anchor.diff:    };
   
     jedi = buildPythonPackage (rec {
  -    name = "jedi-0.7.0";
  +    name = "jedi-0.8.0-final0";
   
       src = fetchurl {
         url = "http://pypi.python.org/packages/source/j/jedi/${name}.tar.gz";
  -      sha256 = "1afs06k1j6raasdps1fvdqywyk3if1qchdpl4mivnliqzxqd1w01";
  +      sha256 = "0jnhwh0b1hy5cssi3n5a4j7z9pgpcckyv5s52ba4jnq5bwgdpbcf";
       };
   
       meta = {
  
positive.code: 
  
    alot = buildPythonPackage rec {
      rev = "fa10bfc2de105da819c8e11e913a44c3c1ac60a4";
      name = "alot-0.3.5_${rev}";
  
      src = fetchurl {
        url = "https://github.com/pazz/alot/tarball/${rev}";
        name = "${name}.tar.bz";
        sha256 = "0zd4jiwxqb7m672xkr5jcqkfpk9jx1kmkllyvjjvswkgjjqdrhax";
      };
  
      # error: invalid command 'test'
  
negative.code:   });
  
    tweepy = buildPythonPackage (rec {
      name = "tweepy-2.3.0";
  
      src = fetchurl {
        url = "http://pypi.python.org/packages/source/t/tweepy/${name}.tar.gz";
        sha256 = "0wcj5g21brcqr1g7m4by4rs72lfiib4scg19qynn2wz1x77jyrzp";
      };
  
      meta = {
  