anchor.diff:          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 = ''
  
positive.code: { stdenv, fetchurl, python, zip, makeWrapper
  }:
  
  let
  
    version = "1.5.0";
  
    src = fetchurl {
      url = "https://github.com/garbas/pypi2nix/archive/v${version}.tar.gz";
      sha256 = "0s79pp7gkgyk7discnv94m6z81fd67p66rdbd4cwk1ma0qljlh2k";
    };
  
    click = fetchurl {
  
negative.code:   };
  
    requests = fetchurl {
      url = "https://pypi.python.org/packages/5b/0b/34be574b1ec997247796e5d516f3a6b6509c4e064f2885a96ed885ce7579/requests-2.12.4.tar.gz";
      sha256 = "0d5fwxmw4ibynk3imph3n4n84m0n3ib1vj339fxhkqri0qd4767d";
    };
  
  in stdenv.mkDerivation rec {
  