anchor.diff:      metricbeat5
       packetbeat5;
   
  +  journalbeat5 = callPackage ../tools/system/journalbeat { };
  +
     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.
  
positive.code:   heartbeat = heartbeat6;
    metricbeat = metricbeat6;
    packetbeat = packetbeat6;
  
    bfr = callPackage ../tools/misc/bfr { };
  
  
negative.code:   joplin = nodePackages.joplin;
  
    joplin-desktop = callPackage ../applications/misc/joplin-desktop { };
  
    journaldriver = callPackage ../tools/misc/journaldriver { };
  
  