diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index d517cf83..61d42b2e 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -7,6 +7,12 @@ on:
 #    types: [opened, synchronize, reopened]
   workflow_dispatch:
     inputs:
+      libyaml_repo:
+        type: string
+        default: https://github.com/yaml/libyaml
+      libyaml_ref:
+        type: string
+        default: 0.2.5
       skip_artifact_upload:
         type: boolean
         default: true
@@ -18,206 +24,226 @@ on:
         default: true
 
 env:
-  LIBYAML_REPO: https://github.com/yaml/libyaml
-  LIBYAML_REF: 0.2.5
+  LIBYAML_REPO: ${{ inputs.libyaml_repo || 'https://github.com/yaml/libyaml' }}  # FIXME: can we ref the input.default value?
+  LIBYAML_REF: ${{ inputs.libyaml_ref || '0.2.5' }}  # FIXME: can we ref the input.default value?
   skip_ci_redundant_jobs: ${{ inputs.skip_ci_redundant_jobs || github.event_name == 'pull_request' || github.event_name == 'push' }}
   skip_slow_jobs: ${{ inputs.skip_slow_jobs || github.event_name == 'pull_request' || github.event_name == 'push' }}
   skip_artifact_upload: ${{ inputs.skip_artifact_upload || true }}  # ${{ github.event_name == 'pull_request' }}
 
 jobs:
-#  python_sdist:
-#    name: pyyaml sdist
-#    runs-on: ubuntu-22.04
-#    steps:
-#    - name: Checkout PyYAML
-#      uses: actions/checkout@v4
-#
-#    - name: Install a python
-#      uses: actions/setup-python@v5
-#      with:
-#        python-version: 3.x
-#
-#    - name: Build sdist
-#      env:
-#        PYYAML_FORCE_CYTHON: 1
-#        PYYAML_FORCE_LIBYAML: 0
-#      run: |
-#        python -V
-#        python -m pip install build
-#
-#        python -m build .
-#
-#        # Ensure exactly one artifact was produced.
-#        [[ $(shopt -s nullglob; ls dist/*.tar.gz | wc -w) == 1 ]] || {
-#          echo "Unexpected content in dist dir: '$(ls dist/*.tar.gz)'."
-#          exit 1
-#        }
-#
-#    - name: Test sdist
-#      run: |
-#        # Install some libyaml headers.
-#        # TODO Should we smoke test the sdist against the libyaml we built?
-#        sudo apt update
-#        sudo apt install libyaml-dev -y
-#
-#        # Ensure Cython is not present so we use only what's in the sdist.
-#        python -m pip uninstall Cython -y || true
-#
-#        # Pass no extra args.
-#        # We should auto-install with libyaml since it's present.
-#        python -m pip install dist/*.tar.gz -v
-#
-#        python packaging/build/smoketest.py
-#
-#    - name: Upload sdist artifact
-#      uses: actions/upload-artifact@v3
-#      with:
-#        name: dist
-#        path: dist/*.tar.gz
-#
-#
-#  linux_libyaml:
-#    name: libyaml ${{matrix.cfg.arch}} ${{matrix.cfg.platform}}
-#    runs-on: ubuntu-22.04
-#    strategy:
-#      # FIXME: dynamic matrix away the slow ones
-#      matrix:
-#        cfg:
-#        - { platform: manylinux1, arch: x86_64 }
-#        - { platform: manylinux2014, arch: x86_64 }
-#        - { platform: manylinux2014, arch: aarch64 }
-#        - { platform: manylinux2014, arch: s390x }
-#        - { platform: musllinux_1_1, arch: x86_64 }
-#        - { platform: musllinux_1_1, arch: aarch64 }
-#    env:
-#      DOCKER_IMAGE: quay.io/pypa/${{matrix.cfg.platform}}_${{matrix.cfg.arch}}
-#    steps:
-#    - name: Check cached libyaml state
-#      id: cached_libyaml
-#      uses: actions/cache@v4
-#      with:
-#        path: libyaml
-#        key: libyaml_${{matrix.cfg.platform}}_${{matrix.cfg.arch}}_${{env.LIBYAML_REF}}
-#
-#    - name: configure docker foreign arch support
-#      uses: docker/setup-qemu-action@v3
-#      if: matrix.cfg.arch != 'x86_64' && steps.cached_libyaml.outputs.cache-hit != 'true'
-#
-#    - name: Checkout pyyaml
-#      uses: actions/checkout@v4
-#      if: steps.cached_libyaml.outputs.cache-hit != 'true'
-#
-#    - name: Build libyaml
-#      run: >
-#        docker run --rm
-#        --volume "$(pwd):/io"
-#        --env LIBYAML_REF
-#        --env LIBYAML_REPO
-#        --workdir /io
-#        "$DOCKER_IMAGE"
-#        /io/packaging/build/libyaml.sh
-#      if: steps.cached_libyaml.outputs.cache-hit != 'true'
-#
-#    - name: ensure output is world readable (or cache fill fails with Permission Denied)
-#      run: >
-#        sudo chmod -R a+r ./libyaml/
-#      if: steps.cached_libyaml.outputs.cache-hit != 'true'
-#
-#  make_linux_pyyaml_matrix:
-#    runs-on: ubuntu-22.04
-#    outputs:
-#      matrix_json: ${{ steps.make_matrix.outputs.matrix_json }}
-#    steps:
-#    - uses: actions/checkout@v4
-#    - name: make a matrix
