steps:
  - ${{ if not(startsWith(parameters.platform, 'Windows')) }}:
    # Linux and macOS.
    - script: |
        set -e
        curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain $RUSTUP_TOOLCHAIN
        echo "##vso[task.setvariable variable=PATH;]$PATH:$HOME/.cargo/bin"
      env:
        RUSTUP_TOOLCHAIN: ${{parameters.rust_version}}
      displayName: Install rust
  - ${{ if startsWith(parameters.platform, 'Windows') }}:
    # Windows.
    - script: |
        echo "windows"
        curl -sSf -o rustup-init.exe https://win.rustup.rs
        rustup-init.exe -y --default-toolchain %RUSTUP_TOOLCHAIN%
        set PATH=%PATH%;%USERPROFILE%\.cargo\bin
        echo "##vso[task.setvariable variable=PATH;]%PATH%;%USERPROFILE%\.cargo\bin"
      env:
        RUSTUP_TOOLCHAIN: ${{parameters.rust_version}}
      displayName: Install rust (windows)
  # All platforms.
  - bash: |
        rustc -Vv
        cargo -V
    displayName: Query rust and cargo versions