Build Python 3.14 wheels

Author: arcondello

.circleci/config.yml

@@ -9,19 +9,14 @@ commands:
     parameters:
       cibw-version:
         type: string
-        default: 2.23.2
+        default: 3.1.2
     steps:
       - run:
           name: run cibuildwheel
           shell: bash -eo pipefail
           command: |
-            if [[ $OS == Windows_NT ]]; then
-              python -m pip install --user cibuildwheel==<< parameters.cibw-version >>
-              python -m cibuildwheel --output-dir dist
-            else
-              python3 -m pip install --user cibuildwheel==<< parameters.cibw-version >>
-              python3 -m cibuildwheel --output-dir dist
-            fi
+            python -m pip install --user cibuildwheel==<< parameters.cibw-version >>
+            python -m cibuildwheel --output-dir dist
 
       - store_artifacts: &store-artifacts
           path: ./dist
@@ -39,7 +34,7 @@ jobs:
         type: string
 
     docker:
-      - image: cimg/python:3.9
+      - image: cimg/python:3.13  # just need a version that can install cibuildwheel
 
     environment:
       <<: *global-environment
@@ -72,7 +67,7 @@ jobs:
 
   python-linux-debug:
     docker:
-      - image: cimg/python:3.9
+      - image: cimg/python:3.10
 
     steps:
       - checkout
@@ -111,7 +106,7 @@ jobs:
 
   python-macOS:
     macos:
-      xcode: 16.1.0
+      xcode: 16.4.0  # latest as of August 2025
     resource_class: macos.m1.medium.gen1
 
     parameters:
@@ -149,7 +144,7 @@ jobs:
 
   python-sdist:
     docker:
-      - image: cimg/python:3.9
+      - image: cimg/python:3.10
 
     steps:
       - checkout
@@ -324,7 +319,7 @@ jobs:
 
   deploy:
     docker:
-      - image: cimg/python:3.9
+      - image: cimg/python:3.10
 
     steps:
       - attach_workspace:
@@ -348,7 +343,7 @@ workflows:
           matrix:
             parameters:
               # versions are built with ~= so the patch version doesn't matter
-              python-version: &python-versions [3.9.0, 3.10.0, 3.11.0, 3.12.0, 3.13.0]
+              python-version: &python-versions [3.9.0, 3.10.0, 3.11.0, 3.12.0, 3.13.0, 3.14.0]
           filters: &tags
             # also run on tags so the deploy pipeline works
             tags:
@@ -377,7 +372,7 @@ workflows:
             - python-linux
       - python-dependencies:
           name: python-dependencies-latest
-          python-version: "3.12"  # should be updated to 3.13 once there is a non-rc image
+          python-version: "3.13"  # should be updated to 3.14 once there is a non-rc image
           dependency-versions: numpy
           only-binary: numpy
           requires:

meson.build

@@ -72,19 +72,6 @@ else
     )
 endif
 
-# Cython allows the creation of a "shared" file for some of their datastructures
-# See https://cython.readthedocs.io/en/latest/src/userguide/source_files_and_compilation.html#shared-module
-py.extension_module(
-    '_cyutility',
-    custom_target(
-        output: '_cyutility.c',
-        command: [meson.get_compiler('cython').cmd_array()[0], '--generate-shared', '@OUTPUT0@'],
-    ),
-    install: true,
-    install_rpath: '$ORIGIN',
-    subdir: 'dwave/optimization/',
-)
-
 py.extension_module(
     '_model',
     'dwave/optimization/_model.pyx',
@@ -93,7 +80,7 @@ py.extension_module(
     install: true,
     install_rpath: '$ORIGIN',
     override_options : ['cython_language=cpp'],
-    cython_args : ['--shared=dwave.optimization._cyutility'],
+    cython_args : ['-Xfreethreading_compatible=True'],
     subdir: 'dwave/optimization/',
 )
 
@@ -105,7 +92,7 @@ py.extension_module(
     install: true,
     install_rpath: '$ORIGIN',
     override_options : ['cython_language=cpp'],
-    cython_args : ['--shared=dwave.optimization._cyutility'],
+    cython_args : ['-Xfreethreading_compatible=True'],
     subdir: 'dwave/optimization/',
 )
 
@@ -117,7 +104,7 @@ py.extension_module(
     install: true,
     install_rpath: '$ORIGIN',
     override_options : ['cython_language=cpp'],
-    cython_args : ['--shared=dwave.optimization._cyutility'],
+    cython_args : ['-Xfreethreading_compatible=True'],
     subdir: 'dwave/optimization/',
 )
 
@@ -128,7 +115,7 @@ py.extension_module(
     install: true,
     install_rpath: '$ORIGIN',
     override_options : ['cython_language=cpp'],
-#    cython_args : ['--shared=dwave.optimization._cyutility'],  # throws compiler warnings as of May 2025
+    cython_args : ['-Xfreethreading_compatible=True'],
     subdir: 'dwave/optimization/',
 )
 

pyproject.toml

@@ -26,6 +26,7 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Programming Language :: Python :: 3 :: Only",
     'Programming Language :: Python :: Implementation :: CPython',
 ]

releasenotes/notes/python3.14-c03e433057763d49.yaml

@@ -0,0 +1,3 @@
+---
+features:
+  - Add support for Python 3.14.

requirements.txt

@@ -1,6 +1,7 @@
 # Install requirements
 numpy==1.21.6; python_version < '3.10'  # support numpy.typing
-numpy==2.1.0; python_version >= '3.10'
+numpy==2.1.0; python_version >= '3.10' and python_version < '3.14'
+numpy==2.3.2; python_version >= '3.14'  # first that supports 3.14
 
 # Build requirements
 cython~=3.1.0

tests/requirements.txt

@@ -1 +1 @@
-dimod==0.12.17
+dimod==0.12.17; python_version < '3.14'