VERSION='7.3.9'
PYVER='3.8'

# https://www.pypy.org/checksums.html
aarch64_hash=5e124455e207425e80731dff317f0432fa0aba1f025845ffca813770e2447e32
linux32_hash=4b261516c6c59078ab0c8bd7207327a1b97057b4ec1714ed5e79a026f9efd492
linux64_hash=08be25ec82fc5d23b78563eda144923517daba481a90af0ace7a047c9c9a3c34
osx64_hash=91a5c2c1facd5a4931a8682b7d792f7cf4f2ba25cd2e7e44e982139a6d5e4840
s390x_hash=c6177a0016c9145c7b99fddb5d74cc2e518ccdb216a6deb51ef6a377510cc930
win64_hash=05022baaa55db2b60880f2422312d9e4025e1267303ac57f33e8253559d0be88

### 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'