mirror of
https://github.com/NixOS/nix.git
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113 lines
3.0 KiB
Plaintext
113 lines
3.0 KiB
Plaintext
#! @perl@ -w -I@libexecdir@/nix
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use strict;
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use File::Temp qw(tempdir);
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use readmanifest;
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my $tmpDir = tempdir("nix-pull.XXXXXX", CLEANUP => 1, TMPDIR => 1)
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or die "cannot create a temporary directory";
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my $binDir = $ENV{"NIX_BIN_DIR"};
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$binDir = "@bindir@" unless defined $binDir;
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my $libexecDir = $ENV{"NIX_LIBEXEC_DIR"};
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$libexecDir = "@libexecdir@" unless defined $libexecDir;
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my $stateDir = $ENV{"NIX_STATE_DIR"};
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$stateDir = "@localstatedir@/nix" unless defined $stateDir;
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my $storeDir = $ENV{"NIX_STORE_DIR"};
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$storeDir = "@storedir@" unless defined $storeDir;
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# Prevent access problems in shared-stored installations.
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umask 0022;
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# Process the URLs specified on the command line.
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my %narFiles;
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my %localPaths;
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my %patches;
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my $skipWrongStore = 0;
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sub downloadFile {
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my $url = shift;
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$ENV{"PRINT_PATH"} = 1;
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$ENV{"QUIET"} = 1;
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my ($dummy, $path) = `$binDir/nix-prefetch-url '$url'`;
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die "cannot fetch `$url'" if $? != 0;
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die "nix-prefetch-url did not return a path" unless defined $path;
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chomp $path;
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return $path;
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}
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sub processURL {
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my $url = shift;
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$url =~ s/\/$//;
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my $manifest;
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# First see if a bzipped manifest is available.
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if (system("@curl@ --fail --silent --head '$url'.bz2 > /dev/null") == 0) {
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print "obtaining list of Nix archives at `$url.bz2'...\n";
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my $bzipped = downloadFile "$url.bz2";
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$manifest = "$tmpDir/MANIFEST";
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system("@bunzip2@ < $bzipped > $manifest") == 0
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or die "cannot decompress manifest";
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$manifest = (`$binDir/nix-store --add $manifest`
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or die "cannot copy $manifest to the store");
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chomp $manifest;
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}
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# Otherwise, just get the uncompressed manifest.
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else {
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print "obtaining list of Nix archives at `$url'...\n";
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$manifest = downloadFile $url;
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}
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if (readManifest($manifest, \%narFiles, \%localPaths, \%patches) < 3) {
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die "`$url' is not manifest or it is too old (i.e., for Nix <= 0.7)\n";
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}
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if ($skipWrongStore) {
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foreach my $path (keys %narFiles) {
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if (substr($path, 0, length($storeDir) + 1) ne "$storeDir/") {
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print STDERR "warning: manifest `$url' assumes a Nix store at a different location than $storeDir, skipping...\n";
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exit 0;
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}
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}
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}
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my $baseName = "unnamed";
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if ($url =~ /\/([^\/]+)\/[^\/]+$/) { # get the forelast component
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$baseName = $1;
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}
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my $hash = `$binDir/nix-hash --flat '$manifest'`
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or die "cannot hash `$manifest'";
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chomp $hash;
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my $finalPath = "$stateDir/manifests/$baseName-$hash.nixmanifest";
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system("@coreutils@/ln", "-sfn", "$manifest", "$finalPath") == 0
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or die "cannot link `$finalPath to `$manifest'";
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}
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while (@ARGV) {
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my $url = shift @ARGV;
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if ($url eq "--skip-wrong-store") {
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$skipWrongStore = 1;
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} else {
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processURL $url;
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}
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}
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my $size = scalar (keys %narFiles) + scalar (keys %localPaths);
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print "$size store paths in manifest\n";
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