anchor.diff:          example = literalExample ''
             {
               GRAPHITE_USERNAME = "user";
  -            GRAPHITE_PASSWORD = "pass"; 
  +            GRAPHITE_PASSWORD = "pass";
             }
           '';
         };
  
positive.code:               name: Test
          '';
          example = literalExample ''
            pushbullet_key: pushbullet_api_key 
            alerts:
              - target: stats.seatgeek.app.deal_quality.venue_info_cache.hit
                warning: .5
  
negative.code:           ExecStart = ''
              ${pkgs.python27Packages.waitress}/bin/waitress-serve \
              --host=${cfg.api.host} --port=${toString cfg.api.port} \
              graphite_api.app:app
            '';
            User = "graphite";
            Group = "graphite";
  