mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-10 08:16:15 +02:00
92 lines
2.2 KiB
Text
92 lines
2.2 KiB
Text
#! @perl@ -w -I@libexecdir@/nix
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use strict;
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use IPC::Open2;
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use POSIX qw(tmpnam);
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use readmanifest;
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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 $manifest = "$tmpdir/manifest";
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#END { unlink $manifest; rmdir $tmpdir; }
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# Obtain URLs either from the command line or from a configuration file.
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my %narFiles;
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my %patches;
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my %successors;
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sub processURL {
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my $url = shift;
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$url =~ s/\/$//;
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print "obtaining list of Nix archives at $url...\n";
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system("@curl@ --fail --silent --show-error --location --max-redirs 20 " .
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"'$url' > '$manifest'") == 0
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or die "curl failed: $?";
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readManifest $manifest, \%narFiles, \%patches, \%successors;
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}
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while (@ARGV) {
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my $url = shift @ARGV;
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processURL $url;
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}
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my $size = scalar (keys %narFiles);
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print "$size store paths in manifest\n";
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# Instantiate a store expression that builds the substitute program
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# (the program that fetches URLs and unpacks them into the store).
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my $nixExpr =
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"(import @datadir@/nix/corepkgs/nix-pull) " .
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"{system = \"@system@\";}";
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print STDERR "building downloader...\n";
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my $substProgram = `echo '$nixExpr' | @bindir@/nix-store -qnf \$(@bindir@/nix-instantiate -)`
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or die "cannot instantiate Nix expression";
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chomp $substProgram;
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# Register all substitutes.
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print STDERR "registering substitutes...\n";
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my $pid = open2(\*READ, \*WRITE, "@bindir@/nix-store --substitute")
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or die "cannot run nix-store";
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close READ;
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foreach my $storePath (keys %narFiles) {
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my $narFileList = $narFiles{$storePath};
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foreach my $narFile (@{$narFileList}) {
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print WRITE "$storePath\n";
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print WRITE "$substProgram/fetch\n";
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print WRITE "2\n";
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print WRITE "$narFile->{url}\n";
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print WRITE "$narFile->{hash}\n";
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}
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}
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close WRITE;
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waitpid $pid, 0;
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$? == 0 or die "nix-store failed";
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# Register all successors.
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print STDERR "registering successors...\n";
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my @sucs = %successors;
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while (scalar @sucs > 0) {
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my $n = scalar @sucs;
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if ($n > 256) { $n = 256 };
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my @sucs2 = @sucs[0..$n - 1];
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@sucs = @sucs[$n..scalar @sucs - 1];
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system "@bindir@/nix-store --successor @sucs2";
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if ($?) { die "`nix-store --successor' failed"; }
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}
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