anchor.diff:      "DeducerText"
       "Demerelate"
       "detrendeR"
  -    "dgmb"
       "dpa"
  -    "DSpat"
       "dynamicGraph"
       "dynBiplotGUI"
       "EasyqpcR"
  
positive.code:     "PredictABEL"
      "prefmod"
      "PrevMap"
      "ProbForecastGOP"
      "r4ss"
      "RandomFields"
      "rareNMtests"
  
negative.code:     Cardinal = [ pkgs.which ];
      chebpol = [ pkgs.fftw ];
      ChemmineOB = [ pkgs.openbabel pkgs.pkg-config ];
      curl = [ pkgs.curl.dev ];
      data_table = [pkgs.zlib.dev] ++ lib.optional stdenv.isDarwin pkgs.llvmPackages.openmp;
      devEMF = [ pkgs.xorg.libXft.dev pkgs.x11 ];
  