I don't know if it's a good fit. Not because they're writing a browser engine in Rust (good), but because Ladybird praises CPP/Swift currently and have no idea what the contributor's stance is.
At least contributing will be a lot nicer from my end, because my PR's to Ladybird have been bad due to having no CPP experience. I had no idea what I was doing.
The article fails to explain why. What problems (besides the obvious) have been found in which "memory-safe languages" can help. Do these problems actually explain the need of adding complexity to a project like this by adding another language?
I guess AI will be involved which, at this early point in the project would make ladybird a lot less interested (at least to me).
This is the way. Coding assistants are also really great at porting from one language to the other, especially if you have existing tests.
Correct me if I’m wrong since I don’t know these two languages, but like some other languages, doing things the idiomatic way could be dramatically different. Is “cleanup” doing a lot of heavy lifting here? Could that also mean another complete rewrite from scratch?
A startup switching languages after years of development is usually a big red flag. “We are rewriting it in X” posts always preceded “We are shutting down”. I wish them luck though!
But Rust doesn't have C++ interop at all?
I decided to create a Claude skill called "teach". When I enable it, Claude never writes any code. It just gives me hints - progressively more detailed if I am stuck. Then it reviews what I write.
I am finding it very satisfying to work this way - Rust in particular is a language where there's little space to "wing it". Most language features are interlaced with each other and having an LLM supporting me helps a lot. "Let's not declare a type for this right now, we would have to deal with several lifetime issues, let's add a note to the plan and revisit this later".
Startups are not a good comparison here. They have a different relationship with code than software projects.
Linux has rewriten entire stacks over and over again.
The PHP engine was rewritten completely at least twice.
The musl libc had entire components rewritten basically from scratch and later integrated.
I use AI more and more. Goes like create me classes A,B,C with such and such descriptive names, take this state machine / flowchart description to understand the flow and use this particular sets of helpers declared in modules XYZ
I then test the code and then go over and look at any un-optimal and other patterns I prefer not to have and asking to change those.
After couple of iterations code usually shines. I also cross check final results against various LLMs just in case
Adding the "with help from AI" almost always devolves the discussion from that to "developers must adopt AI or else!" on the one hand and "society is being destroyed by slop!" on the other, so as long as that's not happening I'm not complaining about the editorialized title.
Firefox is a mixed C++ / Rust codebase with a relatively close coupling between Rust and C++ components in places (layout/dom/script are in C++ while style is in Rust, and a mix of WebRender (Rust) and Skia (C++) are used for rendering with C++ glue code)
It also doesn't have the disadvantages of Swift. Once the promise of Swift/C++ interop is gone there isn't enough left to recommend it.
Personally my sweet spot for LLM usage is for such tasks, and they can do a much better job unpacking the prompt and getting it done quickly.
In fact, there's a few codebases at my workplace that are quite shit, and I'm looking forward to make my proposal to refactor these. Prior to LLMs, I'm sure I'd have been laughed off, but now it's much more practical to achieve this.
In the hands of experienced devs, AI increases coding speed with minimal impact to quality. That's your differentiator.
All of them are moving into the direction of "less human involved and agents do more", while what I really want is better tooling for me to work closer with AI and be better at reviewing/steering it, and be more involved. I don't want "Fire one prompt and get somewhat working code", I want a UX tailored for long sessions with back and forth, letting me leverage my skills, rather than agents trying to emulate what I already can do myself.
It was said a long time ago about computing in general, but more fitting than ever, "Augmenting the human intellect" is what we should aim for, not replacing the human intellect. IA ("Intelligence amplification") rather than AI.
But I'm guessing the target market for such tools would be much smaller, basically would require you to already understand software development, and know what you want, while all AI companies seem to target non-developers wanting to build software now. It's no-code all over again essentially.
If you do a rewrite you essentially put everything else on halt while rewriting.
If you keep doing feature dev on the old while another "tiger team" is doing the rewrite port then these two teams are essentially in a race against each other and the port will likely never catch up. (Depending on relative velocities)
Maybe they think that they can to this LLM assisted tools in a big bang approach quickly and then continue from there without spending too much time on it.
Would be as bad as being in a cult.
The industry hasn't come up with a simple meme-format term to explain this workflow pattern yet, so people aren't excited about it. But don't worry, we'll surely have a bullshit term for it soon, and managers everywhere will be excited. In the meantime, we can just continue doing work with these new tools.
