anchor.diff:          };
   
         virtualisation.writableStore = true;
  -      virtualisation.pathsInNixDB = channelContents;
  +      virtualisation.pathsInNixDB = channelContents ++ [ pkgs.hello.src ];
         virtualisation.memorySize = 768;
       };
   
  -  channelContents = [ pkgs.hello.src pkgs.rlwrap ];
  +  channelContents = [ pkgs.rlwrap ];
   
   
     # The test script boots the CD, installs NixOS on an empty hard
  
positive.code:         $webserver->succeed(
              "nix-push --bzip2 --dest /tmp/channel --manifest --url-prefix http://nixos.org/channels/nixos-unstable " .
              "${toString channelContents} >&2");
        ''}
  
        # Make sure that we get a login prompt etc.
  
negative.code:         # Allow the machine to talk to the fake nixos.org.
          $machine->succeed(
              "rm /etc/hosts",
              "echo 192.168.1.1 nixos.org cache.nixos.org tarballs.nixos.org > /etc/hosts",
              "ifconfig eth1 up 192.168.1.2",
          );
  
  