Here is how we bind the Skylight gem to the Rust bit: https://github.com/skylightio/skylight-ruby/blob/master/ext/...

https://github.com/steveklabnik/rust_example is one way to do it, albiet the most complex one: a thin C wrapper over the Rust, which is then a C extension for Ruby. Easier ones are using FFI or Fiddle.

I think they are referring to this http://blog.skylight.io/bending-the-curve-writing-safe-fast-... in the blogpost

Here's PyCon2015 talk on how to call Rust from Python: https://www.youtube.com/watch?v=3CwJ0MH-4MA