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{ config, pkgs, lib, ... }:
with lib;
{
options.vuizvui.user.aszlig.programs.taalo-build = {
enable = mkEnableOption "aszlig's build helper for remote builds";
};
config = mkIf config.vuizvui.user.aszlig.programs.taalo-build.enable {
environment.systemPackages = singleton (pkgs.writeScriptBin "taalo-build" ''
#!${pkgs.perl}/bin/perl -I${pkgs.nix}/lib/perl5/site_perl
use strict;
use Nix::CopyClosure;
use Nix::SSH;
use IPC::Open2;
binmode STDERR, ":encoding(utf8)";
open my $instantiate, "-|", "nix-instantiate", @ARGV
or die "Failed to run nix-instantiate";
my $to_realize = join "", <$instantiate>;
close $instantiate or exit $? >> 8;
chomp $to_realize;
my ($from, $to);
my $dest = 'nix-remote-build@taalo.headcounter.org';
my $cmd = "exec ssh $dest -C -- nix-store --serve --write";
my $pid = open2($from, $to, $cmd);
# Do the handshake.
my $magic;
eval {
my $SERVE_MAGIC_1 = 0x390c9deb; # FIXME
my $clientVersion = 0x200;
syswrite($to, pack("L<x4L<x4", $SERVE_MAGIC_1, $clientVersion))
or die;
$magic = readInt($from);
};
die "unable to connect to taalo\n" if $@;
die "did not get valid handshake from taalo\n" if $magic != 0x5452eecb;
my $serverVersion = readInt($from);
die "unsupported server version\n"
if $serverVersion < 0x200 || $serverVersion >= 0x300;
Nix::CopyClosure::copyToOpen(
$from, $to, "taalo", [$to_realize], 0, 0, 0, 1
);
writeInt(6, $to) or die;
writeStrings([$to_realize], $to);
writeInt(0, $to);
writeInt(0, $to);
my $res = readInt($from);
close $to;
waitpid($pid, 0);
exit $res;
'');
};
}
|
