anchor.diff:  
   
     alot = buildPythonPackage rec {
  -    rev = "0711cf8efaf1a4cca24617c3406210a415006457";
  -    name = "alot-0.3.4_${rev}";
  +    rev = "fa10bfc2de105da819c8e11e913a44c3c1ac60a4";
  +    name = "alot-0.3.5_${rev}";
   
       src = fetchurl {
         url = "https://github.com/pazz/alot/tarball/${rev}";
         name = "${name}.tar.bz";
  -      sha256 = "1rxkx9cjajsv9x1dl4xp1r3vr0kb66sglxaqzjiwaknqzahmmji5";
  +      sha256 = "0zd4jiwxqb7m672xkr5jcqkfpk9jx1kmkllyvjjvswkgjjqdrhax";
       };
   
       # error: invalid command 'test'
  
positive.code: 
  
    afew = buildPythonPackage rec {
      rev = "6bb3915636aaf86f046a017ffffd9a4ef395e199";
      name = "afew-1.0_${rev}";
  
      src = fetchurl {
        url = "https://github.com/teythoon/afew/tarball/${rev}";
        name = "${name}.tar.bz";
        sha256 = "74926d9ddfa69534cfbd08a82f0acccab2c649558062654d5d2ff2999d201384";
      };
  
      propagatedBuildInputs = [ pythonPackages.notmuch pkgs.dbacl ];
  
      # error: invalid command 'test'
      doCheck = false;
  
      postInstall = ''
        wrapProgram $out/bin/afew \
          --prefix LD_LIBRARY_PATH : ${pkgs.notmuch}/lib
      '';
  
negative.code:     };
    };
  
    subprocess32 = buildPythonPackage rec {
      name = "subprocess32-3.2.5rc1";
  
      src = fetchurl {
        url = "https://pypi.python.org/packages/source/s/subprocess32/${name}.tar.gz";
        md5 = "f5f46106368be6336b54af95d048fea9";
      };
  
      doCheck = false;
  
      meta = {
        homepage = "https://pypi.python.org/pypi/subprocess32";
        description = "Backport of the subprocess module from Python 3.2.5 for use on 2.x.";
        maintainers = [ stdenv.lib.maintainers.garbas ];
      };
    };
  
  
    sphinx = buildPythonPackage (rec {
      name = "Sphinx-1.1.3";
  