anchor.diff:        maintainers = with maintainers; [ fridh ];
       };
     };
  -  
  +
     lockfile = buildPythonPackage rec {
       name = "lockfile-0.9.1";
   
  
positive.code:   numba = buildPythonPackage rec {
      version = "0.21.0";
      name = "numba-${version}";
      
      src = pkgs.fetchurl {
        url = "https://pypi.python.org/packages/source/n/numba/${name}.tar.gz";
        sha256 = "1806d2f6ad49ad891e9ac6fed0cc0b0489cbfcd9ba2dc81081c1c30091e77604";
      };
      
      propagatedBuildInputs = with self; [numpy llvmlite argparse] ++ optional (!isPy3k) funcsigs ++ optional (isPy27 || isPy33) singledispatch;
      # Future work: add Cuda support.
      #propagatedBuildInputs = with self; [numpy llvmlite argparse pkgs.cudatoolkit6];
  
negative.code:     checkPhase = ''
        ${self.python.executable} runtests.py
      '';
  
      meta = {
        description = "A lightweight LLVM python binding for writing JIT compilers";
        homepage = "http://llvmlite.pydata.org/";
  