Recently, I have been working on euwren, a high level wrapper for Wren.
The idea behind euwren is to be the king of Wren wrappers, one that uses a user-friendly DSL and that makes wrapping Nim procs a piece of cake. All you have to do is list the things you need in the VM, and voila! The VM is ready to execute some Nim code.
The wrapper is highly WIP, but the most essential things are ready to be used. You can find the wrapper here.
Feel free to suggest any features you'd like to see, or any bugs you find. I'll be happy to take care of them.
euwren 0.3.0 is out! This release introduces the ability to interact with Wren from Nim.
Changelog: https://github.com/liquid600pgm/euwren/releases/tag/0.3.0
and much more quality of life improvements. Feel free to check out the changelog.