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name: Detect Environment Variables
description: Detects environment variables such as CPU count and sets them as outputs.
runs:
  using: "composite"
  steps:
    - name: Run Python to detect environment variables
      shell: python
      id: detect
      run: |
        import multiprocessing, os

        output_file = open(os.environ.get("GITHUB_OUTPUT"), "a")

        def write_env_var(name, value):
            output_file.write(f"{name}={value}\n")
            print(f"Detected environment variable: {name}={value}")

        write_env_var("cpu_count", multiprocessing.cpu_count())

outputs:
  cpu_count:
    description: "The number of CPU cores"
    value: ${{ steps.detect.outputs.cpu_count }}
