version: 2
jobs:
  build:
    docker:
      - image: nixorg/nix:circleci
    steps:
      - checkout
      - restore_cache:
          key: stack-deps-{{ checksum "stack.yaml" }}
      - run:
          name: Install Stack
          command: |
            apk update --no-progress && apk --no-progress add ca-certificates bash
            nix-env -f nixpkgs.nix -iA stack
      - run:
          name: Setup build toolchain
          command: stack --nix setup
      - run:
          name: Building dependencies
          command: stack --nix test --only-snapshot --prefetch
      - save_cache:
          paths:
            - "~/.stack"
          key: stack-deps-{{ checksum "stack.yaml" }}
      - run:
          name: Building
          command: stack --nix build --pedantic
      - run:
          name: Building tests
          command: stack --nix test --pedantic --no-run-tests
      - run:
          name: Running tests
          command: stack --nix test