anchor.diff:      sha256 = "0zvm9afh1skxgdv62ylrpwyykpjhhskxj0zv7yrdf7jhfdriz0y3";
     };
   
  -  buildInputs = [ popt ] ++ libiconvOrEmpty;
  +  buildInputs = [ popt ];
   
     meta = {
       homepage = http://natspec.sourceforge.net/ ;
  
positive.code: { stdenv, fetchurl, popt, libiconvOrEmpty }:
  
  stdenv.mkDerivation rec {
    name = "libnatspec-0.2.6";
  
    src = fetchurl {
  
negative.code:     platforms = stdenv.lib.platforms.unix;
      maintainers = [ stdenv.lib.maintainers.urkud ];
    };
  } // stdenv.lib.optionalAttrs (!stdenv.isLinux) {
    NIX_CFLAGS_COMPILE = "-I${libiconv}/include";
  
    NIX_CFLAGS_LINK = "-L${libiconv}/lib -liconv";
  })
  