anchor.diff:        sha256 = "0fg4l48c7n59n5j3b1dgcsr927xzylkfny4a6pnk6z0pq2bhvl9z";
       };
   
  -    buildInputs = [ bzip2 openssl pkgconfig pythonFull libffi ncurses expat sqlite tk tcl x11 libX11 ]
  +    buildInputs = [ bzip2 openssl pkgconfig pythonFull libffi ncurses expat sqlite tk tcl x11 libX11 makeWrapper ]
         ++ stdenv.lib.optional (stdenv ? gcc && stdenv.gcc.libc != null) stdenv.gcc.libc
         ++ stdenv.lib.optional zlibSupport zlib;
   
  
positive.code:     enableParallelBuilding = true;
  
      meta = with stdenv.lib; {
        homepage = "http://pypy.org/";
        description = "Fast, compliant alternative implementation of the Python language (2.7.3)";
        license = licenses.mit;
        platforms = platforms.linux;
  
negative.code:        # verify cffi modules
         $out/bin/pypy -c "import Tkinter;import sqlite3"
  
         # make sure pypy finds sqlite3 library
         wrapProgram "$out/bin/pypy" \
           --set LD_LIBRARY_PATH "${LD_LIBRARY_PATH}" \
           --set LIBRARY_PATH "${LIBRARY_PATH}"
      '';
  
      passthru = {
  