anchor.diff:    heartbeat = heartbeat6;
     metricbeat = metricbeat6;
     packetbeat = packetbeat6;
  +  journalbeat = journalbeat6;
   
     bfr = callPackage ../tools/misc/bfr { };
   
  
positive.code:     metricbeat5
      packetbeat5;
  
    inherit (callPackages ../misc/logging/beats/6.x.nix {
      # XXX: this is failing with Go 1.12. Error is related to cgo, an
      # update to this package might fix it.
  
negative.code:   joplin = nodePackages.joplin;
  
    joplin-desktop = callPackage ../applications/misc/joplin-desktop { };
  
    journaldriver = callPackage ../tools/misc/journaldriver { };
  
  