PGXN is the stuff. It is going to enable a whole new ecosystem of software for PostgreSQL complete with easy install, easy search, modular design and yeah unfortunately Perl.
That said, it is time to pony up. David Wheeler has put in some serious effort, well thought out, professionally designed and peer reviewed effort on delivering a new architecture for PostgreSQL software and modules. He needs our financial support.
Go here and contribute, today. He is less than 7k away from his goal.