#! @perl@ -w @perlFlags@ use strict; use Nix::SSH; use Nix::Config; use Nix::Store; use Nix::CopyClosure; use List::Util qw(sum); binmode STDERR, ":encoding(utf8)"; if (scalar @ARGV < 1) { print STDERR <<EOF Usage: nix-copy-closure [--from | --to] HOSTNAME [--sign] [--gzip] [--bzip2] [--xz] PATHS... EOF ; exit 1; } # Get the target host. my $sshHost; my $sign = 0; my $toMode = 1; my $includeOutputs = 0; my $dryRun = 0; my $useSubstitutes = 0; # !!! Copied from nix-pack-closure, should put this in a module. my @storePaths = (); while (@ARGV) { my $arg = shift @ARGV; if ($arg eq "--help") { exec "man nix-copy-closure" or die; } elsif ($arg eq "--sign") { $sign = 1; } elsif ($arg eq "--gzip" || $arg eq "--bzip2" || $arg eq "--xz") { warn "$0: ‘$arg’ is not implemented\n" if $arg ne "--gzip"; push @globalSshOpts, "-C"; } elsif ($arg eq "--from") { $toMode = 0; } elsif ($arg eq "--to") { $toMode = 1; } elsif ($arg eq "--include-outputs") { $includeOutputs = 1; } elsif ($arg eq "--show-progress") { warn "$0: ‘$arg’ is not implemented\n"; } elsif ($arg eq "--dry-run") { $dryRun = 1; } elsif ($arg eq "--use-substitutes" || $arg eq "-s") { $useSubstitutes = 1; } elsif (!defined $sshHost) { $sshHost = $arg; } else { push @storePaths, $arg; } } die "$0: you did not specify a host name\n" unless defined $sshHost; if ($toMode) { # Copy TO the remote machine. Nix::CopyClosure::copyTo( $sshHost, [ @storePaths ], $includeOutputs, $dryRun, $sign, $useSubstitutes); } else { # Copy FROM the remote machine. my ($from, $to) = connectToRemoteNix($sshHost, []); # Query the closure of the given store paths on the remote # machine. Paths are assumed to be store paths; there is no # resolution (following of symlinks). syswrite($to, pack("L<x4L<x4", 7, $includeOutputs ? 1 : 0)) or die; writeStrings(\@storePaths, $to); my @missing = grep { !isValidPath($_) } readStrings($from); # Export the store paths on the remote machine and import them locally. if (scalar @missing > 0) { print STDERR "copying ", scalar @missing, " missing paths from ‘$sshHost’...\n"; writeInt(5, $to); # == cmdExportPaths writeInt($sign ? 1 : 0, $to); writeStrings(\@missing, $to); importPaths(fileno($from)); } }