anchor.diff:            '';
         };
   
  +    virtualisation.nova.extraConfig = 
  +      mkOption {
  +        default = false;
  +        description =
  +          ''
  +            Additional text appended to <filename>nova.conf</filename>,
  +            the main Nova configuration file.
  +          '';
  +      };
  +
     };
   
   
  
positive.code:     ''
        --nodaemon
        --verbose
      '';
  
  in
  
negative.code:     environment.systemPackages = [ nova pkgs.euca2ools pkgs.novaclient ];
  
      environment.etc =
        [ { source = novaConf;
            target = "nova/nova.conf";
          }
        ];
  
  