anchor.diff: -{ fetchurl, stdenv }:
  +{ fetchurl, stdenv, elf-header }:
   
   stdenv.mkDerivation rec {
     name = "paxctl-${version}";
  
positive.code:     description = "A tool for controlling PaX flags on a per binary basis";
      homepage    = "https://pax.grsecurity.net";
      license     = licenses.gpl2;
      platforms   = platforms.linux;
      maintainers = with maintainers; [ thoughtpolice ];
    };
  }
  
negative.code:     sha256 = "0biw882fp1lmgs6kpxznp1v6758r7dg9x8iv5a06k0b82bcdsc53";
    };
  
    # TODO Always do first way next mass rebuild.
    buildInputs = stdenv.lib.optional
      (!stdenv.hostPlatform.isLinux || !stdenv.buildPlatform.isLinux)
      elf-header;
  
    # TODO Always do first way next mass rebuild.
    preBuild = if !stdenv.hostPlatform.isLinux || !stdenv.buildPlatform.isLinux then ''
      sed -i Makefile \
        -e 's|--owner 0 --group 0||g' \
        -e '/CC:=gcc/d'
    '' else ''
      sed "s|--owner 0 --group 0||g" -i Makefile
    '';
  
  