anchor.diff:        ensurePartition("/dev/vdb4", "boot sector");
         ensureNoPartition("vdb6");
         ensureNoPartition("vdc1");
  -      remount_and_check;
  +      remountAndCheck;
         ensureMountPoint("/mnt/boot");
         ensureMountPoint("/mnt/nix");
       };
  
positive.code:       ensurePartition("/dev/nixos/boot", "ext3");
        ensurePartition("/dev/nixos/swap", "swap");
        ensurePartition("/dev/nixos/root", "ext4");
        remount_and_check;
        ensureMountPoint("/mnt/boot");
      };
    '';
  
negative.code:       $machine->succeed("mountpoint $_[0]");
      }
  
      sub remountAndCheck {
        $machine->nest("Remounting partitions:", sub {
          # XXX: "findmnt -ARunl -oTARGET /mnt" seems to NOT print all mounts!
          my $getmounts_cmd = "cat /proc/mounts | cut -d' ' -f2 | grep '^/mnt'";
  