ruby-rails - 2:6.0.3.7+dfsg-2+deb11u2 main

Rails is a full-stack, open-source web framework in Ruby for writing
real-world applications.
.
Being a full-stack framework means that all layers are built to work
seamlessly together. That way you don't repeat yourself and you can
use a single language from top to bottom. Everything from templates to
control flow to business logic is written in Ruby.