On the personal side, code is art, not a means to an end. Many of us love coding. For me, it's my favorite thing in the world to do and it has been that way for 20 years. That's why we enjoy going back over old game code, to see the clever tricks that people came up with. That's why we preserve code in archives, to last thousands of years. Sure, we can generate classic art, too, and it can be fun. But generating Rambrandt paintings is nothing like actually seeing the originals. And it's nothing like creating your own.

Code being art is exactly why coders are so opinionated about their tools. Just like artists are. "I only use vim and functional programming and Linux" says the coder. "I only use these paint brushes, and this type of paint, on this particular type of canvas" says the painter. People don't consider this enough, for coding, so they just say "Use the best tool for the job." But any paint brush will do, for most jobs. Any language will do, for most jobs. Why it all matters is because we care. We care because art is a form of personal expression.

On the open source side, maintainers now just get huge PRs full of slop changes. The submitters tend to feel like they're helping, but they're just wasting everyone's time. The trust landscape of contributing has been eroded. The security concerns of large changes are now more pressing than ever. The gross disregard for licensing spits in the face of both the nature of open source and the actual legal ground on which LLMs try to stand. And then so many projects trying to grow end up getting vibe-coded weekend projects as competitors and people actually think they're comparable. For the non-trivial cases, they're not, because of the business side.

On the business side, let's take a programming language for example, like Zig. A business will be hesitant to adopt a particular technology if it's just one guy working on it. But if the technology has a community, a foundation, and a handful of devs working on it full-time, it is a safer investment. A big reason here is that the bus factor will be higher than one. However, LLM-generated code is a black box. It has a bus factor of zero. Nobody understands all of the code. Probably, nobody ever will. If there is a critical bug at a critical time, there is nobody to call. We would have to rely on LLMs to find and fix the bug, but how much faith can we actually put into this? That covers third party technology, but the same applies to first party technology.

If a small business decides to use Claude to create their mobile app, rather than hire an experienced dev, they now suffer the same black box and bus factor problem. Even if they hire a dev, but they expect the dev to finish at vibe-coding speeds, we end up with the same problem.

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In short, vibe coding removes everything I love about my favorite thing to do. It also creates heaps of blackbox code with no ownership, beholden to proprietary tech which is only getting more expensive. Why would I like that?

This is different from interop with the native world. It's different from the host runtime actually being native, rather than a baked down version of a whole VM.

Graal's native images blur the line between the JVM and native, I would not say Babashka has a native runtime. Perhaps borkdude would disagree. Might be an interesting discussion.

Currently, we have Clojure, ClojureScript, ClojureCLR, Babashka, Basilisp, Phel, and jank running the test suite.

I have only used Clojure, ClojureScript, and Babashka in production. But I am the creator of jank.

For the most part, any Clojure code which doesn't use host interop will work on all dialects. Clojure also has support for conditional code, depending on the current dialect.

This is one of Clojure's superpowers.

The main thing is that we just use our own IR first, to perform optimizations with contextual data which is gone by the time we get to LLVM IR. That's also why these optimizations are not practical to write in LLVM, since by the time we get to LLVM IR, we're too far separated from jank's AST with the high level semantics of Clojure.

So we just add an intermediate step. Once we have jank's AST, turn it into our own IR, do some optimizations on it for things that LLVM won't be able to see, and then hand it off to LLVM to do the rest.

> A future optimisation might be to specialise for unboxed types: far more potential speed improvement over pointer tagging, and IMO quite amenable to analysis with the Jank IR

All of these math functions are templates with four specific categories:

1. Object and object

2. Primitive and primitive

3. Primitive and object

4. Object and primitive

We handle the difference between typed objects (like integer_ref) and type-erased objects (object_ref) as well. This template then gets inlined, which is exactly what the last step of the benchmark optimizations (adding annotations) ensured. The return type of these functions will prefer primitive types, rather than automatically boxing. jank's analyzer tracks all types used, at compile-time, and supports automatic boxing. This means that we're already using the most optimal primitive math whenever we can and that it will indeed inline to just an operator call when working on two primitives, or two typed objects, or a combination thereof.

You can see the code for this here: https://github.com/jank-lang/jank/blob/29c2adb344526d26c8e82...

https://github.com/jank-lang/jank

It's a native Clojure dialect which is also a C++ dialect, including a JIT compiler and nREPL server. I'm currently building out a custom IR so I can do optimization passes at the level of Clojure semantics, since LLVM will not be able to do them at the LLVM IR level.

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With that said, jank will do some trail blazing down other paths (see my other comments here about Carp), but they will be optional modes which people can enable which are specific to jank. Clojure compatibility will remain constant.

1. C++

2. LLVM IR

The IR is much faster to compile, but its perf isn't nearly as good. This is meant to be a nice trade off, during iteration, so that you can use C++ codegen for your release artifact, but stick with IR when you're REPLing. The IR gen is still unstable right now, for the alpha, but we'll have both solidified this year.

There's a Clang bug getting in the way of the progress we want, so we'll need to work around. There's a lot I'm juggling, but this is high priority.

Thanks for the broken link report. That should be fixed now.

I will be exploring optional static typing modes for jank in the future, a la Carp. That will not be this year, though.