-#      id: make_matrix
-#      uses: ./.github/actions/dynamatrix
-#      with:
-#        matrix_yaml: |
-#          include:
-#          - { platform: manylinux1, arch: x86_64, spec: cp38, omit: ${{ env.skip_ci_redundant_jobs }} }
-#          - { platform: manylinux1, arch: x86_64, spec: cp39, omit: ${{ env.skip_ci_redundant_jobs }} }
-#          - { platform: manylinux2014, arch: x86_64, spec: cp310, omit: ${{ env.skip_ci_redundant_jobs }} }
-#          - { platform: manylinux2014, arch: x86_64, spec: cp311, omit: ${{ env.skip_ci_redundant_jobs }} }
-#          - { platform: manylinux2014, arch: x86_64, spec: cp312, omit: ${{ env.skip_ci_redundant_jobs }} }
-#          - { platform: manylinux2014, arch: x86_64, spec: cp313, cibw_version: "https://github.com/nitzmahone/cibuildwheel/archive/refs/heads/py313_support.zip" }
-#          - { platform: manylinux2014, arch: aarch64, spec: cp38, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: manylinux2014, arch: aarch64, spec: cp39, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: manylinux2014, arch: aarch64, spec: cp310, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: manylinux2014, arch: aarch64, spec: cp311, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: manylinux2014, arch: aarch64, spec: cp312, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: manylinux2014, arch: aarch64, spec: cp313, cibw_version: "https://github.com/nitzmahone/cibuildwheel/archive/refs/heads/py313_support.zip", omit: ${{ env.skip_slow_jobs }} }
-#          - { platform: manylinux2014, arch: s390x, spec: cp38, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: manylinux2014, arch: s390x, spec: cp39, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: manylinux2014, arch: s390x, spec: cp310, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: manylinux2014, arch: s390x, spec: cp311, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: manylinux2014, arch: s390x, spec: cp312, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: manylinux2014, arch: s390x, spec: cp313, cibw_version: "https://github.com/nitzmahone/cibuildwheel/archive/refs/heads/py313_support.zip", omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: musllinux_1_1, arch: x86_64, spec: cp38, omit: ${{ env.skip_ci_redundant_jobs }} }
-#          - { platform: musllinux_1_1, arch: x86_64, spec: cp39, omit: ${{ env.skip_ci_redundant_jobs }} }
-#          - { platform: musllinux_1_1, arch: x86_64, spec: cp310, omit: ${{ env.skip_ci_redundant_jobs }} }
-#          - { platform: musllinux_1_1, arch: x86_64, spec: cp311, omit: ${{ env.skip_ci_redundant_jobs }} }
-#          - { platform: musllinux_1_1, arch: x86_64, spec: cp312, omit: ${{ env.skip_ci_redundant_jobs }} }
-#          - { platform: musllinux_1_1, arch: x86_64, spec: cp313, cibw_version: "https://github.com/nitzmahone/cibuildwheel/archive/refs/heads/py313_support.zip", omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: musllinux_1_1, arch: aarch64, spec: cp39, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: musllinux_1_1, arch: aarch64, spec: cp310, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: musllinux_1_1, arch: aarch64, spec: cp311, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: musllinux_1_1, arch: aarch64, spec: cp312, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
-#          - { platform: musllinux_1_1, arch: aarch64, spec: cp313, cibw_version: "https://github.com/nitzmahone/cibuildwheel/archive/refs/heads/py313_support.zip", omit: ${{ env.skip_slow_jobs }} }
-#
-#
-#  linux_pyyaml:
-#    needs: [linux_libyaml, make_linux_pyyaml_matrix]
-#    name: pyyaml ${{matrix.arch}} ${{matrix.platform}} ${{matrix.spec}}
-#    runs-on: ubuntu-22.04
-#    strategy:
-#      fail-fast: false
-#      matrix: ${{ fromJSON(needs.make_linux_pyyaml_matrix.outputs.matrix_json) }}
-#
-#    steps:
-#    - name: Checkout PyYAML
-#      uses: actions/checkout@v4
-#
-#    - name: Fetch cached libyaml
-#      id: cached_libyaml
-#      uses: actions/cache/restore@v4
-#      with:
-#        path: libyaml
-#        key: libyaml_${{matrix.platform}}_${{matrix.arch}}_${{env.LIBYAML_REF}}
-#        fail-on-cache-miss: true
-#
-#    - name: configure docker foreign arch support
-#      uses: docker/setup-qemu-action@v3
-#      if: matrix.arch != 'x86_64'
-#
-#    - name: Build/Test/Package
-#      env:
-#        CIBW_ARCHS: all
-#        # HACK: ick, maybe deconstruct the matrix a bit or query cibuildwheel for its default target *linux spec first?
