anchor.diff:      igraph = [ pkgs.gmp pkgs.libxml2.dev ];
       JavaGD = [ pkgs.jdk ];
       jpeg = [ pkgs.libjpeg.dev ];
  +    jqr = [ pkgs.jq.dev ];
       KFKSDS = [ pkgs.gsl_1 ];
       kza = [ pkgs.fftw.dev ];
       libamtrack = [ pkgs.gsl_1 ];
  
positive.code:       '';
      });
  
      pbdZMQ = old.pbdZMQ.overrideDerivation (attrs: {
        postPatch = lib.optionalString stdenv.isDarwin ''
          for file in R/*.{r,r.in}; do
  
negative.code:     geoCount = [ pkgs.pkgconfig ];
      gdtools = [ pkgs.pkgconfig ];
      JuniperKernel = lib.optionals stdenv.isDarwin [ pkgs.darwin.binutils ];
      jqr = [ pkgs.jq.lib ];
      kza = [ pkgs.pkgconfig ];
      magick = [ pkgs.pkgconfig ];
      mwaved = [ pkgs.pkgconfig ];
  