distributable:
  url: https://hackage.haskell.org/package/dhall-{{version}}/dhall-{{version}}.tar.gz
  strip-components: 1

versions:
  url: https://hackage.haskell.org/package/dhall
  match: /dhall-\d+\.\d+\.\d+\.tar\.gz/
  strip:
    - /^dhall-/
    - /\.tar\.gz$/

dependencies:
  invisible-island.net/ncurses: ^6.4
  zlib.net: ^1.3

build:
  dependencies:
    haskell.org: '*'
    haskell.org/cabal: '*'
  script:
    - run: |
        sed -i '/unordered-containers/i\
                -- zlib 0.7.0 fails to find zlib.dylib on macOS\
                zlib                        >= 0.6.0    \&\& < 0.7 ,' \
        dhall.cabal
      if: darwin
    - cabal v2-update
    - mkdir -p {{prefix}}/bin
    - cabal v2-install $ARGS
    - install -D man/dhall.1 {{prefix}}/share/man/man1/dhall.1
  env:
    ARGS:
      - --install-method=copy
      - --installdir={{prefix}}/bin
      - --jobs={{hw.concurrency}}

provides:
  - bin/dhall

test:
  - dhall format <<< '{ = }' | grep '{=}'
  - dhall normalize <<< 'let x = 1 in x' | grep 1
  - dhall version | grep '{{version}}'