anchor.diff:      meta = {
         description = "Date and time regexps";
         homepage = "https://github.com/manwar/Regexp-Common-time";
  -      license = with lib.licenses; [ free ];
  +      license = with lib.licenses; [ artistic2 mit bsd3 ];
         maintainers = [ maintainers.artturin ];
       };
     };
  
positive.code:     nativeBuildInputs = [ pkgs.ld-is-cc-hook ];
      meta = {
        description = "An Encode::Encoding subclass that detects the encoding of data";
        license = with lib.licenses; [ free ];
      };
    };
  
  
negative.code:     meta = {
        description = "Module to align text";
        homepage = "https://metacpan.org/release/Text-Aligner";
        license = with lib.licenses; [ isc ];
      };
    };
  
  