anchor.diff: -{ stdenv, fetchFromGitHub, autoreconfHook, pkgconfig }:
  +{ stdenv, fetchFromGitHub, autoreconfHook, pkgconfig, libiconv }:
   
   stdenv.mkDerivation rec {
     name = "dosfstools-${version}";
  
positive.code:     description = "Utilities for creating and checking FAT and VFAT file systems";
      repositories.git = git://daniel-baumann.ch/git/software/dosfstools.git;
      homepage = http://www.daniel-baumann.ch/software/dosfstools/;
      platforms = stdenv.lib.platforms.linux;
    };
  }
  
negative.code:     sha256 = "1a2zn1655d5f1m6jp9vpn3bp8yfxhcmxx3mx23ai9hmxiydiykr1";
    };
  
    nativeBuildInputs = [ autoreconfHook pkgconfig ]
      ++ stdenv.lib.optional stdenv.isDarwin libiconv;
  
    configureFlags = [ "--enable-compat-symlinks" ];
  
  