···

       
108
       
108
       
 
       
      $machine->waitUntilSucceeds("cat /proc/swaps | grep -q /dev");

     

       
109
       
109
       
 
       


     

       
110
       
110
       
 
       
      # Check whether the channel works.

     

       
111
       
111
       
-
       
      $machine->succeed("nix-env -iA coreutils >&2");

     

       
111
       
111
       
+
       
      $machine->succeed("nix-env -iA nixos.coreutils >&2");

     

       
112
       
112
       
 
       
      $machine->succeed("type -tP ls | tee /dev/stderr") =~ /.nix-profile/

     

       
113
       
113
       
 
       
          or die "nix-env failed";

     

       
114
       
114