Welcome!

A data structure template language.

Rimu is a friendly template language for structured data and functional expressions.

Create parametric data using the best of Yaml structures and Lisp functions.

🌿 Features

Structured: Structured block and flow data of Yaml (opens in a new tab)
Functional: Functional expressions of Lisp (opens in a new tab)
Educational *: Inspired by Logo (opens in a new tab) to be accessible to beginner programmers
Embeddable: Lightweight embed into web or native apps
Debug-friendly *: Clear error messages when something is wrong
Secure: Safe with untrusted input

* Work in progress

Programmatic users: When you want to give users an expressive language for building things, like OpenSCAD (opens in a new tab).
Educational code: When you want to teach beginners how to program, like Logo (opens in a new tab) or Scratch (opens in a new tab).
Creative code: When you want to give artists and creators a playground for interactive and generative art.
Complex configs: When your infrastructure-as-code (Kubernetes (opens in a new tab), Terraform (opens in a new tab), NixOps (opens in a new tab)), declarative package managers (Nix (opens in a new tab)), or build systems (Bazel (opens in a new tab)) are complex enough to need functional config generation.
Expressive configs: When you want your system's configuration to be more expressive than static data.

The author Mikey (opens in a new tab) (as part of Village Kit (opens in a new tab)) is motivated by the "programmatic user", which may inform future developments.

The Rimu language is in the experimental phase.

If you want to participate in mad science, please join us! 🧪

For more stable alternatives, see related projects.

We believe in learning and growing together.

Join the conversation, share your insights, ask questions, and help evolve Rimu in our Community Discussions (opens in a new tab).

Contributions to the development and documentation of Rimu are always welcome!