​​Sorbet is 100% compatible with #ruby. It type checks normal method definitions, and introduces backwards-compatible syntax for method signatures: https://sorbet.org/

#ruby on rails 6.0 release: https://weblog.rubyonrails.org/2019/8/15/Rails-6-0-final-release/

Interesting. I thought that ruby is dead...

​​dry-effects is a practical, production-oriented implementation of algebraic effects in #ruby.

https://dry-rb.org/gems/dry-effects/0.1/

Great talk with a great name: "Ruby is Dead"

But. This talk is not about just some specific problems in #ruby on its own, it spreads an inportant idea: "Programmers want tools, not toys". Sadly, that's what #python started to do: shipping toys.

One more fun fact: this talk uses #php as an example of good language evolution. And I tend to agree.