mirror of
https://github.com/NixOS/nix.git
synced 2024-11-22 14:52:55 +00:00
a562d544d8
I.e. do what git does. I'm too lazy to keep the builtin help text up to date :-) Also add ‘--help’ to various commands that lacked it (e.g. nix-collect-garbage).
104 lines
2.6 KiB
Plaintext
Executable File
104 lines
2.6 KiB
Plaintext
Executable File
#! @perl@ -w @perlFlags@
|
|
|
|
use strict;
|
|
use File::Temp qw(tempdir);
|
|
use Nix::Config;
|
|
use Nix::Manifest;
|
|
|
|
my $tmpDir = tempdir("nix-pull.XXXXXX", CLEANUP => 1, TMPDIR => 1)
|
|
or die "cannot create a temporary directory";
|
|
|
|
my $manifestDir = $Nix::Config::manifestDir;
|
|
|
|
|
|
# Prevent access problems in shared-stored installations.
|
|
umask 0022;
|
|
|
|
|
|
# Create the manifests directory if it doesn't exist.
|
|
if (! -e $manifestDir) {
|
|
mkdir $manifestDir, 0755 or die "cannot create directory `$manifestDir'";
|
|
}
|
|
|
|
|
|
# Make sure that the manifests directory is scanned for GC roots.
|
|
my $gcRootsDir = "$Nix::Config::stateDir/gcroots";
|
|
my $manifestDirLink = "$gcRootsDir/manifests";
|
|
if (! -l $manifestDirLink) {
|
|
symlink($manifestDir, $manifestDirLink) or die "cannot create symlink `$manifestDirLink'";
|
|
}
|
|
|
|
|
|
# Process the URLs specified on the command line.
|
|
|
|
sub downloadFile {
|
|
my $url = shift;
|
|
$ENV{"PRINT_PATH"} = 1;
|
|
$ENV{"QUIET"} = 1;
|
|
my ($dummy, $path) = `$Nix::Config::binDir/nix-prefetch-url '$url'`;
|
|
die "cannot fetch `$url'" if $? != 0;
|
|
die "nix-prefetch-url did not return a path" unless defined $path;
|
|
chomp $path;
|
|
return $path;
|
|
}
|
|
|
|
sub processURL {
|
|
my $url = shift;
|
|
|
|
$url =~ s/\/$//;
|
|
|
|
my $manifest;
|
|
|
|
my $origUrl = $ENV{'NIX_ORIG_URL'} || $url;
|
|
|
|
# First see if a bzipped manifest is available.
|
|
if (system("$Nix::Config::curl --fail --silent --location --head '$url'.bz2 > /dev/null") == 0) {
|
|
print "fetching list of Nix archives at `$url.bz2'...\n";
|
|
$manifest = downloadFile "$url.bz2";
|
|
}
|
|
|
|
# Otherwise, just get the uncompressed manifest.
|
|
else {
|
|
print "fetching list of Nix archives at `$url'...\n";
|
|
$manifest = downloadFile $url;
|
|
}
|
|
|
|
my $baseName = "unnamed";
|
|
if ($url =~ /\/([^\/]+)\/[^\/]+$/) { # get the forelast component
|
|
$baseName = $1;
|
|
}
|
|
|
|
my $hash = `$Nix::Config::binDir/nix-hash --flat '$manifest'`
|
|
or die "cannot hash `$manifest'";
|
|
chomp $hash;
|
|
|
|
my $urlFile = "$manifestDir/$baseName-$hash.url";
|
|
open URL, ">$urlFile" or die "cannot create `$urlFile'";
|
|
print URL $origUrl;
|
|
close URL;
|
|
|
|
my $finalPath = "$manifestDir/$baseName-$hash.nixmanifest";
|
|
|
|
unlink $finalPath if -e $finalPath;
|
|
|
|
symlink("$manifest", "$finalPath")
|
|
or die "cannot link `$finalPath to `$manifest'";
|
|
|
|
deleteOldManifests($origUrl, $urlFile);
|
|
}
|
|
|
|
while (@ARGV) {
|
|
my $url = shift @ARGV;
|
|
if ($url eq "--help") {
|
|
exec "man nix-pull" or die;
|
|
} elsif ($url eq "--skip-wrong-store") {
|
|
# No-op, no longer supported.
|
|
} else {
|
|
processURL $url;
|
|
}
|
|
}
|
|
|
|
|
|
# Update the cache.
|
|
updateManifestDB();
|