VERSION='7.3.10'
PYVER='3.9'

# https://www.pypy.org/checksums.html
aarch64_hash=657a04fd9a5a992a2f116a9e7e9132ea0c578721f59139c9fb2083775f71e514
linux32_hash=b6db59613b9a1c0c1ab87bc103f52ee95193423882dc8a848b68850b8ba59cc5
linux64_hash=95cf99406179460d63ddbfe1ec870f889d05f7767ce81cef14b88a3a9e127266
osarm64_hash=e2a6bec7408e6497c7de8165aa4a1b15e2416aec4a72f2578f793fb06859ccba
osx64_hash=f90c8619b41e68ec9ffd7d5e913fe02e60843da43d3735b1c1bc75bcfe638d97
s390x_hash=ca6525a540cf0c682d1592ae35d3fbc97559a97260e4b789255cc76dde7a14f0

### 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'
    local hash='' # undefined

    # select the hash, fix pkg if not match ARCH
    case "${ARCH}" in
    'linux-aarch64' )
      hash="${aarch64_hash}"
      pkg='aarch64'
      ;;
    'linux' )
      hash="${linux32_hash}"
      pkg='linux32'
      ;;
    'linux64' )
      hash="${linux64_hash}"
      ;;
    'osarm64' )
      hash="${osarm64_hash}"
      pkg='macos_arm64'
      ;;
    'osx64' )
      if require_osx_version "10.13"; then
        hash="${osx64_hash}"
        pkg='macos_x86_64'
      else
        err_no_binary "${ARCH}, OS X < 10.13"
      fi
      ;;
    's390x' )
      hash="${s390x_hash}"
      ;;
    * )
      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'