Same thing.
Moving Ladybird from C++ to a safer more modern language is a real differentiator vs other browsers, and will probably pay dividends. Doing it now is better than doing it once ladybird is fully established.
One last point about rewrites: you can look at any industry disruptor as essentially a team that did a from-scratch rewrite of their competitors and won because the rewrite was better.
Ladybird appears to have the discipline to have recognized this: “[Rust] is not becoming the main focus of the project. We will continue developing the engine in C++, and porting subsystems to Rust will be a sidetrack that runs for a long time.”
In ~5 hours of prompting, coding, testing, tweaking, the STL outputs are 1:1 (having the original is essential for this) and it runs entirely locally once the browser has loaded.
I don’t pretend that I’m a frontend developer now but it’s the sort of thing that would have taken me at least days, probably longer if I took the time to learn how each piece worked/fitted together.
The real question is what this does to migrations that never happened because 18 months of rewrite did not pencil out. A 2-week port fundamentally changes that calculus.
I guess it's a long way off, since the LLM translation would need to be refactored into natural Rust first. But the value of it would be in that it's a real world project, and not a hypothetical "well, you could probably just...".
I wonder what kind of tech debt this brings and if the trade off will be worth whatever problems they were having with C++.
Why was there ever any expectation for Swift having good platform support outside Apple? This should have been (and was to me) already obvious when they originally announced moving to Swift.
Personally, I can’t get meaningful results unless I use the tool in a true pair-programming mode—watching it reason, plan, and execute step by step. The ability to clearly articulate exactly what you want, and how you want it done, is becoming a rare skill.
Attackers are surprisingly resilient to partial security.
I am very interested to know if this time and energy spent actually improved memory safety.
Other engineers facing the same challenges want to know!
Also worth noting that "translated from C++" Rust is totally fine as a starting point. You can incrementally make it more idiomatic later once the C++ side is retired. The Rust compiler will still catch whole classes of memory bugs even if the code reads a bit weird. That's the whole point.
I feel like you just know it’s doomed. What this is saying is “I didn’t want to and cannot review the code it generated” asking models to find mistakes never works for me. It’ll find obvious patterns, a tendency towards security mistakes, but not deep logical errors.
Testing has become 10x as important as ever.
The Jakt -> Swift -> Rust pivots look like the same thing on a different level. The initial change to Swift was surely motivated by potential industry support gain (i believe it was a dubious choice from purely engineering standpoint).
It's awe-inspiring to see how a person can carve a job for himself, leverage hobbyists'/hackers' interest and contributions, attract industry attention and sponsors all while doing the thing he likes (assuming, browsers are his thing) in a controlling position.
Can't fully rationalize the feeling, but all of this makes me slightly wary. Doesn't make it less cool to observe from a side, though.
I don't like this bit. Wouldn't it be better to decide on a memory-safe language, and then commit to it by writing all new code in Rust, or whatever. This looks like doing double the work.
My general thoughts on Rust:
- Excellent for short-lived programs that transform input A to output B
- Clunky for long-lived programs that maintain large complex object graphs
- Really impressive ecosystem
- Toxic community
> Porting LibJS
> Our first target was LibJS , Ladybird’s JavaScript engine. The lexer, parser, AST, and bytecode generator are relatively self-contained and have extensive test coverage through test262, which made them a natural starting point.
> Results
> The requirement from the start was byte-for-byte identical output from both pipelines. The result was about 25,000 lines of Rust, and the entire port took about two weeks. The same work would have taken me multiple months to do by hand.
How long until Ladybird begins to impact market dominance for Chrome and Firefox? My guess: Two years.
While rust is nice on paper, writting complex software in it is mentally consuming. You can not do it for a long time.
EDIT: bramhaag pointed out the error of my ways. Thanks bramhaag!
That's a lot of people contributing.
How many of them will be less willing to contribute in the future, and less productive when they do if a sizable portion is in Rust? Maybe there'll be more contributions and maybe there'll be less. I don't know. If you've managed to develop a community of 1200 developers who are willing to advance the project why upset the applecart?
We’ve been searching for a memory-safe programming language to replace C++ in Ladybird for a while now. We previously explored Swift, but the C++ interop never quite got there, and platform support outside the Apple ecosystem was limited. Rust is a different story. The ecosystem is far more mature for systems programming, and many of our contributors already know the language. Going forward, we are rewriting parts of Ladybird in Rust.
