          pip install -U "setuptools >= 78.1.1,< 82" wheel twine cffi pycparser
       - name: Install Build Dependencies
+        if: matrix.python-version != '3.15'
         run: |
           pip install -U pip
           pip install -U "setuptools >= 78.1.1,< 82" wheel twine
@@ -197,7 +204,15 @@ jobs:
         run: |
           python setup.py sdist
 
+      - name: Install persistent and dependencies (3.15)
+        if: matrix.python-version == '3.15'
+        run: |
+          # Install to collect dependencies into the (pip) cache.
+          # Use "--pre" here because dependencies with support for this future
+          # Python release may only be available as pre-releases
+          pip install --pre .[test]
       - name: Install persistent and dependencies
+        if: matrix.python-version != '3.15'
         run: |
           # Install to collect dependencies into the (pip) cache.
           pip install -U pip "setuptools >= 78.1.1,< 82"
@@ -261,6 +276,7 @@ jobs:
           - "3.12"
           - "3.13"
           - "3.14"
+          - "3.15"
         os: [ubuntu-latest, macos-latest, windows-latest, windows-11-arm]
         exclude:
           - os: macos-latest
@@ -328,7 +344,23 @@ jobs:
         with:
           name: persistent-${{ runner.os }}-${{ matrix.python-version }}-${{ runner.arch }}.whl
           path: dist/
+      - name: Install persistent ${{ matrix.python-version }}
+        if: matrix.python-version == '3.15'
+        run: |
+          pip install -U wheel "setuptools >= 78.1.1,< 82"
+          # coverage might have a wheel on PyPI for a future python version which is
+          # not ABI compatible with the current one, so build it from sdist:
+          pip install -U --no-binary :all: coverage[toml]
+          # Unzip into src/ so that testrunner can find the .so files
+          # when we ask it to load tests from that directory. This
+          # might also save some build time?
+          ls -l dist/
+          unzip -n dist/*.whl -d src
+          # Use "--pre" here because dependencies with support for this future
+          # Python release may only be available as pre-releases
+          pip install --pre -e .[test]
       - name: Install persistent
+        if: matrix.python-version != '3.15'
         run: |
           pip install -U wheel "setuptools >= 78.1.1,< 82"
           pip install -U coverage[toml]
@@ -356,7 +388,7 @@ jobs:
       - name: Submit to Coveralls
         # This is a container action, which only runs on Linux.
         if: ${{ startsWith(runner.os, 'Linux') }}
-        uses: AndreMiras/coveralls-python-action@develop
+        uses: coverallsapp/github-action@v2
         with:
           parallel: true
 
@@ -365,7 +397,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Coveralls Finished
-      uses: AndreMiras/coveralls-python-action@develop
+      uses: coverallsapp/github-action@v2
       with:
         parallel-finished: true
 
@@ -590,6 +622,9 @@ jobs:
       - name: Restore pip cache permissions
         run: sudo chown -R $(whoami) ${{ steps.pip-cache-default.outputs.dir }}
 
+      - name: Prevent publishing wheels for unreleased Python versions
+        run: VER=$(echo '3.15' | tr -d .) && ls -al wheelhouse && sudo rm -f wheelhouse/*-cp${VER}*.whl && ls -al wheelhouse
+
   publish:
     name: Publish to PyPI
     runs-on: ubuntu-latest

.manylinux-install.sh

@@ -33,6 +33,7 @@ tox_env_map() {
         *"cp312"*) echo 'py312';;
         *"cp313"*) echo 'py313';;
         *"cp314"*) echo 'py314';;
+        *"cp315"*) echo 'py315';;
         *) echo 'py';;
     esac
 }
@@ -44,9 +45,15 @@ for PYBIN in /opt/python/*/bin; do
        [[ "${PYBIN}" == *"cp311/"* ]] || \
        [[ "${PYBIN}" == *"cp312/"* ]] || \
        [[ "${PYBIN}" == *"cp313/"* ]] || \
-       [[ "${PYBIN}" == *"cp314/"* ]] ; then
-        "${PYBIN}/pip" install -e /io/
-        "${PYBIN}/pip" wheel /io/ -w wheelhouse/
+       [[ "${PYBIN}" == *"cp314/"* ]] || \
+       [[ "${PYBIN}" == *"cp315/"* ]] ; then
+        if [[ "${PYBIN}" == *"cp315/"* ]] ; then
+            "${PYBIN}/pip" install --pre -e /io/
+            "${PYBIN}/pip" wheel /io/ --pre -w wheelhouse/
+        else
+            "${PYBIN}/pip" install -e /io/
+            "${PYBIN}/pip" wheel /io/ -w wheelhouse/
+        fi
         if [ `uname -m` == 'aarch64' ]; then
           cd /io/
           ${PYBIN}/pip install tox

.meta.toml

@@ -2,12 +2,12 @@
 # https://github.com/zopefoundation/meta/tree/master/src/zope/meta/c-code
 [meta]
 template = "c-code"
-commit-id = "2c0272ea"
+commit-id = "51f0db4e"
 
 [python]
 with-windows = true
 with-pypy = true
-with-future-python = false
+with-future-python = true
 with-docs = true
 with-sphinx-doctests = true
 with-macos = false

CHANGES.rst

@@ -4,7 +4,7 @@ Change log
 6.7 (unreleased)
 ----------------
 
-- Nothing changed yet.
+- Add preliminary support for Python 3.15b1.
 
 
 6.6 (2026-05-04)

pyproject.toml

@@ -98,6 +98,7 @@ source = [
 [tool.setuptools.dynamic]
 readme = {file = ["README.rst", "CHANGES.rst"]}
 
+
 [tool.zest-releaser]
 create-wheel = false
 upload-pypi = false

src/persistent/_compat.h

@@ -29,4 +29,10 @@
 #define INT_AS_LONG(x) PyLong_AsLong(x)
 #define CAPI_CAPSULE_NAME "persistent.cPersistence.CAPI"
 
+/* PyPy only provides Py_TRASHCAN_SAFE_BEGIN/Py_TRASHCAN_SAFE_END. */
+#ifndef Py_TRASHCAN_BEGIN
+#define Py_TRASHCAN_BEGIN(op, dealloc) Py_TRASHCAN_SAFE_BEGIN(op)
+#define Py_TRASHCAN_END Py_TRASHCAN_SAFE_END(NULL)
+#endif
+
 #endif

tox.ini

@@ -10,14 +10,17 @@ envlist =
     py312,py312-pure
     py313,py313-pure
     py314,py314-pure
+    py315,py315-pure
     py314t,py314t-pure
     pypy3
     docs
     coverage
 
 [testenv]
+pip_pre = py315: true
 deps =
     setuptools >= 78.1.1,< 82
+    Sphinx
 setenv =
     pure: PURE_PYTHON=1
     !pure-!pypy3: PURE_PYTHON=0