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nix-copy-closure: Add flag ‘--use-substitutes’

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This commit is contained in:
Eelco Dolstra 2012-11-23 16:20:16 +01:00
parent 9de6bc5d05
commit a3d6585c5a
4 changed files with 48 additions and 17 deletions
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9
perl/lib/Nix/CopyClosure.pm
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@ -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