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|
#! @perl@ -w
use strict;
use File::Basename;
use IO::Handle;
my $binDir = $ENV{"NIX_BIN_DIR"} || "@bindir@";
STDOUT->autoflush(1);
my @remoteStoresAll = split ':', ($ENV{"NIX_OTHER_STORES"} or "");
my @remoteStores;
foreach my $dir (@remoteStoresAll) {
push @remoteStores, glob($dir);
}
$ENV{"NIX_REMOTE"} = "";
sub findStorePath {
my $storePath = shift;
foreach my $store (@remoteStores) {
my $sourcePath = "$store/store/" . basename $storePath;
next unless -e $sourcePath || -l $sourcePath;
$ENV{"NIX_DB_DIR"} = "$store/var/nix/db";
return ($store, $sourcePath) if
system("@bindir@/nix-store --check-validity $storePath") == 0;
}
return undef;
}
if ($ARGV[0] eq "--query") {
while (<STDIN>) {
my $cmd = $_; chomp $cmd;
if ($cmd eq "have") {
my $storePath = <STDIN>; chomp $storePath;
print STDOUT (defined findStorePath($storePath) ? "1\n" : "0\n");
}
elsif ($cmd eq "info") {
my $storePath = <STDIN>; chomp $storePath;
my ($store, $sourcePath) = findStorePath($storePath);
if (!defined $store) {
print "0\n";
next; # not an error
}
print "1\n";
$ENV{"NIX_DB_DIR"} = "$store/var/nix/db";
my $deriver = `@bindir@/nix-store --query --deriver $storePath`;
die "cannot query deriver of `$storePath'" if $? != 0;
chomp $deriver;
$deriver = "" if $deriver eq "unknown-deriver";
my @references = split "\n",
`@bindir@/nix-store --query --references $storePath`;
die "cannot query references of `$storePath'" if $? != 0;
print "$deriver\n";
print scalar @references, "\n";
print "$_\n" foreach @references;
print "0\n"; # !!! showing size not supported (yet)
}
else { die "unknown command `$cmd'"; }
}
}
elsif ($ARGV[0] eq "--substitute") {
die unless scalar @ARGV == 2;
my $storePath = $ARGV[1];
my ($store, $sourcePath) = findStorePath $storePath;
die unless $store;
print "\n*** Copying `$storePath' from `$sourcePath'\n\n";
system("$binDir/nix-store --dump $sourcePath | $binDir/nix-store --restore $storePath") == 0
or die "cannot copy `$sourcePath' to `$storePath'";
}
else { die; }
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