When we originally evaluated Rust back in 2024, we rejected it because it’s not great at C++ style OOP. The web platform object model inherits a lot of 1990s OOP flavor, with garbage collection, deep inheritance hierarchies, and so on. Rust’s ownership model is not a natural fit for that.
But after another year of treading water, it’s time to make the pragmatic choice. Rust has the ecosystem and the safety guarantees we need. Both Firefox and Chromium have already begun introducing Rust into their codebases, and we think it’s the right choice for Ladybird too.
Our first target was LibJS , Ladybird’s JavaScript engine. The lexer, parser, AST, and bytecode generator are relatively self-contained and have extensive test coverage through test262, which made them a natural starting point.
I used Claude Code and Codex for the translation. This was human-directed, not autonomous code generation. I decided what to port, in what order, and what the Rust code should look like. It was hundreds of small prompts, steering the agents where things needed to go. After the initial translation, I ran multiple passes of adversarial review, asking different models to analyze the code for mistakes and bad patterns.
The requirement from the start was byte-for-byte identical output from both pipelines. The result was about 25,000 lines of Rust, and the entire port took about two weeks. The same work would have taken me multiple months to do by hand. We’ve verified that every AST produced by the Rust parser is identical to the C++ one, and all bytecode generated by the Rust compiler is identical to the C++ compiler’s output. Zero regressions across the board:
| Test suite | Tests | Regressions |
|---|---|---|
| test262 | 52,898 | 0 |
| Ladybird regression tests | 12,461 | 0 |
No performance regressions on any of the JS benchmarks we track either.
Beyond the test suites, I’ve done extensive testing by browsing the web in a lockstep mode where both the C++ and Rust pipelines run simultaneously, verifying that output is identical for every piece of JavaScript that flows through them.
If you look at the code, you’ll notice it has a strong “translated from C++” vibe. That’s because it is translated from C++. The top priority for this first pass is compatibility with our C++ pipeline. The Rust code intentionally mimics things like the C++ register allocation patterns so that the two compilers produce identical bytecode. Correctness is a close second. We know the result isn’t idiomatic Rust, and there’s a lot that can be simplified once we’re comfortable retiring the C++ pipeline. That cleanup will come in time.
This is not becoming the main focus of the project. We will continue developing the engine in C++, and porting subsystems to Rust will be a sidetrack that runs for a long time. New Rust code will coexist with existing C++ through well-defined interop boundaries.
We want to be deliberate about which parts get ported and in what order, so the porting effort is managed by the core team. Please coordinate with us before starting any porting work so nobody wastes their time on something we can’t merge.
I know this will be a controversial move, but I believe it’s the right decision for Ladybird’s future. :^)
Andreas Kling
Founder & President
The problem was strictly how cpp is perceived as an unsafe language, and this problem rust does solve! Not being sarcastic, this truly looks like a mature take. Like, we don't know if moving to rust would improve quality or prevent vulnerabilities, here's our best effort to find out and ignore if the claim has merits for now. If the claim maintains, well, you're better prepared, if it doesn't, but the code holds similar qualities...what is the downside?
they learn Rust
it takes a couple of years
it's not that hard.
Seems like a lot of language switches in a short time frame. That'd make me super nervous working on such a project. There will be rough parts for every language and deciding seemingly on whims that 1 isn't good enough will burn a lot of time and resources.
No one wants to work with this generated, ugly, unidiomatic ball of Rust. Other than other people using AI. So you dependency AI grows and grows. It is a vicious trap.
LLM and rust rewrite together. And it does work so hopefully they get more attention and build it so I have an alternative browser to use
We’re at the point where a solid test suite and a high-quality agent can achieve impressive results in the hands of a competent coder. Yes, it will still screw up, needs careful human review and steering, etc, but there is a tangible productivity improvement. I don’t think it makes sense putting numbers on it, but for many tasks, it looks like there’s a tangible benefit.
I would say modern c++ written by someone already familiar with rust will probably be structured in a way that's extremely easy to port because you end up modeling the borrow checker in your brain.
From what I can tell from HN, Brave seems to be popular with those users who hate Google but for whatever reason hate Mozilla even more, and I suspect those will be the most likely users to switch.
Apple puts zero resources into making that claim reality, however.
They're not porting the browser itself to Rust, for the record.
