VERSION='7.3.20'
PYVER='2.7'

# https://www.pypy.org/checksums.html
aarch64_hash=f22a1be607deeaa4f9be6bc63aae09fe4fb5b990d6a23aa4e7c5960dc5d93c96
linux32_hash=9d554c5efcb6ef80146bb82965f5d8404d6848e6f04b25c378852a095768a69c
linux64_hash=aa3bb92dbb529fa2d4920895b16d67a810b0c709207857d56cfe4a6e3b41e02a
osarm64_hash=be3ffbb243316b1ffbf63ac60d72e099d5b64702e4429eeeb18a0608fb3b8dcc
osx64_hash=9e7cf34e9d4c8d890439fcd10b09a2c0825d8709c63dd4cbf85645711bfb15b7

### 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 "${ARCH}, OS X < 10.13"
      fi
      ;;
    * )
      err_no_binary "${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_lt21'