diff options
Diffstat (limited to 'perl/lib/Nix/CopyClosure.pm')
| -rw-r--r-- | perl/lib/Nix/CopyClosure.pm | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/perl/lib/Nix/CopyClosure.pm b/perl/lib/Nix/CopyClosure.pm index 79c6dfccc..931057e9f 100644 --- a/perl/lib/Nix/CopyClosure.pm +++ b/perl/lib/Nix/CopyClosure.pm @@ -6,7 +6,8 @@ use Nix::Store; sub copyTo { - my ($sshHost, $sshOpts, $storePaths, $compressor, $decompressor, $includeOutputs, $dryRun, $sign, $progressViewer) = @_; + my ($sshHost, $sshOpts, $storePaths, $compressor, $decompressor, + $includeOutputs, $dryRun, $sign, $progressViewer, $useSubstitutes) = @_; $compressor = "$compressor |" if $compressor ne ""; $decompressor = "$decompressor |" if $decompressor ne ""; @@ -16,6 +17,12 @@ sub copyTo { my @closure = reverse(topoSortPaths(computeFSClosure(0, $includeOutputs, map { followLinksToStorePath $_ } @{$storePaths}))); + # Optionally use substitutes on the remote host. + if (!$dryRun && $useSubstitutes) { + system "ssh $sshHost @{$sshOpts} nix-store -r --ignore-unknown @closure"; + # Ignore exit status because this is just an optimisation. + } + # Ask the remote host which paths are invalid. Because of limits # to the command line length, do this in chunks. Eventually, # we'll want to use ‘--from-stdin’, but we can't rely on the |