-#        CIBW_BUILD: ${{matrix.spec}}-${{ contains(matrix.platform, 'musllinux') && 'musllinux' || 'manylinux' }}_${{matrix.arch}}
-#        CIBW_BUILD_VERBOSITY: 1
-#        # containerized Linux builds require explicit CIBW_ENVIRONMENT
-#        CIBW_ENVIRONMENT: >
-#          C_INCLUDE_PATH=libyaml/include
-#          LIBRARY_PATH=libyaml/src/.libs
-#          LD_LIBRARY_PATH=libyaml/src/.libs
-#          PYYAML_FORCE_CYTHON=1
-#          PYYAML_FORCE_LIBYAML=1
-#        CIBW_TEST_COMMAND: cd {project}; pytest
-#        CIBW_TEST_REQUIRES: pytest
-#      run: |
-#        set -eux
-#        python3 -V
-#        python3 -m pip install -U --user ${{ matrix.cibw_version || 'cibuildwheel' }}
-#        python3 -m cibuildwheel --platform auto --output-dir dist .
-#
-#    - name: Upload artifacts
-#      uses: actions/upload-artifact@v3
-#      with:
-#        name: dist
-#        path: dist/*.whl
-#        if-no-files-found: error
-#      if: ${{ ! env.skip_artifact_upload }}
+  python_sdist:
+    name: pyyaml sdist
+    runs-on: ubuntu-22.04
+    steps:
+    - name: Checkout PyYAML
+      uses: actions/checkout@v4
+
+    - name: Install a python
+      uses: actions/setup-python@v5
+      with:
+        python-version: 3.x
+
+    - name: Build sdist
+      env:
+        PYYAML_FORCE_CYTHON: 1
+        PYYAML_FORCE_LIBYAML: 0
+      run: |
+        python -V
+        python -m pip install build
+
+        python -m build .
+
+        # Ensure exactly one artifact was produced.
+        [[ $(shopt -s nullglob; ls dist/*.tar.gz | wc -w) == 1 ]] || {
+          echo "Unexpected content in dist dir: '$(ls dist/*.tar.gz)'."
+          exit 1
+        }
+
+    - name: Test sdist
+      run: |
+        # Install some libyaml headers.
+        # TODO Should we smoke test the sdist against the libyaml we built?
+        sudo apt update
+        sudo apt install libyaml-dev -y
+
+        # Ensure Cython is not present so we use only what's in the sdist.
+        python -m pip uninstall Cython -y || true
+
+        # Pass no extra args.
+        # We should auto-install with libyaml since it's present.
