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#! /usr/bin/perl -w
use strict;
use POSIX qw(tmpnam);
my $tmpdir;
do { $tmpdir = tmpnam(); }
until mkdir $tmpdir, 0777;
my $nixfile = "$tmpdir/create-nars.nix";
my $manifest = "$tmpdir/MANIFEST";
END { unlink $manifest; unlink $fixfile; rmdir $tmpdir; }
open NIX, ">$nixfile";
print NIX "[";
my @paths;
foreach my $id (@ARGV) {
die unless $id =~ /^\//;
# Get all paths referenced by the normalisation of the given
# Nix expression.
system "nix-store --realise $id > /dev/null";
die if ($?);
open PATHS, "nix-store --query --requisites --include-successors $id 2> /dev/null |" or die;
while (<PATHS>) {
chomp;
die "bad: $_" unless /^\//;
push @paths, $_;
}
close PATHS;
# For each path, create a Nix expression that turns the path into
# a Nix archive.
foreach my $path (@paths) {
die unless ($path =~ /\/[0-9a-z]{32}.*$/);
print "$path\n";
# Construct a Nix expression that creates a Nix archive.
my $nixexpr =
"((import @datadir@/nix/corepkgs/nar/nar.nix) " .
# !!! $path should be represented as a closure
"{path = \"$path\"; system = \"@host@\"}) ";
print NIX $nixexpr;
}
}
print NIX "]";
close NIX;
# Instantiate a store expression from the Nix expression.
my @nids;
print STDERR "instantiating Nix expression...\n";
open NIDS, "nix-instantiate $nixfile |" or die "cannot run nix-instantiate";
while (<NIDS>) {
chomp;
die unless /^\//;
push @nids, $_;
}
close NIDS;
# Realise the store expression.
print STDERR "creating archives...\n";
system "nix-store --realise -v @nids > /dev/null";
if ($?) { die "`nix --realise' failed"; }
my @narpaths;
open NIDS, "nix-store --query --list @nids |" or die "cannot run nix";
while (<NIDS>) {
chomp;
die unless (/^\//);
push @narpaths, "$_";
}
close NIDS;
# Create the manifest.
print STDERR "creating manifest...\n";
open MANIFEST, ">$manifest";
my @pushlist;
push @pushlist, $manifest;
for (my $n = 0; $n < scalar @paths; $n++) {
my $storepath = $paths[$n];
my $nardir = $narpaths[$n];
$storepath =~ /\/([^\/]*)$/;
my $basename = $1;
defined $basename or die;
my $narname = "$basename.nar.bz2";
my $narfile = "$nardir/$narname";
(-f $narfile) or die "narfile for $storepath not found";
push @pushlist, $narfile;
open MD5, "$nardir/md5" or die "cannot open hash";
my $hash = <MD5>;
chomp $hash;
$hash =~ /^[0-9a-z]{32}$/ or die "invalid hash";
close MD5;
print MANIFEST "{\n";
print MANIFEST " StorePath: $storepath\n";
print MANIFEST " NarName: $narname\n";
print MANIFEST " MD5: $hash\n";
if ($storepath =~ /\.nix$/) {
open PREDS, "nix-store --query --predecessors $storepath |" or die "cannot run nix";
while (<PREDS>) {
chomp;
die unless (/^\//);
print MANIFEST " SuccOf: $_\n";
}
close PREDS;
}
print MANIFEST "}\n";
}
close MANIFEST;
# Push the prebuilts to the server. !!! FIXME
print STDERR "pushing to server...\n";
if (scalar @pushlist > 0) {
system "rsync -av -e ssh @pushlist eelco\@losser.st-lab.cs.uu.nl:/home/eelco/public_html/nix-dist/";
}
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