lix/scripts/nix-push.in

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#! /usr/bin/perl -w
my @pushlist;
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foreach my $id (@ARGV) {
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die unless $id =~ /^([0-9a-z]{32})$/;
# Get all paths referenced by the normalisation of the given
# fstate expression.
my @paths;
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open PATHS, "nix -qrh $id 2> /dev/null |" or die "nix -qrh";
while (<PATHS>) {
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chomp;
next unless /^\//;
push @paths, $_;
}
close PATHS;
# For each path, create a Fix expression that turns the path into
# a Nix archive.
foreach my $path (@paths) {
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next unless ($path =~ /\/([0-9a-z]{32})[^\/]*/);
my $pathid = $1;
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# Construct a name for the Nix archive. If the file is an
# fstate successor, encode this into the name.
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my $name = $pathid;
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if ($path =~ /-s-([0-9a-z]{32}).nix$/) {
$name = "$name-s-$1";
}
$name = $name . ".nar.bz2";
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# Construct a Fix expression that creates a Nix archive.
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my $fixexpr =
"App(IncludeFix(\"nar/nar.fix\"), " .
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"[ (\"path\", Slice([\"$pathid\"], [(\"$path\", \"$pathid\", [])]))" .
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", (\"name\", \"$name\")" .
"])";
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my $fixfile = "/tmp/nix-push-tmp.fix";
open FIX, ">$fixfile";
print FIX $fixexpr;
close FIX;
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# Instantiate a Nix expression from the Fix expression.
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my $nid = `fix $fixfile`;
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$? and die "instantiating Nix archive expression";
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chomp $nid;
die unless $nid =~ /^([0-9a-z]{32})$/;
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# Realise the Nix expression.
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my $npath = `nix -qph $nid 2> /dev/null`;
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$? and die "creating Nix archive";
chomp $npath;
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push @pushlist, $npath;
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print "$path -> $npath\n";
}
}
# Push the prebuilts to the server. !!! FIXME
if (scalar @pushlist > 0) {
system "rsync -av -e ssh @pushlist eelco\@losser.st-lab.cs.uu.nl:/home/eelco/public_html/nix-dist/";
}