+        python -m pip install dist/*.tar.gz -v
+
+        python packaging/build/smoketest.py
+
+        echo "ARTIFACT_NAME=$(ls ./dist/)" >> "$GITHUB_OUTPUT"
+        # FIXME: ensure exactly one artifact
+
+    - name: Upload sdist artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: ${{ steps.build.outputs.ARTIFACT_NAME }}
+        path: dist/${{ steps.build.outputs.ARTIFACT_NAME }}
+        if-no-files-found: error
+      if: ${{ ! env.skip_artifact_upload }}
+
+  make_linux_libyaml_matrix:
+    runs-on: ubuntu-22.04
+    outputs:
+      matrix_json: ${{ steps.make_matrix.outputs.matrix_json }}
+    steps:
+    - uses: actions/checkout@v4
+    - name: make a matrix
+      id: make_matrix
+      uses: ./.github/actions/dynamatrix
+      with:
+        matrix_yaml: |
+          include:
+          - { platform: manylinux1, arch: x86_64 }
+          - { platform: manylinux2014, arch: x86_64 }
+          - { platform: manylinux2014, arch: aarch64, omit: ${{ env.skip_slow_jobs }} }
+          - { platform: manylinux2014, arch: s390x, omit: ${{ env.skip_slow_jobs }} }
+          - { platform: musllinux_1_1, arch: x86_64 }
+          - { platform: musllinux_1_1, arch: aarch64 }
+
+  linux_libyaml:
+    name: libyaml ${{matrix.arch}} ${{matrix.platform}}
+    runs-on: ubuntu-22.04
+    strategy:
+      fail-fast: false
+      matrix: ${{ fromJSON(needs.make_linux_libyaml_matrix.outputs.matrix_json) }}
+    env:
+      DOCKER_IMAGE: quay.io/pypa/${{matrix.platform}}_${{matrix.arch}}
+    steps:
+    - name: Check cached libyaml state
+      id: cached_libyaml
+      uses: actions/cache@v4
+      with:
+        path: libyaml
+        key: libyaml_${{matrix.platform}}_${{matrix.arch}}_${{env.LIBYAML_REF}}
+
+    - name: configure docker foreign arch support
+      uses: docker/setup-qemu-action@v3
+      if: matrix.arch != 'x86_64' && steps.cached_libyaml.outputs.cache-hit != 'true'
+
+    - name: Checkout pyyaml
+      uses: actions/checkout@v4
+      if: steps.cached_libyaml.outputs.cache-hit != 'true'
+
+    - name: Build libyaml
+      run: >
+        docker run --rm
+        --volume "$(pwd):/io"
+        --env LIBYAML_REF
+        --env LIBYAML_REPO
+        --workdir /io
+        "$DOCKER_IMAGE"
+        /io/packaging/build/libyaml.sh
+      if: steps.cached_libyaml.outputs.cache-hit != 'true'
+
+    - name: ensure output is world readable (or cache fill fails with Permission Denied)
+      run: >
+        sudo chmod -R a+r ./libyaml/
+      if: steps.cached_libyaml.outputs.cache-hit != 'true'
+
+  make_linux_pyyaml_matrix:
+    runs-on: ubuntu-22.04
+    outputs:
+      matrix_json: ${{ steps.make_matrix.outputs.matrix_json }}
+    steps:
+    - uses: actions/checkout@v4
+    - name: make a matrix
+      id: make_matrix
+      uses: ./.github/actions/dynamatrix
+      with:
+        matrix_yaml: |
+          include:
+          - { platform: manylinux1, arch: x86_64, spec: cp38, omit: ${{ env.skip_ci_redundant_jobs }} }
+          - { platform: manylinux1, arch: x86_64, spec: cp39, omit: ${{ env.skip_ci_redundant_jobs }} }
+          - { platform: manylinux2014, arch: x86_64, spec: cp310, omit: ${{ env.skip_ci_redundant_jobs }} }
+          - { platform: manylinux2014, arch: x86_64, spec: cp311, omit: ${{ env.skip_ci_redundant_jobs }} }
+          - { platform: manylinux2014, arch: x86_64, spec: cp312, omit: ${{ env.skip_ci_redundant_jobs }} }
+          - { platform: manylinux2014, arch: x86_64, spec: cp313, cibw_version: "https://github.com/nitzmahone/cibuildwheel/archive/refs/heads/py313_support.zip" }
+          - { platform: manylinux2014, arch: aarch64, spec: cp38, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: manylinux2014, arch: aarch64, spec: cp39, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: manylinux2014, arch: aarch64, spec: cp310, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: manylinux2014, arch: aarch64, spec: cp311, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: manylinux2014, arch: aarch64, spec: cp312, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: manylinux2014, arch: aarch64, spec: cp313, cibw_version: "https://github.com/nitzmahone/cibuildwheel/archive/refs/heads/py313_support.zip", omit: ${{ env.skip_slow_jobs }} }
