VERSION='7.3.9'
PYVER='2.7'

# https://www.pypy.org/checksums.html
aarch64_hash=aff4e4dbab53448f662cd01acb2251571d60f836d2f48382a7d8da54ca5b3442
linux32_hash=bbf4e7343d43c8217099a9bffeed6a1781f4b5a3e186ed1a0befca65e647aeb9
linux64_hash=172a928b0096a7e00b7d58f523f57300c35c3de7f822491e2a7bc845375c23f8
osx64_hash=77314f5a6b2cc35d24e6f952bef89f5da612b90e4127a8034aed708d9ae483c4
s390x_hash=62481dd3c6472393ca05eb3a0880c96e4f5921747157607dbaa772a7369cab77
win64_hash=ca7b0f4c576995b388cfb4c796e3f6f20b037e5314571bf267daa068a3a2af31

### 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'