Fennel
urn
Our great sponsors
Fennel | urn | |
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90 | 6 | |
2,281 | 362 | |
- | - | |
9.1 | 0.0 | |
about 17 hours ago | over 5 years ago | |
Fennel | Common Lisp | |
MIT License | BSD 3-clause "New" or "Revised" License |
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Fennel
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Pluto, a Modern Lua Dialect
Eh it's not just luajit and luajit didn't create that problem either. It's a symptom of lua actually succeeding at its design goal of being easily embedded as an extension language. A significant number of incompatible runtimes are more popular than the most recent puc lua, including I believe the older official lua 5.2 released in 2011.
I've done a fair bit of professional lua development and I don't think I've ever written standalone up-to-date puc lua except maybe for some tooling & scripts. It's such a small language and used in such a way that the runtime, distribution method, and available APIs have much more impact on your use (and compatibility) than the version.
Virtually everyone shipping a lua environment is also shipping changes to it that make it a unique target, if only extensions to the standard library. This is why I think syntax layer-only approach like fennel's is the correct choice for improving on lua. It mirrors lua's runtime semantics exactly, and allows you to access the implementation peculiars on their own terms and so can just be run on time of any lua system.
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LÖVE: a framework to make 2D games in Lua
Just learned about https://fennel-lang.org/ , could have probably used that as well to avoid Lua.
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The Bipolar Lisp Programmer
> I’m positive that there is a Lispy language out there (actually in existence, or the aether) that is appropriate for embedded work, but the constraints of the target make it difficult to envision.
Perhaps Fennel* fits the bill?
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The Future of the Vim Project
I've also seen neovim plugins written in fennel [0], so if you want something lispy, that's possible now.
[0]: a Lisp that compiles to Lua, https://github.com/bakpakin/Fennel
- Qual a linguagem que vocês mais gostam de programar?
- Can I use elixir as the scripting language of my game engine?
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TimL: Clojure-like Lisp dialect that runs on and compiles down to Vimscript
Something similar: Fennel (https://fennel-lang.org/) is a lisp that compiles into Lua, which nvim can use as plugins, so you can write nvim plugins in a lisp. Aniseed (https://github.com/Olical/aniseed) makes this really easy.
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Announcing automation-service: write and schedule home automation scripts in Lua
If you want a more FP language on the Lua runtime, you might be interested in Fennel. I wrote a post about adding Fennel compiler to a hslua interpreter a while back, which might be useful for you.
- 916 Days of Emacs
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What's your opinion on Lua programming language?
There's fennel if you're a fan of LISP syntax. I like embedding lua because it's light and easy and doesn't re-engineer itself every six months like python; but I agree, the lua syntax certainly is fugly.
urn
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Using other languages
There's many different languages that can compile to Lua: - TypeScript is probably the most well-known and most compatible language for Lua. The TypeScriptToLua compiler lets you compile TypeScript code into Lua with a mostly 1:1 conversion. You can use the @jackmacwindows/craftos-types and @jackmacwindows/cc-types NPM packages to add typing declarations for CraftOS APIs and modules. Alternatively, use my template repo for a more ready-to-go setup. - Haxe was built with compilation to Lua in mind, and so you can write code for it and have it run just fine in CC. There's some declarations for it available online, and I also have my own typing set for it (which I should really upload somewhere - DM me if you want it for now). - C# can also compile to Lua, but it's a bit tough to get working right in CC, as it has a huge default library and abuses the global table in a way that CC has trouble with. However, it's possible to use, and I've gotten it working in the past (unfortunately, I don't know how anymore). - Urn is a Lisp dialect that was built by two CC devs and was designed to run in CC. However, I wouldn't recommend it unless you're good with functional programming.
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C-Lisp Implementations for microcontrollers?
Also, if the microcontroller you're working with is an ESP32 chip, you may be able to use use one of the lisp-to-Lua transpiled languages (urn or fennel) with something like Lua RTOS or NodeMCU. Not entirely sure how well this works in practice, but in theory it should be possible. Of the two, Fennel's probably more likely to behave well when used like this because it's more like a thin translation layer on top of Lua, but Urn's probably going to feel more comfortable to use because it feels like this weird mix of CL and Racket design.
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Interesting or distinctive lisps?
Urn Lisp, A Lisp implementation on top of Lua: https://urn-lang.com
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Trying Fennel for GTK apps and it's surprisingly good
I don't know how much of reloading you need. I did something like that many moons ago. See here: https://github.com/SquidDev/urn/issues/12
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Urn for CC?
Clone Urn: wget run https://gist.githubusercontent.com/SquidDev/e0f82765bfdefd48b0b15a5c06c0603b/raw/clone.lua https://github.com/SquidDev/urn.git (or similar)
What are some alternatives?
janet - A dynamic language and bytecode vm
LiveSplit - A sleek, highly customizable timer for speedrunners.
nvim-lspconfig - Quickstart configs for Nvim LSP
medley - The main repo for the Medley Interlisp project. Wiki, Issues are here. Other repositories include maiko (the VM implementation) and Interlisp.github.io (web site sources)
Lua-RTOS-ESP32 - Lua RTOS for ESP32
liz - Lisp-flavored general-purpose programming language (based on Zig)
lua-languages - Languages that compile to Lua
cakelisp - Metaprogrammable, hot-reloadable, no-GC language for high perf programs (especially games), with seamless C/C++ interop
nvim-treesitter - Nvim Treesitter configurations and abstraction layer
flitter - A Livesplit-inspired speedrunning split timer for Linux/macOS terminal. Supports global hotkeys.
webassembly-lua - Write and compile WebAssembly code with Lua
Penlight - A set of pure Lua libraries focusing on input data handling (such as reading configuration files), functional programming (such as map, reduce, placeholder expressions,etc), and OS path management. Much of the functionality is inspired by the Python standard libraries.