anchor.diff:      propagatedBuildInputs = [ colorspace ];
     };
   
  -  pamr = buildRPackage rec {
  +  pamr = buildRPackage {
       name = "pamr-1.54.1";
       src = fetchurl {
         url = "mirror://cran/src/contrib/pamr_1.54.1.tar.gz";
  
positive.code:     propagatedBuildInputs = [ proto ];
    };
  
    labeling = buildRPackage rec {
      name = "labeling-0.2";
      src = fetchurl {
        url = "mirror://cran/src/contrib/labeling_0.2.tar.gz";
  
negative.code: 
    inherit (stdenv.lib) maintainers;
  
    abind = buildRPackage {
      name = "abind-1.4-0";
      src = fetchurl {
        url = "mirror://cran/src/contrib/abind_1.4-0.tar.gz";
  