/prog/ programming language design and implementation club

Hello this is the first thread of the /prog/ PL design and implementation club!

So what programming languages are you all working on? what stage are you at with it and what ideas are you putting it into it? Have you learned any new things recently that made you change your views?

[not language]: flexible sexpr-based library that works as a fully costumisable interprinter on run-time

[language]: ``pure'' functional, declerative programming language with something between C and ML syntax. uses Dependent typing + Uniqueness typing

I am working on the parser but I am lazy