> Ralph Wiggum loop
Don't forget that the Rust ecosystem around browsers is growing, Firefox already uses it for their CSS engine[0], AFAIK Chrome JPEG XL implementation is written in Rust.
So I don't see how this could be seen as a negative move, I don't think sharing libraries in C++ is as easy as in Rust.
On the rust side, the question is how much `unsafe` they used (I would hope none at all, although they don't specify).
The part that concerns me is whether this part will actually come in time or not:
> The Rust code intentionally mimics things like the C++ register allocation patterns so that the two compilers produce identical bytecode. Correctness is a close second. We know the result isn’t idiomatic Rust, and there’s a lot that can be simplified once we’re comfortable retiring the C++ pipeline. That cleanup will come in time.
Of course, it wouldn't be the first time Andreas delivered more than I expected :).
I am already using low code tooling with agents for some projects, in iPaaS products.
The truth is more simple: he's a good engineer and leader, people recognised that and offered him sponsorships, and the project took off by itself.
I suspect that'll also be what happens here. And if the use of Rust is successful, then over time more components may switch over to Rust. But each component will only ever be in one language at a time.
it is totally possible to use some strict subset of C++, which will be memory safe.
“the Rust ecosystem around browsers is growing” – in the beginning pretty much 100% of the ecosystem around Rust was browser oriented
Thankfully Servo is picking up speed again and is a great project to help support with some donations etc: https://servo.org/
I don't think this is the right response because certainly a meaningful discussion could've definitely taken place and given how they were already open to other languages which was the reason why they picked Swift in the first place.
I remember Andreas video where he talked about how people used rust in his codebase and they were so happy but later it became very difficult whereas they found with swift that it became easier to manage. That was the reason why they picked swift that time.
Certainly their goal wasn't to pick a popular language (because if that's what you want use python or JS) but rather a language that was relevant to what they were building.
So if D and Ada were relevant or not, that's the main point of discussion imo.
But what I wanted to know was about evaluation with other languages, because Andreas has written complex software.
His insight might become enriching as to shortcomings or other issues which developers not that high up in the chain, may not have encountered.
Ultimately, that will only help others to understand how to write better software or think about scalability.
I am not trying to dunk on the effort; quite the contrary. I am eager to hear more about the goals it originally set out to achieve.
It seems like it is used mostly for FFI.
The tests many of us use for how capable a model or harness is is usually based around whether they can spot logical errors readily visible to humans.
I see the opposite. New languages have more difficulty breaking into popularity due to lack of enough existing codename and ecosystems.
But in the end I can't help but feel Swift has become an absolute beast of a multi-paradigm language with even worse compile times than Rust or C++ for dubious ergonomics gains.
Have you actually used .NET on Linux/macOS? I have (both at home and work) and there isn't anything that made me think it was neglected on those platforms. Everything just works™
Ladybird is much further ahead in terms of actually rendering web pages that people use.
The biggest advantage to Servo was that it is written in Rust. This move begins to nullify that advantage as well.
Why exactly does Servo make more sense?
I hope they both succeed. But Ladybird is more likely to become a usable browser first.
However, this is where d shines. D has a mature ecosystem. Offers first class cpp abi and provides memory safety guarantees, which the blog mentioned as a primary factor. And d is similar to cpp, low barrier for cpp devs to pick up.
I agree that, this might be wrong behaviour and I don't think its any fault of rust itself which itself could be a blanket statement imo. There's nuance in both sides of discussions.
Coming to the main point, I feel like the real reason could be that rust is this sort of equilibra that the world has reached for, especially security related projects. Whether good or bad, this means that using rust would definitely lead to more contributor resources and the zeal of rustaceans can definitely be used as well and also third party libraries developed in rust although that itself is becoming a problem nowadays from what I hear from people in here who use rust sometimes (ie. too many dependencies)
Rust does seem to be good enough for this use case. I think the question could be on what D/Ada (Might I also add Nim/V/Odin) will add further to the project but I honestly agree that a fruitful discussion b/w other languages would've been certainly beneficial to the project (imo) and at the very least would've been very interesting to read personally
This is a HUUUGE reason code written in rust tended to be so much better than the original (which was probably written in c++).
Human expertise is the single most important factor and is more important than language.
Copy pasting from one language to another is way worse than complete rewrite with actual idiomatic and useful code.
Best option after proper rewrite is binding. And copy-paste with LLM comes way below these options imo.
