I will go for Perl. There is such a huge amount of linux programms still running on perl scripts.
Perl6 has a nice features like github.com/perl6/nqp and finally have multiple virtual machine targets and a nice grammar feature docs.perl6.org/language/grammars also their lowlevel concurrency model improved quite a bit.
But the main point is that we still use their tooling a lot without even knowing that we do.