steps:
  - script: |
      set -e
      set -o pipefail
      echo "SYSTEM_PHASENAME=$SYSTEM_PHASENAME ARTIFACT_CLI=$ARTIFACT_CLI"
      PYTHON_CONFIGURE_OPTS="--enable-shared"
      if [ "${SYSTEM_PHASENAME}" == "Linux" ]; then
        sudo apt-get update
        sudo apt-get install -y libbz2-dev libreadline-dev libsqlite3-dev
      elif [ "${SYSTEM_PHASENAME}" == "MacOS" ]; then
        PYTHON_CONFIGURE_OPTS="$PYTHON_CONFIGURE_OPTS --with-openssl=$(brew --prefix openssl)"
      fi
      export PYENV_ROOT="$(Agent.WorkFolder)/.pyenv"
      git clone https://github.com/pyenv/pyenv.git $PYENV_ROOT
      export PATH="$PYENV_ROOT/bin:$PATH"
      pyenv --version
      export PYTHON_CONFIGURE_OPTS
      pyenv install $PYENV_VERSION
      unset PYTHON_CONFIGURE_OPTS
      pyenv global $PYENV_VERSION
      echo "##vso[task.prependpath]$PYENV_ROOT/bin"
      echo "##vso[task.prependpath]$PYENV_ROOT/shims"
    displayName: Install Python
    condition: and(succeeded(), ne(variables['ARTIFACT_CLI'], ''))