.github/workflows/cancel.yml

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name: Cancel
on: [push, pull_request]
jobs:
  cancel:
    name: 'Cancel Previous Runs'
    runs-on: ubuntu-latest
    timeout-minutes: 3
    steps:
      - name: Get workflow id
        run: |
          WORKFLOW_ID=$(curl "Authorization: token ${{ github.token }}" https://api.github.com/repos/${{ github.repository }}/actions/workflows/build_wheels.yml | jq '.id')
          echo "Workflow id: ${WORKFLOW_ID}"
          echo "::set-env name=WORKFLOW_ID::${WORKFLOW_ID}"
      - uses: styfle/cancel-workflow-action@0.3.2
        with:
          workflow_id: ${{ env.WORKFLOW_ID }}
          access_token: ${{ github.token }}