anchor.diff:      runHook 'postInstall'
     '';
   
  -  enableParallelBuilding = false;
  +  parallelBuild = false;
   
     meta = with stdenv.lib; {
       description = "Network monitoring tools including ping and ping6";
  
positive.code:   installPhase = ''
      runHook 'preInstall'
    '' +
      /* iputils does not provide a make install target */ ''
      install -vDm 755 ping $out/bin/ping
      install -vDm 755 ping6 $out/bin/ping6
      install -vDm 755 tracepath $out/bin/tracepath
  
negative.code:   ];
  
    postPatch =
    /* Fix expected filename */ ''
      sed -i doc/Makefile \
        -e 's/sgmlspl/sgmlspl.pl/'
    '';
  