case "$(uname -s)" in
"Darwin" )
  PYPY_URL="https://bitbucket.org/pypy/pypy/downloads/pypy-2.0-osx64.tar.bz2#39837722da4a03ca03eda187aafa13bb"
  ;;
"Linux" )
  case "$(uname -m)" in
  "armel" )
    PYPY_URL="https://bitbucket.org/pypy/pypy/downloads/pypy-2.0-alpha-arm-armel.tar.bz2#b9c36b99296c85a590c3e480b05d5a13"
  ;;
  "armhf" )
    PYPY_URL="https://bitbucket.org/pypy/pypy/downloads/pypy-2.0-alpha-arm-armhf.tar.bz2#2565ce68b4032eb306d998e722495694"
  ;;
  "i386" | "i486" | "i586" | "i686" | "i786" )
    PYPY_URL="https://bitbucket.org/pypy/pypy/downloads/pypy-2.0-linux.tar.bz2#267c46ed8c591da19b6091aa90fa9acf"
  ;;
  "x86_64" )
    PYPY_URL="https://bitbucket.org/pypy/pypy/downloads/pypy-2.0-linux64.tar.bz2#2fe3298ac9354fbdb57a38472936b823"
  esac
  ;;
"CYGWIN"* | "MINGW"* )
  PYPY_URL="https://bitbucket.org/pypy/pypy/downloads/pypy-2.0-win32.zip#f0d051c2b612b64dff496a6c0f3654fb"
  ;;
esac

if [ -z "$PYPY_URL" ]; then
  echo "pypy is not available." 1>&2
  exit 1
else
  install_package "pypy-2.0" "$PYPY_URL" pypy
  install_package "distribute-0.6.38" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.38.tar.gz#a0bc8fdb8b7b36234dcb1ff3d1fc702d" python
  install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
fi