If you look at real world, basically all value is created by boring and hated languages. Because people spent so much effort on making those languages useful, and other people spent so much effort learning and using those languages.
Don’t think anyone would prefer to work in a rust codebase that an LLM copy-pasted from c++, compared to working on a c++ codebase written by actual people that they can interact with.
I have the opposite opinion. As LLM become ubiquitous and code generation becomes cheap, the choice of language becomes more important.
The problem with LLM for me is that it is now possible to write anything using only assembly. While technically possible, who can possibly read and understand the mountain of code that it is going to generate?
I use LLM at work in Python. It can, and will, easily use hacks upon hacks to get around things.
Thus I maintain that as code generation is cheap, it is more important to constraint that code generation.
All of this assume that you care even a tiny bit about what is happening in your code. If you don't, I suppose you can keep banging the LLM to fix that binary blob for you.
IMO Rust will strike a very strong balance here for LLMs.
Long read on the topic (quite funny, covers Cluely): https://harpers.org/archive/2026/03/childs-play-sam-kriss-ai...
The Ladybird devs painted themselves in a corner when choosing C++ for a new web browser, with many anti-Rust folks claiming that "modern C++ was safe". Well...
Thankfully Servo has picked up speed again and if one wants a Rust based browser engine what better choice than the one the language was built to enable?
Its purpose is not to reinvent everything. It’s not a hype project.
But translating with automated tools is a much faster experiment.
Sometimes (not always), rewriting from scratch ends up in a big loss of time and resources and never replaces the old version.
The sort of rewrite you're talking about can work well at an early stage of a project, in the spirit of Fred Brooks's "plan to throw one away". But for a mature browser like Ladybird that's trying to not break the user experience, it's much better to have a pure translation step, and then try to improve or refactor it later.
As a very practical problem the assembly would consume the context window like no other. And another is having some static guardrails; sometimes LLMs make mistakes, and without guard rails it debugging some of them becomes quite a big workload.
So to keep things efficient, an LLM would first need to create its own programming language. I think we'll actually see some proposals for a token-effective language that has good abstraction abilities for this exact use.
I think, changes to languages/tooling to accomodate Agentic loops will become important.
> All of this assume that you care even a tiny bit about what is happening in your code. If you don't...
I mean, as software engineers, we most certainly do. I suspect there'll be a new class of "developers" who will have their own way of making software, dealing with bugs, building debugging tools that suit their SDLC etc. LLMs will be to software development what Relativity was to Astrophysics, imo: A fundamental & permanent shift.
This doesn't mean that being agentic cannot be cultivated by regular people.
In 2026, yes, agency matters more than skill/wisdom/intelligence to get VC funds. But what's the point of agency alone if you are leading such a life?
What gives me hope is that in 2026, skillful people can delegate a lot of their work to LLMs, which gives them time to learn the "agentic" part which is basically marketing and talking with people.
(just thinking out loud)
That choice was never made. C++ was selrcted as the language of choice for SerenityOS. Since the goal of the OS was to make its founder happy, and C++ was his faviourite language at the time, that seems like an obvious choice. Later, as part of SerenityOS, there was a need for an HTML parser. It was written in C++ as was the rest of the operating system. Then that HTML parser evolved into a full web browser. As part of the SerenityOS project, that browser was written completely in C++. Then that web browser forked off into an independent project...
Ladybird was already a fully functioning browser (not finished of course but complete enough to surf many web pages) when it was forked from SerenityOS to create a stand-alone web browser. The choice at that point was "keep evolving the current C++ code base" or start-over. I doubt the second option was even considered.
They have been evaluating other languages since before the fork. Rust was evaluated and rejectd early-on. They even created their own language at one point. https://github.com/SerenityOS/jakt
But I'm also cheering along Ladybird's progress. There's definitely room for more than one project in the space. And IMO the more browsers being built in Rust in the better.
https://github.com/anthropics/claude-plugins-official/pull/1...
This completely misses the purpose of the downvoting feature, which is not surprising, since upvoting seems no longer to indicate quality or truth of the comment neither.
> rust is this sort of equilibra that the world has reached for, especially security related projects
Which is amazing, since Rust only covers a fraction of safety/security concerns covered by Ada/SPARK. Of course this language has some legacy issues (e.g. the physical separation of interface and body in two separate files; we have better solutions today), but it is still in development and more robust than the C/C++ (and likely Rust) toolchain. And in the age of LLMs, robustness and features of a toolchain should matter more than the language syntax/semantics.
