anchor.diff:            fi
           done
         ''}
  -      
  +
         patchShebangs .
     '';
  -  
  +
     buildInputs = [ unzip file ];
   }
  
positive.code: {stdenv, stdenv_32bit, fetchurl, unzip, zlib_32bit, ncurses_32bit, file, zlib, ncurses}:
  
  stdenv.mkDerivation rec {
    version = "26.0.1";
    name = "android-build-tools-r${version}";
    src = if (stdenv.system == "i686-linux" || stdenv.system == "x86_64-linux")
      then fetchurl {
        url = "https://dl.google.com/android/repository/build-tools_r${version}-linux.zip";
        sha256 = "1sp0ir1d88ffw0gz78zlbvnxalz02fsaxwdcvjfynanylwjpyqf8";
      }
      else if stdenv.system == "x86_64-darwin" then fetchurl {
        url = "https://dl.google.com/android/repository/build-tools_r${version}-macosx.zip";
        sha256 = "1ns6c8361l18s3a5x0jc2m3qr06glsb6ak7csrrw6dkzlv8cj5dk";
      }
      else throw "System ${stdenv.system} not supported!";
  
  
negative.code:     cd $out/build-tools
      unzip $src
      mv android-* ${version}
  
      ${stdenv.lib.optionalString (stdenv.system == "i686-linux" || stdenv.system == "x86_64-linux")
        ''
          cd ${version}
  