nix-push: Only generate and copy a NAR if it doesn't already exist

This prevents unnecessary and slow rebuilds of NARs that already exist
in the binary cache.

1 files changed, 2 insertions, 2 deletions

diff --git a/scripts/download-using-manifests.pl.in b/scripts/download-using-manifests.pl.in
index c73511f85090..ecd0b489316a 100755
--- a/scripts/download-using-manifests.pl.in
+++ b/scripts/download-using-manifests.pl.in
@@ -308,7 +308,7 @@ while (scalar @path > 0) {
         # Download the patch.
         print STDERR "  downloading patch...\n";
         my $patchPath = "$tmpDir/patch";
-        Nix::Utils::checkURL $patch->{url};
+        checkURL $patch->{url};
         system("$curl '$patch->{url}' -o $patchPath") == 0
             or die "cannot download patch `$patch->{url}'\n";
 
@@ -339,7 +339,7 @@ while (scalar @path > 0) {
         my $size = $narFile->{size} || -1;
         print LOGFILE "$$ narfile $narFile->{url} $size $v\n";
 
-        Nix::Utils::checkURL $narFile->{url};
+        checkURL $narFile->{url};
 
         my $decompressor =
             $narFile->{compressionType} eq "bzip2" ? "$Nix::Config::bzip2 -d" :