Make: Enable free-threading CIBW builds

Author: ashvardanian

.github/workflows/prerelease.yml

@@ -225,6 +225,7 @@ jobs:
         env:
           # Matches: `cp37-manylinux_x86_64` and `cp38-musllinux_x86_64`
           CIBW_BUILD: cp${{ matrix.python-version }}-*
+          CIBW_ENABLE: cpython-freethreading # No-GIL 3.13t builds
           CIBW_PLATFORM: linux
           CIBW_ARCHS: x86_64
 
@@ -262,6 +263,7 @@ jobs:
         env:
           # Matches: `cp37-manylinux_aarch64` and `cp38-musllinux_aarch64`
           CIBW_BUILD: cp${{ matrix.python-version }}-*
+          CIBW_ENABLE: cpython-freethreading # No-GIL 3.13t builds
           CIBW_PLATFORM: linux
           CIBW_ARCHS: aarch64
 
@@ -285,6 +287,7 @@ jobs:
           cibuildwheel --output-dir wheelhouse
         env:
           CIBW_BUILD: cp${{ matrix.python-version }}-*
+          CIBW_ENABLE: cpython-freethreading # No-GIL 3.13t builds
           CIBW_PLATFORM: macos
           CIBW_ARCHS: x86_64
 
@@ -308,6 +311,7 @@ jobs:
           cibuildwheel --output-dir wheelhouse
         env:
           CIBW_BUILD: cp${{ matrix.python-version }}-*
+          CIBW_ENABLE: cpython-freethreading # No-GIL 3.13t builds
           CIBW_PLATFORM: macos
           CIBW_ARCHS: arm64
 
@@ -350,6 +354,7 @@ jobs:
           cibuildwheel --output-dir wheelhouse
         env:
           CIBW_BUILD: cp${{ matrix.python-version }}-win_${{ matrix.architecture }}
+          CIBW_ENABLE: cpython-freethreading # No-GIL 3.13t builds
           CIBW_PLATFORM: windows
 
   build_wheels_other:
@@ -375,5 +380,6 @@ jobs:
         env:
           # https://cibuildwheel.pypa.io/en/stable/options/#archs
           CIBW_BUILD: cp${{ matrix.python-version }}-*
+          CIBW_ENABLE: cpython-freethreading # No-GIL 3.13t builds
           CIBW_PLATFORM: linux
           CIBW_ARCHS: ppc64le s390x i686 #! `armv7l` not worth the trouble

.github/workflows/release.yml

@@ -90,6 +90,7 @@ jobs:
           cibuildwheel --output-dir wheelhouse
         env:
           CIBW_BUILD: cp${{ matrix.python-version }}-*
+          CIBW_ENABLE: cpython-freethreading # No-GIL 3.13t builds
           CIBW_PLATFORM: linux
           CIBW_ARCHS: x86_64
       - name: Upload wheels
@@ -133,6 +134,7 @@ jobs:
           cibuildwheel --output-dir wheelhouse
         env:
           CIBW_BUILD: cp${{ matrix.python-version }}-*
+          CIBW_ENABLE: cpython-freethreading # No-GIL 3.13t builds
           CIBW_PLATFORM: linux
           CIBW_ARCHS: aarch64
       - name: Upload wheels
@@ -163,6 +165,7 @@ jobs:
           cibuildwheel --output-dir wheelhouse
         env:
           CIBW_BUILD: cp${{ matrix.python-version }}-*
+          CIBW_ENABLE: cpython-freethreading # No-GIL 3.13t builds
           CIBW_PLATFORM: macos
           CIBW_ARCHS: x86_64
       - name: Upload wheels
@@ -179,7 +182,7 @@ jobs:
     strategy:
       matrix:
         # 3.7 not supported on macOS ARM
-        python-version: ["38", "39", "310", "311", "312", "313"]
+        python-version: ["38", "39", "310", "311", "312", "313", "313t"]
     steps:
       - uses: actions/checkout@v4
         with:
@@ -194,6 +197,7 @@ jobs:
           cibuildwheel --output-dir wheelhouse
         env:
           CIBW_BUILD: cp${{ matrix.python-version }}-*
+          CIBW_ENABLE: cpython-freethreading # No-GIL 3.13t builds
           CIBW_PLATFORM: macos
           CIBW_ARCHS: arm64
       - name: Upload wheels
@@ -242,6 +246,7 @@ jobs:
           cibuildwheel --output-dir wheelhouse
         env:
           CIBW_BUILD: cp${{ matrix.python-version }}-win_${{ matrix.architecture }}
+          CIBW_ENABLE: cpython-freethreading # No-GIL 3.13t builds
           CIBW_PLATFORM: windows
       - name: Upload wheels
         uses: actions/upload-artifact@v4
@@ -274,6 +279,7 @@ jobs:
         env:
           # e.g. ppc64le, s390x, i686, etc.
           CIBW_BUILD: cp${{ matrix.python-version }}-*
+          CIBW_ENABLE: cpython-freethreading # No-GIL 3.13t builds
           CIBW_PLATFORM: linux
           CIBW_ARCHS: ppc64le s390x i686
       - name: Upload wheels

pyproject.toml

@@ -4,7 +4,7 @@
 #   - `manylinux` and `musllinux` wheels for Linux on i686, ppc64le, s390x;
 #   - `macos` wheels for x86_64, arm64;
 #   - `windows` wheels for AMD64, ARM64.
-#   * for 7 Python versions from 3.7 to 3.13.
+#   * for 7 Python versions from 3.8 to 3.13 (+ 3.13t).
 #   * running thousands of fuzzy tests on each wheel.
 #   = meaning 12 platforms * 7 Python versions = 84 builds.
 [build-system]
@@ -105,4 +105,4 @@ test-command = """
 # https://black.readthedocs.io/en/latest/usage_and_configuration/the_basics.html#where-black-looks-for-the-file
 [tool.black]
 line-length = 120                  # Set line length to the same value as in `.clang-format` for modern wide screens
-target-version = ['py37', 'py312']
+target-version = ['py38', 'py312']