anchor.diff:    '';
   
     # Disable idn usage w/musl: https://github.com/iputils/iputils/pull/111
  -  makeFlags = [ "USE_GNUTLS=no" ] ++ stdenv.lib.optional stdenv.hostPlatform.isMusl "USE_IDN=no";
  +  makeFlags = optional stdenv.hostPlatform.isMusl "USE_IDN=no";
   
     nativeBuildInputs = [ libxslt.bin ];
  -  buildInputs = [
  -    libcap nettle
  -  ] ++ stdenv.lib.optional (!stdenv.hostPlatform.isMusl) libidn2;
  +  buildInputs = [ libcap nettle ]
  +    ++ optional (!stdenv.hostPlatform.isMusl) libidn2
  +    ++ optional withNinfod openssl; # TODO: Build with nettle
   
  -  # ninfod probably could build on cross, but the Makefile doesn't pass --host etc to the sub configure...
  -  buildFlags = "man all" + stdenv.lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) " ninfod";
  +  buildFlags = "man all" + optionalString withNinfod " ninfod";
   
  -  installPhase =
  -    ''
  -      mkdir -p $out/bin
  -      cp -p arping clockdiff ping rarpd rdisc tftpd tracepath traceroute6 $out/bin/
  -      if [ -x ninfod/ninfod ]; then
  -        cp -p ninfod/ninfod $out/bin
  -      fi
  +  installPhase = ''
  +    mkdir -p $out/bin
  +    mkdir -p $out/share/man/man8
   
  -      mkdir -p $out/share/man/man8
  -      cd doc
  -      cp -p \
  -        arping.8 clockdiff.8 ninfod.8 pg3.8 ping.8 rarpd.8 rdisc.8 tftpd.8 tracepath.8 traceroute6.8 \
  -        $out/share/man/man8
  -    '';
  +    for tool in arping clockdiff ping rarpd rdisc tftpd tracepath traceroute6; do
  +      cp $tool $out/bin/
  +      cp doc/$tool.8 $out/share/man/man8/
  +    done
   
  -  meta = with stdenv.lib; {
  +    # TODO: Requires kernel module pg3
  +    cp ipg $out/bin/
  +    cp doc/pg3.8 $out/share/man/man8/
  +  '' + optionalString withNinfod ''
  +    cp ninfod/ninfod $out/bin/
  +    cp doc/ninfod.8 $out/share/man/man8/
  +  '';
  +
  +  meta = {
       homepage = https://github.com/iputils/iputils;
       description = "A set of small useful utilities for Linux networking";
  -    license = with licenses; [ gpl2Plus bsd3 ]; # TODO: AS-IS, SUN MICROSYSTEMS license
  +    license = with licenses; [ gpl2Plus bsd3 sunAsIsLicense ];
       platforms = platforms.linux;
       maintainers = with maintainers; [ primeos lheckemann ];
     };
  
positive.code: { stdenv, fetchFromGitHub, fetchpatch
  , libxslt, docbook_xsl, docbook_xml_dtd_44
  , libcap, nettle, libidn2
  }:
  
  let
    time = "20180629";
  in
  stdenv.mkDerivation rec {
    name = "iputils-${time}";
  
    src = fetchFromGitHub {
  
negative.code:   };
  
    patches = [
      (fetchpatch {
        name = "dont-hardcode-the-location-of-xsltproc.patch";
        url = "https://github.com/iputils/iputils/commit/d0ff83e87ea9064d9215a18e93076b85f0f9e828.patch";
        sha256 = "05wrwf0bfmax69bsgzh3b40n7rvyzw097j8z5ix0xsg0kciygjvx";
  