anchor.diff:      click
       requests
     ];
  -  buildInputs = [ python zip makeWrapper ];
  +  buildInputs = [ python zip makeWrapper nix.out nix-prefetch-scripts ];
     sourceRoot = ".";
   
     postUnpack = ''
  
positive.code:   };
  
    requests = fetchurl {
      url = "https://pypi.python.org/packages/2e/ad/e627446492cc374c284e82381215dcd9a0a87c4f6e90e9789afefe6da0ad/requests-2.11.1.tar.gz";
      sha256 = "0cx1w7m4cpslxz9jljxv0l9892ygrrckkiwpp2hangr8b01rikss";
    };
  
  in stdenv.mkDerivation rec {
  
negative.code:         mv pypi2nix*/src/pypi2nix       $out/pkgs/pypi2nix
        fi
      fi
    '';
  
    patchPhase = ''
      sed -i -e "s|default='nix-shell',|default='${nix.out}/bin/nix-shell',|" $out/pkgs/pypi2nix/cli.py
      sed -i -e "s|nix-prefetch-git|${nix-prefetch-scripts}/bin/nix-prefetch-git|" $out/pkgs/pypi2nix/stage2.py
    '';
  
    commonPhase = ''
  