anchor.diff:      fftw = [ pkgs.pkgconfig ];
       geoCount = [ pkgs.pkgconfig ];
       gdtools = [ pkgs.pkgconfig ];
  -    JuniperKernel = lib.optionals stdenv.isDarwin [ pkgs.binutils.bintools ];
  +    JuniperKernel = lib.optionals stdenv.isDarwin [ pkgs.darwin.binutils ];
       kza = [ pkgs.pkgconfig ];
       magick = [ pkgs.pkgconfig ];
       mwaved = [ pkgs.pkgconfig ];
  
positive.code:     pbdZMQ = old.pbdZMQ.overrideDerivation (attrs: {
        postPatch = lib.optionalString stdenv.isDarwin ''
          for file in R/*.{r,r.in}; do
              sed -i 's#system("which \(\w\+\)"[^)]*)#"${pkgs.binutils.bintools}/bin/\1"#g' $file
          done
        '';
      });
  
negative.code:     nat = [ pkgs.which ];
      nat_nblast = [ pkgs.which ];
      nat_templatebrains = [ pkgs.which ];
      pbdZMQ = lib.optionals stdenv.isDarwin [ pkgs.darwin.binutils ];
      RMark = [ pkgs.which ];
      RPushbullet = [ pkgs.which ];
      qtpaint = [ pkgs.cmake ];
  