diff -rc nix-0.10pre5896/scripts/download-using-manifests.pl.in nix-0.10pre5896.new/scripts/download-using-manifests.pl.in
*** nix-0.10pre5896/scripts/download-using-manifests.pl.in	2006-07-24 20:39:47.000000000 +0200
--- nix-0.10pre5896.new/scripts/download-using-manifests.pl.in	2006-08-02 21:45:53.000000000 +0200
***************
*** 9,14 ****
--- 9,15 ----
  
  open LOGFILE, ">>$logFile" or die "cannot open log file $logFile";
  
+ delete $ENV{"NIX_ROOT"};
  
  # Create a temporary directory.
  my $tmpDir;
diff -rc nix-0.10pre5896/scripts/nix-prefetch-url.in nix-0.10pre5896.new/scripts/nix-prefetch-url.in
*** nix-0.10pre5896/scripts/nix-prefetch-url.in	2006-07-24 20:39:47.000000000 +0200
--- nix-0.10pre5896.new/scripts/nix-prefetch-url.in	2006-08-02 21:13:46.000000000 +0200
***************
*** 3,8 ****
--- 3,11 ----
  url=$1
  expHash=$2
  
+ # to prevent doing more than 1 chroot
+ unset NIX_ROOT
+ 
  hashType=$NIX_HASH_ALGO
  if test -z "$hashType"; then
      hashType=md5