mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-26 15:56:18 +02:00
138 lines
3.2 KiB
Perl
138 lines
3.2 KiB
Perl
#! /usr/bin/perl -w
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use strict;
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use POSIX qw(tmpnam);
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my $tmpdir;
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do { $tmpdir = tmpnam(); }
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until mkdir $tmpdir, 0777;
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my $nixfile = "$tmpdir/create-nars.nix";
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my $manifest = "$tmpdir/MANIFEST";
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END { unlink $manifest; unlink $fixfile; rmdir $tmpdir; }
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open NIX, ">$nixfile";
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print NIX "[";
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my @paths;
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foreach my $id (@ARGV) {
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die unless $id =~ /^\//;
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# Get all paths referenced by the normalisation of the given
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# Nix expression.
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system "nix-store --realise $id > /dev/null";
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die if ($?);
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open PATHS, "nix-store --query --requisites --include-successors $id 2> /dev/null |" or die;
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while (<PATHS>) {
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chomp;
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die "bad: $_" unless /^\//;
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push @paths, $_;
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}
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close PATHS;
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# For each path, create a Nix expression that turns the path into
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# a Nix archive.
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foreach my $path (@paths) {
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die unless ($path =~ /\/[0-9a-z]{32}.*$/);
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print "$path\n";
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# Construct a Nix expression that creates a Nix archive.
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my $nixexpr =
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"((import @datadir@/nix/corepkgs/nar/nar.nix) " .
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# !!! $path should be represented as a closure
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"{path = \"$path\"; system = \"@host@\"}) ";
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print NIX $nixexpr;
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}
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}
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print NIX "]";
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close NIX;
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# Instantiate a store expression from the Nix expression.
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my @nids;
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print STDERR "instantiating Nix expression...\n";
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open NIDS, "nix-instantiate $nixfile |" or die "cannot run nix-instantiate";
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while (<NIDS>) {
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chomp;
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die unless /^\//;
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push @nids, $_;
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}
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close NIDS;
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# Realise the store expression.
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print STDERR "creating archives...\n";
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system "nix-store --realise -v @nids > /dev/null";
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if ($?) { die "`nix --realise' failed"; }
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my @narpaths;
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open NIDS, "nix-store --query --list @nids |" or die "cannot run nix";
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while (<NIDS>) {
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chomp;
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die unless (/^\//);
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push @narpaths, "$_";
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}
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close NIDS;
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# Create the manifest.
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print STDERR "creating manifest...\n";
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open MANIFEST, ">$manifest";
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my @pushlist;
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push @pushlist, $manifest;
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for (my $n = 0; $n < scalar @paths; $n++) {
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my $storepath = $paths[$n];
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my $nardir = $narpaths[$n];
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$storepath =~ /\/([^\/]*)$/;
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my $basename = $1;
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defined $basename or die;
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my $narname = "$basename.nar.bz2";
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my $narfile = "$nardir/$narname";
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(-f $narfile) or die "narfile for $storepath not found";
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push @pushlist, $narfile;
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open MD5, "$nardir/md5" or die "cannot open hash";
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my $hash = <MD5>;
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chomp $hash;
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$hash =~ /^[0-9a-z]{32}$/ or die "invalid hash";
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close MD5;
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print MANIFEST "{\n";
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print MANIFEST " StorePath: $storepath\n";
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print MANIFEST " NarName: $narname\n";
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print MANIFEST " MD5: $hash\n";
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if ($storepath =~ /\.nix$/) {
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open PREDS, "nix-store --query --predecessors $storepath |" or die "cannot run nix";
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while (<PREDS>) {
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chomp;
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die unless (/^\//);
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print MANIFEST " SuccOf: $_\n";
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}
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close PREDS;
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}
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print MANIFEST "}\n";
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}
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close MANIFEST;
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# Push the prebuilts to the server. !!! FIXME
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print STDERR "pushing to server...\n";
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if (scalar @pushlist > 0) {
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system "rsync -av -e ssh @pushlist eelco\@losser.st-lab.cs.uu.nl:/home/eelco/public_html/nix-dist/";
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}
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