anchor.diff:  
           dontInstall = false;
   
  -        installCheckPhase = ''
  -          make installcheck
  -        '';
  -
  -        postPhases = [ "installCheckPhase" ];
  +        doInstallCheck = true;
           
           lcovFilter = [ "*/boost/*" "*-tab.*" ];
   
  
positive.code:           --enable-gc
          '';
  
          installCheckPhase = ''
            make installcheck
          '';
  
          postPhases = [ "installCheckPhase" ];
        };
  
  
  
negative.code:       meta.schedulingPriority = prio;
        configureFlags = "--sysconfdir=/etc";
        debRequires = [ "curl" "libdbd-sqlite3-perl" "libsqlite3-0" "libbz2-1.0" ];
        doInstallCheck = true;
      };
  
  
  