109 lines
2.8 KiB
Perl
109 lines
2.8 KiB
Perl
#! /usr/bin/perl -w
|
|
|
|
my $tmpfile = "@localstatedir@/nix/pull.tmp";
|
|
my $conffile = "@sysconfdir@/nix/prebuilts.conf";
|
|
|
|
my @ids;
|
|
my @subs;
|
|
my @sucs;
|
|
|
|
my $fixfile = "/tmp/nix-pull-tmp.fix";
|
|
open FIX, ">$fixfile";
|
|
print FIX "[";
|
|
my $first = 1;
|
|
|
|
open CONFFILE, "<$conffile";
|
|
|
|
while (<CONFFILE>) {
|
|
|
|
chomp;
|
|
if (/^\s*(\S+)\s*(\#.*)?$/) {
|
|
my $url = $1;
|
|
|
|
print "obtaining list of Nix archives at $url...\n";
|
|
|
|
system "wget '$url' -O '$tmpfile' 2> /dev/null"; # !!! escape
|
|
if ($?) { die "`wget' failed"; }
|
|
|
|
open INDEX, "<$tmpfile";
|
|
|
|
while (<INDEX>) {
|
|
# Get all links to prebuilts, that is, file names of the
|
|
# form foo-HASH-HASH.tar.bz2.
|
|
next unless (/HREF=\"([^\"]*)\"/);
|
|
my $fn = $1;
|
|
next if $fn =~ /\.\./;
|
|
next if $fn =~ /\//;
|
|
next unless $fn =~ /^([0-9a-z]{32})-([0-9a-z]{32})(.*)\.nar\.bz2$/;
|
|
my $hash = $1;
|
|
my $id = $2;
|
|
my $outname = $3;
|
|
my $fsid;
|
|
if ($outname =~ /^-/) {
|
|
next unless $outname =~ /^-((s-([0-9a-z]{32}))?.*)$/;
|
|
$outname = $1;
|
|
$fsid = $3;
|
|
} else {
|
|
$outname = "unnamed";
|
|
}
|
|
|
|
print STDERR "$id ($outname)\n";
|
|
|
|
# Construct a Fix expression that fetches and unpacks a
|
|
# Nix archive from the network.
|
|
my $fetch =
|
|
"App(IncludeFix(\"fetchurl/fetchurl.fix\"), " .
|
|
"[(\"url\", \"$url/$fn\"), (\"md5\", \"$hash\")])";
|
|
my $fixexpr =
|
|
"App(IncludeFix(\"nar/unnar.fix\"), " .
|
|
"[ (\"nar\", $fetch)" .
|
|
", (\"name\", \"$outname\")" .
|
|
", (\"id\", \"$id\")" .
|
|
"])";
|
|
|
|
print FIX "," unless ($first);
|
|
$first = 0;
|
|
print FIX $fixexpr;
|
|
|
|
push @ids, $id;
|
|
|
|
# Does the name encode a successor relation?
|
|
if (defined $fsid) {
|
|
push @sucs, $fsid;
|
|
push @sucs, $id;
|
|
}
|
|
}
|
|
|
|
close INDEX;
|
|
|
|
unlink $tmpfile;
|
|
}
|
|
|
|
}
|
|
|
|
print FIX "]";
|
|
close FIX;
|
|
|
|
# Instantiate Nix expressions from the Fix expressions we created above.
|
|
print STDERR "running fix...\n";
|
|
open NIDS, "fix $fixfile |" or die "cannot run fix";
|
|
my $i = 0;
|
|
while (<NIDS>) {
|
|
chomp;
|
|
die unless /^([0-9a-z]{32})$/;
|
|
$nid = $1;
|
|
die unless ($i < scalar @ids);
|
|
$id = $ids[$i++];
|
|
push @subs, $id;
|
|
push @subs, $nid;
|
|
}
|
|
|
|
# Register all substitutes.
|
|
print STDERR "registering substitutes...\n";
|
|
system "nix --substitute @subs";
|
|
if ($?) { die "`nix --substitute' failed"; }
|
|
|
|
# Register all successors.
|
|
print STDERR "registering successors...\n";
|
|
system "nix --successor @sucs";
|
|
if ($?) { die "`nix --successor' failed"; }
|