use Hydra::View::NixNAR;

    $info .= "Compression: bzip2\n";

    $info .= "Compression: " . file_compression $storePath . "\n";

sub file_compression {
    my ($file) = $@_;
    if /\\.(gz|bz2|xz|lz|zip)/
	return "none";
    else
	return "bzip2";
}

    my $compression = file_compression($storePath);

    $c->response->content_length(-s $storePath) if ($compression == "none");

    open $fh, "nix-store --dump '$storePath' | bzip2 |";

    if ($compression == "none")
	open $fh, "nix-store --dump '$storePath' |";
    else
	open $fh, "nix-store --dump '$storePath' | bzip2 |";