anchor.diff:      };
   
       systemd.tmpfiles.rules = [
  -      "d /var/run/munin 0755 munin munin -"
  +      "d /run/munin 0755 munin munin -"
         "d /var/log/munin 0755 munin munin -"
         "d /var/www/munin 0755 munin munin -"
         "d /var/lib/munin 0755 munin munin -"
  
positive.code: 
  # TODO: support fastcgi
  # http://munin-monitoring.org/wiki/CgiHowto2
  # spawn-fcgi -s /var/run/munin/fastcgi-graph.sock -U www-data   -u munin -g munin /usr/lib/munin/cgi/munin-cgi-graph
  # spawn-fcgi -s /var/run/munin/fastcgi-html.sock  -U www-data   -u munin -g munin /usr/lib/munin/cgi/munin-cgi-html
  # https://paste.sh/vofcctHP#-KbDSXVeWoifYncZmLfZzgum
  # nginx http://munin.readthedocs.org/en/latest/example/webserver/nginx.html
  
  
negative.code:       wantedBy = [ "multi-user.target" ];
        path = with pkgs; [ munin smartmontools "/run/current-system/sw" "/run/wrappers" ];
        environment.MUNIN_LIBDIR = "${pkgs.munin}/lib";
        environment.MUNIN_PLUGSTATE = "/run/munin";
        environment.MUNIN_LOGDIR = "/var/log/munin";
        preStart = ''
          echo "updating munin plugins..."
  