> Anthropic is not in the programming language market; their post about rewriting Bun in Rust is full of technical details that led to improving the end product for their users

Anthropic absolutely is in the programming language market. If/since AI makes rewrites to certain languages relatively easy, a success story will tie the given language(s) to the given AI company.

Rust may have a tremendous success in the future, because it's much easier to write it with AI (ignoring for a moment whether that's really a good thing). The implication is that Anthropic has a stake in Rust's success.

Also, to be kept in mind that devs advertising successfull rewrites often hide some aspects that are unfavorable to the narrative; typically, how bad was the code before the rewrite), although there are other (significant) aspects that have been omitted.

> Zig's response is a sour opinion piece full of personal attacks.

I take you haven't read Andrew Kelley's article (here: https://andrewkelley.me/post/my-thoughts-bun-rust-rewrite.ht...).

Summary:

- Jarred has written Bun with very bad engineering standards

- Jarred has managed public relations very poorly (e.g. ghosting the Zig foundation)

- When they rewrote the project to Rust, and described Zig as poor choice, there has been a negative fallout for Zig

- The ZSF is obviously upset because of the poor publicity

This is summarized at the end of the post:

> Zig users who knew next to none of these facts and have only the surface level understanding that an ex-Zig-user is getting trashed by the language creator. Such people might reasonably worry that might happen to them

As a matter of fact, I also believed the same after reading's Bun's post. This is undeserved though, and that's what Kelley explains.

There's definitely a personal attack somewhat, and this is addressed in the last (added later) section.

Yeah, exactly. It's weird that Zig even responded to that. Imagining that your studio switched from Unity to Unreal and Unity proceeded to release a hit piece attacking your codebase quality and workplace environment.

It's the old craftsmen vs industry issue, Andrew comes from the craftsman tradition that prefers all other people developing to also be proud craftsmen.

What Java, JS, Python and C# all did to conquer the industry from a C++ dominance was to provide safety harnesses for less "perfectionist" workers to fumble around without causing a mess, to write C and C++ in an increasingly hostile world we realized you needed a lot of craftsmanship, the performance benefits outdid and kept the latter languages relevant for a long while.

Still, the performance/predictability penalty didn't give way so Rust (and Swift) came into play. They don't have as many unpredictable performance characteristics as the previously "safe" GC languages but still provided more or less the same guarantees (in some ways perhaps even better for Rust).

The brilliance of the Rust ideas did start a bit of a cambrian explosion of languages in that niche, most of them however targeting a bit more of a craftsman position than Rust (that came out of distinct industry needs).

The problem as the article illustrates, in car terms.

If Java,JS,etc are mostly "regular safe cars" and C/C++ a two wheel motorcycle.

Rust is perhaps a rally car (fast but still a car so occupants inside are well protected) whilst Zig really is a quadbike or open wheel cart, not as unsafe as a two wheel bike since you won't slide for the smallest oil/ice patch but flipping over is still dangerous as hell.

And that takes us to the crux, so many developers who love the craft and perfection (and don't live under- or perhaps care of- financial constraints) think that "good careful" developers is all that's needed and don't see dangerous language designs as a problem.

I'm an older developer, and given that I can write "good careful code", but 90% of the time it's also a matter of time and financial constraints so I wouldn't trust mine (or anyone elses for that matter) code written under those "industry" conditions.

I think Zig has a lot of nice perks, but it was obvious from day 1 that it's very much for people that love their hacking freedom over writing code for todays hostile world.

I'm a heavy Rust user who doesn't like Zig all that much.

I browsed through the Bun code following Kelly's post, and decided to have Codex replace all my Bun usage with Deno.

Yeah I don't understand these myopic takes.

Jarred's post about Bun-Zig-Rust post was technical and polite.

Andrew's post in response was anything but that.

> Anthropic is not in the programming language market

Arguing that a product that sells itself as improving programmer productivity by writing the code for you has no stakes in "the programming language market" because it doesn't sell a programming language of its own is impressively shortsighted. Especially when the leader of a programming language has openly stated their dislike of vibecoding, critisized the industry, and the language project itself rejects PRs made with the product being sold.

The results improving the end user experience didn’t have much to do with the rewrite. Improvements in binary size and speed could be had with similar efforts on the Zig codebase. They spent extra effort to get those metrics to look good to sell the rewrite.

The memory safety aspects could be discussed. Arguably they could have had equally good memory safety by employing AI, tests and fuzzing (the Zig integrated fuzzer that the Zig team suggested they use, not just the high level fuzzing they were doing)

For this kind of project I do think using Rust is a good idea. At the very least because a project like Bun probably can benefit from a more mature language.

But I also think Andrew’s perspective of this process has been essential to understand what happened here, and though he could have been nicer with his word selection in a couple of places (he doesn’t have the clout of Linus Torvalds to get away with it), what he wrote absolutely needed to be said. I find it annoying that people dismiss it as personal attacks. If being a bad manager is the direct cause of a poor working relationship and bad engineering results, pointing it out is not a personal attacks. It’s essential context for understanding what happened.

> Anthropic is not in the programming language market;

No, they're intentionally in all the programming language markets.

Did we read the same Anthropic and Andrew Kelly's posts?

Anthropic's posts were sanctimonious, self-serving, tone-concealed delegitimisation of Zig. Kelly's post was a strategically poor but sincere individual understandably frustrated at this concealed attack, expressing his honest feelings about the situation.

Andrew Kelley mentioned that the rewrite did bring technical improvements, however those were not tied to Rust and could've been made in the Zig codebase.

Yeah and Bun and Zig are not competing in anyway as well. Zig blog post has been updated as well recently btw.

> Zig's response is a sour opinion piece full of personal attacks.

Not sure; it has some elements of personal issues, but they're followed by a rationale from the author.

Honestly, seeing the project lead (Andrew Kelly) take a stand against poor engineering practices without any equivocation makes me more inclined to want to use Zig - their values (in this regard, at least) align with mine.

He also substantiates what many of us are saying to all these "Very Senior Chief Engineer with 40 years experience" who are boasting of 10x productivity: these people aren't reading the code they are generating, and were producing slop even without AI.

You mean Anthropic has no agenda on its own? That seems a very biased analysis here. The response by Zig could be flawed (speculation, I have not reached this conclusion yet) but I don't see how this offsets Anthropic wanting to promote its AI slop here in any way, shape or form.

Stating you use Codex does not add any meaningful information to the case.