Upload free-threaded nightly wheels on Linux and macOS

Author: lysnikolaou

.github/workflows/wheels.yml

@@ -199,3 +199,110 @@ jobs:
           source ci/upload_wheels.sh
           set_upload_vars
           upload_wheels
+
+  build_free_threaded_wheels:
+    needs: build_sdist
+    name: Build wheel for ${{ matrix.python }}-${{ matrix.buildplat[1] }}
+    if: >-
+      (github.event_name == 'schedule') ||
+      github.event_name == 'workflow_dispatch' ||
+      (github.event_name == 'pull_request' &&
+      contains(github.event.pull_request.labels.*.name, 'Build'))
+    runs-on: ${{ matrix.buildplat[0] }}
+    strategy:
+      fail-fast: false
+      matrix:
+        # GitHub Actions doesn't support pairing matrix values together, let's improvise
+        # https://github.com/github/feedback/discussions/7835#discussioncomment-1769026
+        buildplat:
+        - [ubuntu-22.04, manylinux_x86_64]
+        - [ubuntu-22.04, musllinux_x86_64]
+        - [macos-13, macosx_x86_64]
+        - [macos-14, macosx_arm64]
+        python: ["cp313t"]
+    env:
+      IS_PUSH: false
+      IS_SCHEDULE_DISPATCH: ${{ github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' }}
+    steps:
+      - name: Checkout pandas
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      # TODO: Build wheels from sdist again
+      # There's some sort of weird race condition?
+      # within Github that makes the sdist be missing files
+
+      # We need to build wheels from the sdist since the sdist
+      # removes unnecessary files from the release
+      - name: Download sdist (not macOS)
+        #if: ${{ matrix.buildplat[1] != 'macosx_*' }}
+        uses: actions/download-artifact@v4
+        with:
+          name: sdist
+          path: ./dist
+
+      - name: Output sdist name (macOS)
+        id: save-path
+        shell: bash -el {0}
+        run: echo "sdist_name=$(ls ./dist)" >> "$GITHUB_ENV"
+
+      # Python version used to build sdist doesn't matter
+      # wheel will be built from sdist with the correct version
+      - name: Unzip sdist (macOS)
+        if: ${{ startsWith(matrix.buildplat[1], 'macosx') }}
+        run: |
+          tar -xzf ./dist/${{ env.sdist_name }} -C ./dist
+
+      - name: Output sdist name (macOS)
+        id: save-path2
+        shell: bash -el {0}
+        run: echo "sdist_name=$(cd ./dist && ls -d */)" >> "$GITHUB_ENV"
+
+      - name: Build wheels
+        uses: pypa/[email protected]
+        with:
+         package-dir: ./dist/${{ startsWith(matrix.buildplat[1], 'macosx') && env.sdist_name || needs.build_sdist.outputs.sdist_file }}
+        env:
+          CIBW_PRERELEASE_PYTHONS: True
+          CIBW_FREE_THREADED_SUPPORT: True
+          CIBW_BUILD: ${{ matrix.python }}-${{ matrix.buildplat[1] }}
+
+      - name: Set up Python
+        uses: mamba-org/setup-micromamba@v1
+        with:
+          environment-name: wheel-env
+          # Use a fixed Python, since we might have an unreleased Python not
+          # yet present on conda-forge
+          create-args: >-
+            python=3.11
+            anaconda-client
+            wheel
+          cache-downloads: true
+          cache-environment: true
+
+      - name: Validate wheel RECORD
+        shell: bash -el {0}
+        run: for whl in $(ls wheelhouse); do wheel unpack wheelhouse/$whl -d /tmp; done
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.python }}-${{ matrix.buildplat[1] }}
+          path: ./wheelhouse/*.whl
+
+      - name: Upload wheels & sdist
+        if: ${{ success() && (env.IS_SCHEDULE_DISPATCH == 'true' || env.IS_PUSH == 'true') }}
+        shell: bash -el {0}
+        env:
+          PANDAS_STAGING_UPLOAD_TOKEN: ${{ secrets.PANDAS_STAGING_UPLOAD_TOKEN }}
+          PANDAS_NIGHTLY_UPLOAD_TOKEN: ${{ secrets.PANDAS_NIGHTLY_UPLOAD_TOKEN }}
+        # trigger an upload to
+        # https://anaconda.org/scientific-python-nightly-wheels/pandas
+        # for cron jobs or "Run workflow" (restricted to main branch).
+        # Tags will upload to
+        # https://anaconda.org/multibuild-wheels-staging/pandas
+        # The tokens were originally generated at anaconda.org
+        run: |
+          source ci/upload_wheels.sh
+          set_upload_vars
+          upload_wheels