81 lines
1.9 KiB
Text
81 lines
1.9 KiB
Text
#! @perl@ -w
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my $binDir = $ENV{"NIX_BIN_DIR"};
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$binDir = "@bindir@" unless defined $binDir;
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if (scalar @ARGV < 1) {
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print STDERR <<EOF
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Usage: nix-copy-closure HOSTNAME [--sign] PATHS...
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EOF
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;
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exit 1;
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}
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# Get the target host.
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my $sshHost = shift @ARGV;
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my @sshOpts = split ' ', ($ENV{"NIX_SSHOPTS"} or "");
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my $sign = 0;
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my $compressor = "cat";
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my $decompressor = "cat";
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# !!! Copied from nix-pack-closure, should put this in a module.
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my %storePathsSeen;
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my @storePaths = ();
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while (@ARGV) {
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my $storePath = shift @ARGV;
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if ($storePath eq "--sign") {
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$sign = 1;
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next;
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}
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if ($storePath eq "--gzip") {
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$compressor = "gzip";
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$decompressor = "gunzip";
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next;
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}
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# $storePath might be a symlink to the store, so resolve it.
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$storePath = (`$binDir/nix-store --query --resolve '$storePath'`
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or die "cannot resolve `$storePath'");
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chomp $storePath;
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# Get the closure of this path.
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my $pid = open(READ,
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"$binDir/nix-store --query --requisites '$storePath'|") or die;
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while (<READ>) {
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chomp;
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die "bad: $_" unless /^\//;
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if (!defined $storePathsSeen{$_}) {
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push @storePaths, $_;
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$storePathsSeen{$_} = 1;
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}
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}
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close READ or die "nix-store failed: $?";
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}
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# Ask the remote host which paths are invalid.
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open(READ, "ssh @sshOpts $sshHost nix-store --check-validity --print-invalid @storePaths|");
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my @missing = ();
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while (<READ>) {
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chomp;
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print STDERR "target needs $_\n";
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push @missing, $_;
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}
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close READ or die;
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# Export the store paths and import them on the remote machine.
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if (scalar @missing > 0) {
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my $extraOpts = "";
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$extraOpts .= "--sign" if $sign == 1;
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system("nix-store --export $extraOpts @missing | $compressor | ssh @sshOpts $sshHost '$decompressor | nix-store --import'") == 0
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or die "copying store paths to remote machine failed: $?";
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}
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