85 lines
2.3 KiB
Perl
85 lines
2.3 KiB
Perl
#! /usr/bin/perl -w
|
|
|
|
my $prefix = $ENV{"NIX"} || "/tmp/nix"; # !!! use prefix
|
|
my $etcdir = "$prefix/etc/nix";
|
|
my $tmpfile = "$prefix/var/nix/pull.tmp";
|
|
|
|
my $conffile = "$etcdir/prebuilts.conf";
|
|
|
|
my @subs;
|
|
my @sucs;
|
|
|
|
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 $fn =~ /-([0-9a-z]{32})(-s-([0-9a-z]{32}))?\.nar.bz2$/;
|
|
my $hash = $1;
|
|
my $fshash = $3;
|
|
|
|
print "registering $hash -> $url/$fn\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\"), (\"hash\", \"\")])";
|
|
my $fixexpr =
|
|
"App(IncludeFix(\"nar/unnar.fix\"), " .
|
|
"[ (\"nar\", $fetch)" .
|
|
", (\"name\", \"fetched-$hash\")" .
|
|
"])";
|
|
|
|
my $fixfile = "/tmp/nix-pull-tmp.fix";
|
|
open FIX, ">$fixfile";
|
|
print FIX $fixexpr;
|
|
close FIX;
|
|
|
|
# Instantiate a Nix expression from the Fix expression.
|
|
my $nhash = `fix $fixfile`;
|
|
$? and die "instantiating Nix archive expression";
|
|
chomp $nhash;
|
|
die unless $nhash =~ /^([0-9a-z]{32})$/;
|
|
|
|
push @subs, $hash;
|
|
push @subs, $nhash;
|
|
|
|
# Does the name encode a successor relation?
|
|
if (defined $fshash) {
|
|
print "NORMAL $fshash -> $hash\n";
|
|
push @sucs, $fshash;
|
|
push @sucs, $hash;
|
|
}
|
|
}
|
|
|
|
close INDEX;
|
|
|
|
unlink $tmpfile;
|
|
}
|
|
|
|
}
|
|
|
|
system "nix --substitute @subs";
|
|
if ($?) { die "`nix --substitute' failed"; }
|
|
|
|
system "nix --successor @sucs";
|
|
if ($?) { die "`nix --successor' failed"; }
|