jobs:
- job: ${{ parameters.name }}
  timeoutInMinutes: 120
  variables:
    STACK_ROOT: $(Build.SourcesDirectory)/.stack-root
  pool:
    vmImage: ${{ parameters.vmImage }}
  strategy:
    matrix:
      stack:
        BUILD: stack
        STACK_YAML: stack.yaml
        ARGS: --pedantic
      stack-lts-15:
        BUILD: stack
        STACK_YAML: stack-lts-15.yaml
      stack-lts-14:
        BUILD: stack
        STACK_YAML: stack-lts-14.yaml
      #stack-nightly:
      #  BUILD: stack
      #  ARGS: --resolver nightly --no-run-tests
    maxParallel: 6
  steps:
  - task: Cache@2
    inputs:
      key: ${{ parameters.name }} | ${{ parameters.vmImage }} | $(ARGS) | $(STACK_YAML) | stack-root | $(Agent.OS) | v2
      path: $(STACK_ROOT)
      cacheHitVar: CACHE_RESTORED
    displayName: Cache stack root
  - script: |
      set -o xtrace
      #sudo add-apt-repository ppa:jonathonf/ffmpeg-4
      sudo apt-get update
      # sudo apt-get install libopenblas-dev libgfortran4
      sudo apt-get install liblapack-dev libblas-dev
      #sudo apt-get install ffmpeg
      #sudo apt-get install texlive texlive-latex-base texlive-latex-extra texlive-fonts-extra texlive-science texlive-xetex texlive-latex-recommended texlive-lang-english texlive-lang-chinese
      #sudo apt-get install povray
      mkdir -p ~/.local/bin
      curl -L https://get.haskellstack.org/stable/linux-x86_64.tar.gz | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'

      export PATH=$HOME/.local/bin:$PATH
    displayName: 'Setup'
  - script: |
      set -o xtrace
      stack --install-ghc build $ARGS --only-dependencies
      stack --install-ghc build $ARGS --test --only-dependencies
    displayName: 'Install dependencies'
  - script: |
      set -o xtrace
      # stack ./examples/counter.hs check
      stack test $ARGS
    displayName: 'Build & Test'
  - script: |
      set -o xtrace
      stack haddock --no-haddock-deps $ARGS
    displayName: 'Build documentation'