Just wrapped up implementing Argon2 in Nim. This was mostly as a learning experience and this is not production ready code. It lacks optimizations and security considerations. As far as I can tell this is the only Nim implementation. Hopefully someone smarter and more proficient at Nim than me can use it as a basis for implementing a production ready version. Comments and suggestions welcome.
<https://github.com/xioren/argon2-nim>