+          - { platform: manylinux2014, arch: s390x, spec: cp38, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: manylinux2014, arch: s390x, spec: cp39, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: manylinux2014, arch: s390x, spec: cp310, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: manylinux2014, arch: s390x, spec: cp311, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: manylinux2014, arch: s390x, spec: cp312, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: manylinux2014, arch: s390x, spec: cp313, cibw_version: "https://github.com/nitzmahone/cibuildwheel/archive/refs/heads/py313_support.zip", omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: musllinux_1_1, arch: x86_64, spec: cp38, omit: ${{ env.skip_ci_redundant_jobs }} }
+          - { platform: musllinux_1_1, arch: x86_64, spec: cp39, omit: ${{ env.skip_ci_redundant_jobs }} }
+          - { platform: musllinux_1_1, arch: x86_64, spec: cp310, omit: ${{ env.skip_ci_redundant_jobs }} }
+          - { platform: musllinux_1_1, arch: x86_64, spec: cp311, omit: ${{ env.skip_ci_redundant_jobs }} }
+          - { platform: musllinux_1_1, arch: x86_64, spec: cp312, omit: ${{ env.skip_ci_redundant_jobs }} }
+          - { platform: musllinux_1_1, arch: x86_64, spec: cp313, cibw_version: "https://github.com/nitzmahone/cibuildwheel/archive/refs/heads/py313_support.zip", omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: musllinux_1_1, arch: aarch64, spec: cp39, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: musllinux_1_1, arch: aarch64, spec: cp310, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: musllinux_1_1, arch: aarch64, spec: cp311, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: musllinux_1_1, arch: aarch64, spec: cp312, omit: ${{ env.skip_ci_redundant_jobs || env.skip_slow_jobs }} }
+          - { platform: musllinux_1_1, arch: aarch64, spec: cp313, cibw_version: "https://github.com/nitzmahone/cibuildwheel/archive/refs/heads/py313_support.zip", omit: ${{ env.skip_slow_jobs }} }
+
+
+  linux_pyyaml:
+    needs: [linux_libyaml, make_linux_pyyaml_matrix]
+    name: pyyaml ${{matrix.arch}} ${{matrix.platform}} ${{matrix.spec}}
+    runs-on: ubuntu-22.04
+    strategy:
+      fail-fast: false
+      matrix: ${{ fromJSON(needs.make_linux_pyyaml_matrix.outputs.matrix_json) }}
+
+    steps:
+    - name: Checkout PyYAML
+      uses: actions/checkout@v4
+
+    - name: Fetch cached libyaml
+      id: cached_libyaml
+      uses: actions/cache/restore@v4
+      with:
+        path: libyaml
+        key: libyaml_${{matrix.platform}}_${{matrix.arch}}_${{env.LIBYAML_REF}}
+        fail-on-cache-miss: true
+
+    - name: configure docker foreign arch support
+      uses: docker/setup-qemu-action@v3
+      if: matrix.arch != 'x86_64'
+
+    - name: Build/Test/Package
+      env:
+        CIBW_ARCHS: all
+        # HACK: ick, maybe deconstruct the matrix a bit or query cibuildwheel for its default target *linux spec first?
+        CIBW_BUILD: ${{matrix.spec}}-${{ contains(matrix.platform, 'musllinux') && 'musllinux' || 'manylinux' }}_${{matrix.arch}}
+        CIBW_BUILD_VERBOSITY: 1
+        # containerized Linux builds require explicit CIBW_ENVIRONMENT
+        CIBW_ENVIRONMENT: >
+          C_INCLUDE_PATH=libyaml/include
+          LIBRARY_PATH=libyaml/src/.libs
+          LD_LIBRARY_PATH=libyaml/src/.libs
+          PYYAML_FORCE_CYTHON=1
+          PYYAML_FORCE_LIBYAML=1
+        CIBW_TEST_COMMAND: cd {project}; pytest
+        CIBW_TEST_REQUIRES: pytest
+      run: |
+        set -eux
+        python3 -V
+        python3 -m pip install -U --user ${{ matrix.cibw_version || 'cibuildwheel' }}
+        python3 -m cibuildwheel --platform auto --output-dir dist .
+
+        echo "ARTIFACT_NAME=$(ls ./dist/)" >> "$GITHUB_OUTPUT"
+        # FIXME: ensure exactly one artifact
+
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: ${{ steps.build.outputs.ARTIFACT_NAME }}
+        path: dist/*.whl
+        if-no-files-found: error
+      if: ${{ ! env.skip_artifact_upload }}
+
 #
 #  macos_libyaml:
 #    name: libyaml macos ${{matrix.arch}}
@@ -450,6 +476,8 @@ jobs:
 
     - name: Checkout pyyaml
       uses: actions/checkout@v4
+      with:
+        python-version: 3.x
 
     - name: Get cached libyaml state
       id: cached_libyaml
@@ -487,6 +515,8 @@ jobs:
         path: dist/*.whl
         if-no-files-found: error
 
+# FIXME: artifact combine job?
+#
 #  check:
 #    if: always()
 #    needs: