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-rw-r--r--perl/lib/Nix/SSH.pm6
-rwxr-xr-xscripts/build-remote.pl.in2
2 files changed, 5 insertions, 3 deletions
diff --git a/perl/lib/Nix/SSH.pm b/perl/lib/Nix/SSH.pm
index c8792043c20c..84bff5c7850c 100644
--- a/perl/lib/Nix/SSH.pm
+++ b/perl/lib/Nix/SSH.pm
@@ -107,11 +107,13 @@ sub writeStrings {
 
 
 sub connectToRemoteNix {
-    my ($sshHost, $sshOpts) = @_;
+    my ($sshHost, $sshOpts, $extraFlags) = @_;
+
+    $extraFlags ||= "";
 
     # Start ‘nix-store --serve’ on the remote host.
     my ($from, $to);
-    my $pid = open2($from, $to, "ssh $sshHost @{$sshOpts} nix-store --serve --write");
+    my $pid = open2($from, $to, "ssh $sshHost @{$sshOpts} nix-store --serve --write $extraFlags");
 
     # Do the handshake.
     my $SERVE_MAGIC_1 = 0x390c9deb; # FIXME
diff --git a/scripts/build-remote.pl.in b/scripts/build-remote.pl.in
index 687b0e131066..c2f1fecd875a 100755
--- a/scripts/build-remote.pl.in
+++ b/scripts/build-remote.pl.in
@@ -197,7 +197,7 @@ REQ: while (1) {
         @sshOpts = ("-i", $machine->{sshKeys}, "-x");
         $hostName = $machine->{hostName};
         eval {
-            ($from, $to) = connectToRemoteNix($hostName, \@sshOpts);
+            ($from, $to) = connectToRemoteNix($hostName, \@sshOpts, "2>&4");
             # FIXME: check if builds are inhibited.
         };
         last REQ unless $@;