anchor.diff:  
       propagatedBuildInputs = with self; [ unittest2 six ];
     };
  +
  +  logilab-constraint = buildPythonPackage rec {
  +    name = "logilab-constraint-${version}";
  +    version = "0.6.0";
  +
  +    src = pkgs.fetchurl {
  +      url = "https://pypi.python.org/packages/source/l/logilab-constraint/${name}.tar.gz";
  +      sha256 = "1n0xim4ij1n4yvyqqvyc0wllhjs22szglsd5av0j8k2qmck4njcg";
  +    };
  +
  +    propagatedBuildInputs = with self; [
  +      logilab_common six
  +    ];
  +
  +    meta = with stdenv.lib; {
  +      description = "logilab-database provides some classes to make unified access to different";
  +      homepage = "http://www.logilab.org/project/logilab-database";
  +    };
  +  };
  +
   
     lxml = buildPythonPackage ( rec {
       name = "lxml-3.3.6";
  
positive.code:   });
  
  
    limnoria = buildPythonPackage (rec {
      name = "limnoria-20130327";
  
      src = pkgs.fetchurl {
        url = https://pypi.python.org/packages/source/l/limnoria/limnoria-2013-06-01T10:32:51+0200.tar.gz;
        name = "limnoria-2013-06-01.tar.gz";
        sha256 = "1i8q9zzf43sr3n1q4h6h1z8nz31g4aa8dq94ywvfbh7hklmchq6n";
      };
  
      buildInputs = with self; [ pkgs.git ];
      propagatedBuildInputs = with self; [ modules.sqlite3 ];
  
  
negative.code:     };
  
      doCheck = false;
      buildInputs = [ self.testfixtures ];
      propagatedBuildInputs = with self; [ cornice mozsvc pybrowserid tokenlib ];
  
      meta = {
        platforms = platforms.all;
      };
    };
  
    testfixtures = buildPythonPackage rec {
      name = "testfixtures-${version}";
      version = "4.5.0";
  
      src = pkgs.fetchurl {
        url = "https://pypi.python.org/packages/source/t/testfixtures/testfixtures-${version}.tar.gz";
        sha256 = "0my8zq9d27mc7j78pz9971cn5wz6zi4vxlqa50szr2vq9j2xxkll";
      };
  
  
      meta = with stdenv.lib; {
        homepage = "https://github.com/Simplistix/testfixtures";
      };
    };
  
  