Circle CI 2.0 configuration for Haskell Stack (multiple GHC & LTS versions)

config.yml

version: 2

workflows:
  version: 2
  build-and-test:
    jobs:
      - build
      - build-nightly
      - build-lts-11
      - build-lts-10
      - build-lts-9

references:

  # Default branch / master

  default_cache_key: &default_cache_key
    v2-stack-{{ checksum "stack.yaml" }}-{{ checksum "package.yaml" }}

  restore_stack_default_cache: &restore_stack_default_cache
    restore_cache:
      keys:
        - *default_cache_key
        - v2-stack-{{ checksum "stack.yaml" }}
        - v2-stack

  save_stack_default_cache: &save_stack_default_cache
    save_cache:
      key: *default_cache_key
      paths:
        - ~/.stack

  # nightly

  nightly_cache_key: &nightly_cache_key
    v2-stack-nightly-{{ checksum "package.yaml" }}

  restore_stack_nightly_cache: &restore_stack_nightly_cache
    restore_cache:
      keys:
        - *nightly_cache_key
        - v2-stack

  save_stack_nightly_cache: &save_stack_nightly_cache
    save_cache:
      key: *nightly_cache_key
      paths:
        - ~/.stack

  # lts-11

  lts-11_cache_key: &lts-11_cache_key
    v2-stack-lts-11-{{ checksum "package.yaml" }}

  restore_stack_lts-11_cache: &restore_stack_lts-11_cache
    restore_cache:
      keys:
        - *lts-11_cache_key
        - v2-stack

  save_stack_lts-11_cache: &save_stack_lts-11_cache
    save_cache:
      key: *lts-11_cache_key
      paths:
        - ~/.stack

  # lts-10

  lts-10_cache_key: &lts-10_cache_key
    v2-stack-lts-10-{{ checksum "package.yaml" }}

  restore_stack_lts-10_cache: &restore_stack_lts-10_cache
    restore_cache:
      keys:
        - *lts-10_cache_key
        - v2-stack

  save_stack_lts-10_cache: &save_stack_lts-10_cache
    save_cache:
      key: *lts-10_cache_key
      paths:
        - ~/.stack

  # lts-9

  lts-9_cache_key: &lts-9_cache_key
    v2-stack-lts-9-{{ checksum "package.yaml" }}

  restore_stack_lts-9_cache: &restore_stack_lts-9_cache
    restore_cache:
      keys:
        - *lts-9_cache_key
        - v2-stack

  save_stack_lts-9_cache: &save_stack_lts-9_cache
    save_cache:
      key: *lts-9_cache_key
      paths:
        - ~/.stack

jobs:
  build:
    docker:
      - image: fpco/stack-build:lts-12.7
    environment:
      STACK_ARGS: "--jobs 2"
    steps:
      - checkout
      - *restore_stack_default_cache
      - run: stack setup $STACK_ARGS
      - run: stack install $STACK_ARGS --only-dependencies --test --no-run-tests
      - *save_stack_default_cache
      - run: stack test --no-terminal

  build-nightly:
    docker:
      - image: fpco/stack-build:latest
    environment:
      STACK_ARGS: "--resolver nightly --no-terminal --jobs 2"
    steps:
      - checkout
      - *restore_stack_nightly_cache
      - run: stack setup $STACK_ARGS
      - run: stack install $STACK_ARGS --only-dependencies --test --no-run-tests
      - *save_stack_nightly_cache
      - run: stack test $STACK_ARGS

  build-lts-11:
    docker:
      - image: fpco/stack-build:lts-11
    environment:
      STACK_ARGS: "--resolver lts-11 --no-terminal --jobs 2"
    steps:
      - checkout
      - *restore_stack_lts-11_cache
      - run: stack setup $STACK_ARGS
      - run: stack install $STACK_ARGS --only-dependencies --test --no-run-tests
      - *save_stack_lts-11_cache
      - run: stack test $STACK_ARGS

  build-lts-10:
    docker:
      - image: fpco/stack-build:lts-10
    environment:
      STACK_ARGS: "--resolver lts-10 --no-terminal --jobs 2"
    steps:
      - checkout
      - *restore_stack_lts-10_cache
      - run: stack setup $STACK_ARGS
      - run: stack install $STACK_ARGS --only-dependencies --test --no-run-tests
      - *save_stack_lts-10_cache
      - run: stack test $STACK_ARGS

  build-lts-9:
    docker:
      - image: fpco/stack-build:lts-9
    environment:
      STACK_ARGS: "--resolver lts-9 --no-terminal --jobs 2"
    steps:
      - checkout
      - *restore_stack_lts-9_cache
      - run: stack setup $STACK_ARGS
      - run: stack install $STACK_ARGS --only-dependencies --test --no-run-tests
      - *save_stack_lts-9_cache
      - run: stack test $STACK_ARGS