name: CI
on:
  push:
    branches:
      - master
  pull_request:
jobs:
  materialize-check:
    name: Check materialization files for GHC ${{ matrix.ghc }}
    runs-on: ubuntu-latest
    strategy:
      matrix:
        ghc: [ "8.6.5", "8.8.3" ]
        glibc: [ "2.30" ]
    steps:
    - uses: actions/checkout@v2
    - uses: cachix/install-nix-action@v10
    - name: Make sure materializations are up-to-date
      run: |
        materializationId=$(nix-instantiate --read-write-mode --eval sources.nix -A materializationId | tr -d '"')
        if ! diff "$materializationId" "generated/${{ matrix.ghc }}/materialization-id"; then
          echo "The materialization files for ${{ matrix.ghc }} are outdated"
          echo "Run"
          echo "  \$(nix-build build.nix -A materialize --argstr ghcVersion ${{ matrix.ghc }} --argstr glibcName glibc-${{ matrix.glibc }})"
          echo "to update them"
          exit 1
        fi
        echo "Materialization files up-to-date" >&2

  build:
    name: HIE Build for ${{ matrix.os }}, GHC ${{ matrix.ghc }}, glibc ${{ matrix.glibc }}
    runs-on: ${{ matrix.os }}
    needs: materialize-check
    strategy:
      matrix:
        os: [ ubuntu-latest, macos-latest ]
        ghc: [ "8.6.5", "8.8.3" ]
        glibc: [ "2.30" ]
        include:
          # Only linux needs matching glibc versions
          - os: ubuntu-latest
            ghc: "8.6.5"
            glibc: "2.27"
          - os: ubuntu-latest
            ghc: "8.8.3"
            glibc: "2.27"
    steps:
    - uses: actions/checkout@v2
    - uses: cachix/install-nix-action@v10
    - uses: cachix/cachix-action@09c0620ab018415cbf1e6792e1f415cf892879b5
      with:
        name: all-hies
        extraPullNames: iohk
        signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
    - name: Instantiate HIE
      run: |
        nix-instantiate build.nix \
          -A combined \
          --argstr ghcVersion ${{ matrix.ghc }} \
          --argstr glibcName glibc-${{ matrix.glibc }} \
          --add-root $PWD/drv --indirect
    - name: Build HIE
      run: |
        path=$(nix-store --query --outputs drv)
        url=$(sed -E <<< "$path" \
          -e 's|-.*|.narinfo|' \
          -e 's|/nix/store|https://all-hies.cachix.org|')
        code=$(curl -s -o /dev/null -w "%{http_code}\n" "$url")
        case "$code" in
          200)
            echo "Derivation already in cache, not building it"
            ;;
          *)
            echo "Derivation not in cache, building it"
            # Since we have a lot of derivations to build, do as many of them
            # in parallel, but all of them with a single core
            nix-store --realise drv --max-jobs auto --cores 1
            ;;
        esac

  template_haskell-nix-stack:
    name: Haskell.nix stack template for ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    needs: build
    strategy:
      matrix:
        os: [ ubuntu-latest, macos-latest ]
    defaults:
      run:
        working-directory: templates/haskell.nix-stack
    steps:
    - uses: actions/checkout@v2
    - uses: cachix/install-nix-action@v10
    - uses: cachix/cachix-action@09c0620ab018415cbf1e6792e1f415cf892879b5
      with:
        name: all-hies
        extraPullNames: iohk
    - name: Entering nix-shell
      run: |
        nix-shell --run "echo Successfully entered nix-shell"
    - name: Call HIE
      run: |
        nix-shell --run "hie 2>&1 | tee /dev/stderr | grep 'Main.hs: OK'"
    - name: Search hoogle
      run: |
        nix-shell --run "hoogle fromMaybe | grep Data.Maybe"
    - name: Build and run with cabal
      run: |
        nix-shell --run "stack run"
    - name: Build and run with Nix
      run: |
        nix-build
        ./result/bin/all-hies-template

  template_haskell-nix-cabal:
    name: Haskell.nix cabal template for ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    needs: build
    strategy:
      matrix:
        os: [ ubuntu-latest, macos-latest ]
    defaults:
      run:
        working-directory: templates/haskell.nix-cabal
    steps:
    - uses: actions/checkout@v2
    - uses: cachix/install-nix-action@v10
    - uses: cachix/cachix-action@09c0620ab018415cbf1e6792e1f415cf892879b5
      with:
        name: all-hies
        extraPullNames: iohk
    - name: Entering nix-shell
      run: |
        nix-shell --run "echo Successfully entered nix-shell"
    - name: Call HIE
      run: |
        nix-shell --run "hie 2>&1 | tee /dev/stderr | grep 'Main.hs: OK'"
    - name: Search hoogle
      run: |
        nix-shell --run "hoogle fromMaybe | grep Data.Maybe"
    - name: Build and run with cabal
      run: |
        nix-shell --run "cabal run"
    - name: Build and run with Nix
      run: |
        nix-build
        ./result/bin/all-hies-template

  template_nixpkgs-cabal:
    name: Nixpkgs cabal template for ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    needs: build
    strategy:
      matrix:
        os: [ ubuntu-latest, macos-latest ]
    defaults:
      run:
        working-directory: templates/nixpkgs-cabal
    steps:
    - uses: actions/checkout@v2
    - uses: cachix/install-nix-action@v10
    - uses: cachix/cachix-action@09c0620ab018415cbf1e6792e1f415cf892879b5
      with:
        name: all-hies
    - name: Entering nix-shell
      run: |
        nix-shell --run "echo Successfully entered nix-shell"
    - name: Call HIE
      run: |
        nix-shell --run "hie 2>&1 | tee /dev/stderr | grep 'Main.hs: OK'"
    - name: Search hoogle
      run: |
        nix-shell --run "hoogle fromMaybe | grep Data.Maybe"
    - name: Build and run with cabal
      run: |
        nix-shell --run "cabal run"
    - name: Build and run with Nix
      run: |
        nix-build
        ./result/bin/all-hies-template