> Rust does seem to be good enough for this use case.
If you compare it to the very recend C++ implementations they are using, I tend to agree. But if you compare it to a much more mature technology like e.g. Ada, I have my doubts.
You get to good at schmoozing the compiler you start to create actual logical bugs faster.
Hardly much different than dealing with traditional offshoring projects output.
Perhaps, but in fairness the project was started in 2018 when Rust was still new and unproven.
> You can't compare the choices made to evolve a >20 years old codebase with a brand new one.
I guess not, but I'm pretty optimistic about Ladybird's ability to adopt Rust if they want to. It's a much smaller codebase than Firefox (~650K LoC).
This initial PR is already ~25k LoC, so approximately 4% of the codebase. It took 1 person 2 weeks to complete. If you extrapolate from that, it would take 1 person-year to port the whole thing, which is not so bad considering that you could spread that work out over multiple years and multiple people.
And Firefox has shown that the intermediate state where you have a mix of languages is viable over the long term, even in a much larger and more complex codebase.
Yep, it was also a weird, not entirely pragmatic choice, even if it was well justified technically and all-in-all rational. D would be the same.
Does it make sense compared to C#, Go, Rust or a JVM language? I don't know, but it's there, and Apple put some resources behind the initiative.
"Downvote for disagree" has been canonicalized on HN since (nearly) the beginning, by pg himself, back when he used his real-name account to comment. :)
I agree that it has undesirable consequences, but it is fully established.
I agree with you in the sense that it would've definitely been interesting to read what Andreas thinks of Ada/D and the discussion surrounding it and your overall comment too.
I do wish that anyone from ladybird team/maybe even Andreas if he's on HN (not sure) could respond to the original query if possible.
I remember ladybird had a discord server I once joined, perhaps someone from the community could ask Andreas about it there if possible since It would be genuinely fascinating to read.
Although a point I am worried about is if Ladybird changes the language again let's say after a discussion of using Ada/D. It might be awkward.
But testing in Python is so easy to abuse as LLM. It will create mocks upon mocks of classes and dynamically patch functions to get things going. Its hell to review.
Rust was already proven in 2018, and I'm pretty sure they went with C++ for other reasons.
I don't understand what you mean. Beat any language at what? Correctness? I don't think that's true at all, but I also don't see how that's relevant, it definitely doesn't address the fact that Rust will virtually always produce faster code than the majority of other languages.
> Hardly much different than dealing with traditional offshoring projects output.
I don't know what you mean here either.
In the time of good LLMs this is likely no longer a show-stopper (as e.g. the specific formating rules in C/C++ since there are good re-formating tools). The question is how long we will need programming languages at all. They were primarily invented because large assembler projects were too challenging for most people. But if all the complicated details can now be delegated to LLMs, strictly speaking, we no longer need programming languages either.
Also there is the alternative path to execute code via agents workestration, just like low code tooling work.
I see you never had the fortune to review code provided by cheap offshoring teams.
I guess that's sort of technically true, but not even really? Like, obviously you can compile Python to C and then compile that with clang, but it doesn't make it fast. But even if that were the case, there aren't that many languages that have Rust performance so who cares? "Potentially" is sort of saying we might have a future language that's better, but of course anyone would agree.
> Also there is the alternative path to execute code via agents workestration, just like low code tooling work.
I don't understand how this is relevant.
> I see you never had the fortune to review code provided by cheap offshoring teams.
I just don't understand why you're bringing it up tbh I don't understand the relevance.
Plenty of AI based tooling is already trying out this path.
Agents execute actions that in the past would be manually programmed applications, now tasks can be automated given a few mcp endpoints.
LLMs are already at the same output quality of lousy offshoring companies, thus having to fix a bit of it is something that unfortunately many of us are already used with fellow humans.
> Well, I am on the provocative side that as AI tooling matures current programming languages will slowly become irrelevant.
And I said I disagree because language directly impacts things like performance. And it does, massively. Like, order of magnitude differences are not hard to achieve simply by changing language.
You are now saying that things just need to be "fast enough", but I don't get how that's relevant. The point is that a different language will have different tradeoffs, and AI changes some of the calculus there, but language is still a major component of the produced artifact. If you agree that language has major implications on the produced artifact, then we agree. If you don't, then I'll just once again appeal to the massive performance gaps between different languages.
I still am not understanding the offshoaring conversation.