anchor.diff:      meta = {
         description = "Determine MIME types of data or files using libmagic";
         license = with lib.licenses; [ artistic1 gpl1Plus ];
  +      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.FileLibMagic.x86_64-darwin
       };
     };
   
  
positive.code:     meta = {
        description = "Fast XS implementation of MaxMind DB reader";
        license = with lib.licenses; [ artistic2 ];
      };
    };
  
  
negative.code:     propagatedBuildInputs = [ pkgs.gtk2 Gtk2 ];
      meta = {
        license = lib.licenses.gpl2;
        broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.Gtk2TrayIcon.x86_64-darwin
      };
    };
  
  