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