VERSION='7.3.9'
PYVER='3.7'

# https://www.pypy.org/checksums.html
aarch64_hash=dfc62f2c453fb851d10a1879c6e75c31ffebbf2a44d181bb06fcac4750d023fc
linux32_hash=3398cece0167b81baa219c9cd54a549443d8c0a6b553ec8ec13236281e0d86cd
linux64_hash=c58195124d807ecc527499ee19bc511ed753f4f2e418203ca51bc7e3b124d5d1
osx64_hash=12d92f578a200d50959e55074b20f29f93c538943e9a6e6522df1a1cc9cef542
s390x_hash=fcab3b9e110379948217cf592229542f53c33bfe881006f95ce30ac815a6df48
win64_hash=8acb184b48fb3c854de0662e4d23a66b90e73b1ab73a86695022c12c745d8b00

### end of manual settings - following lines same for every download

function err_no_binary {
    local archmsg="${1}"
    local ver="pypy${PYVER}-v${VERSION}-src"
    local url="https://downloads.python.org/pypy/${ver}.tar.bz2"
    { echo
      colorize 1 "ERROR"
      echo ": The binary distribution of PyPy is not available for ${archmsg}."
      echo "try '${url}' to build from source."
      echo
    } >&2
    exit 1
}

function pypy_pkg_data {
    # pypy architecture tag
    local ARCH="${1}"

    # defaults
    local cmd='install_package'  # use bz2
    local pkg="${ARCH}" # assume matches
    local ext='tar.bz2' # windows is always diff...
    local hash='' # undefined

    # select the hash, fix pkg if not match ARCH, windows has ext of zip
    case "${ARCH}" in
    'linux-aarch64' )
      hash="${aarch64_hash}"
      pkg='aarch64'
      ;;
    'linux' )
      hash="${linux32_hash}"
      pkg='linux32'
      ;;
    'linux64' )
      hash="${linux64_hash}"
      ;;
    'osx64' )
      if require_osx_version "10.13"; then
        hash="${osx64_hash}"
      else
        err_no_binary "${ARCH}, OS X < 10.13"
      fi
      ;;
    's390x' )
      hash="${s390x_hash}"
      ;;
    'win64' )
      hash="${win64_hash}"
      cmd='install_zip'  # diff command
      ext='zip' # zip rather than bz2
      ;;
    * )
      err_no_binary "${ARCH}"
      ;;
    esac

    local basever="pypy${PYVER}-v${VERSION}"
    local baseurl="https://downloads.python.org/pypy/${basever}"

    # result - command, package dir, url+hash
    echo "${cmd}" "${basever}-${pkg}" "${baseurl}-${pkg}.${ext}#${hash}"
}

# determine command, package directory, url+hash
declare -a pd="$(pypy_pkg_data "$(pypy_architecture 2>/dev/null || true)")"

# install
${pd[0]} "${pd[1]}" "${pd[2]}" 'pypy' "verify_py${PYVER//./}" 'ensurepip'