anchor.diff:            one.wait_until_succeeds(
                 total_hits("Supercalifragilisticexpialidocious") + " | grep -v 0"
             )
  -    '' + pkgs.lib.optionalString (!elasticsearchGe7) ''
  +
         with subtest("Elasticsearch-curator works"):
             one.systemctl("stop logstash")
             one.systemctl("start elasticsearch-curator")
  
positive.code:               };
  
                elasticsearch-curator = {
                  # The current version of curator (5.6) doesn't support elasticsearch >= 7.0.0.
                  enable = !elasticsearchGe7;
                  actionYAML = ''
                  ---
                  actions:
  
negative.code:   esUrl = "http://localhost:9200";
  
    mkElkTest = name : elk :
      import ./make-test-python.nix ({
      inherit name;
      meta = with pkgs.stdenv.lib.maintainers; {
        maintainers = [ eelco offline basvandijk ];
  