Rust but Lisp

In plain words

Rust but Lisp is a developer tool that combines Rust's performance and safety features with Lisp's functional programming paradigm. It targets programmers seeking an alternative to traditional systems languages while maintaining low-level control and compile-time guarantees. The project merges memory safety mechanisms from Rust with Lisp's symbolic computation and macro capabilities, appealing to developers interested in exploring hybrid language design.

written from the facts on this page · September 2026

From the sources

Hello, Hacker News. You're not wrong. This is a weekend project, not a production compiler — some Rust syntax is missing (turbofish is fixed now, lifetime bounds are on the list). The point isn't completeness; it's exploring what happens when you bolt Lisp macros onto Rust semantics. If that sounds interesting, read on. If you're looking for something to be mad about, the issue tracker is open . Rust semantics in LISP syntax. Write s-expressions, output Rust source: (s-expr → .rs → binary) . (struct Point (x f64) (y f64)) (impl Point (fn distance (( &self ) (other &Point )) f64 ( let dx ( - ( . self x) ( . other x))) ( let dy ( - ( . self y) ( . other y))) ( . ( + ( . dx powf 2.0 ) ( . dy…from github.com

• RL
  Risp – Lisp in Rust2019 · m.stopa.io · ▲314

  Read Essays by Stepan Parunashvili

• 
  A notebook-style Common Lisp environment2017 · github.com · ▲180

  The notebook-style Common Lisp environment. Contribute to tamamu/darkmatter development by creating an account on GitHub.

• 
  A Language Server Implementation for SystemD Unit Files2025 · github.com · ▲78

  A Language Server Protocol (LSP) implementation for systemd unit files, providing editing support with syntax highlighting, diagnostics, autocompletion, and documentation made with rust.

• 
  Lisp in C#2024 · github.com · ▲144

  a custom Lisp. Contribute to codr7/sharpl development by creating an account on GitHub.

• 
  Using Common Lisp from Inside the Browser2025 · turtleware.eu · ▲111
• 
  I'm making a dynamic language in Rust2022 · github.com · ▲184

  An implementation of a dynamic programming language in Rust. Includes: Parser/Compiler, REPL, Virtual Machine, Bytecode Disassembler This started out as a learning project to teach myself Rust. It has grown into a decently substantial piece of software and I've learned quite a bit in the process! Some neat things: + A garbage collector that can store dynamically sized types without any double-indirection (i.e. I have my own Box implementation with manual alloc/dealloc) + The smart pointer used to reference GCed data is a thin pointer. The ptr metadata needed for DSTs is stored in…

• 
  /dev/null▲468

  a social network for devs

  Dev tools · 2d ago · dev-null.sh

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 27d ago · github.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 25d ago · github.com

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 22d ago · openbot.run

• 
  Talanoa▲340

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 20d ago · talanoa.email

• 
  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 27d ago · corespeed.io

• 
  Brew ▲900

  Like Claude design for email marketing

  AI · May 2026 · brew.new

• 
  Kilo Code for VS Code▲896

  Parallel agents, diff reviewer, and multi-model comparisons

  Dev tools · May 2026 · kilo.ai

• 
  StoreClaw▲806

  Grow your store profits with agents that know how to sell

  AI · May 2026 · storeclaw.ai

• 
  PollyReach▲795

  Give your agent a real number and voice to make calls.

  AI · May 2026 · pollyreach.ai

• 
  Needle: We Distilled Gemini Tool Calling into a 26M Model▲776

  Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…

  Life & fun · May 2026 · github.com

• 
  Files.md – Open-source alternative to Obsidian▲730

  🌱 Private, quiet space for thinking. Simple app for .md files. - zakirullin/files.md

  Dev tools · May 2026 · github.com