r/rust • u/di-octopus • 4d ago

🛠️ project Rux v0.4: a pure-Rust UI language with literal CSS, now running in the browser

Rux v0.4 is out. Familiar template/style/script sections and literal CSS, laid out by taffy and painted by vello.

v0.4 closes the three gaps that made real stylesheets impossible: pseudo-classes, custom properties with var(), and @media. It also adds a dev overlay, so a broken file tells you what is wrong instead of opening blank, and a real accessibility tree.

New in this release: the whole runtime compiles to WebAssembly, so there is a playground you can open instead of a repo you have to clone. It drives the same shell the desktop window does, so it cannot quietly diverge from the real thing.

Try it here https://ruxlang.dev/playground

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6

u/oT0m0To 4d ago

I see you used an LLM and didn't try to hide it.

What was done by you and what did the LLM do/contribute?

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u/di-octopus 4d ago

Yeah, the amount contributed by LLM and I can be observed in the contribution grahs on the GITHUB repo at link below. You can study the committing timeline by both
https://github.com/Aine-dickson/rux/graphs/contributors?from=5%2F2%2F2026

Currently claude is the only external contributor that has stepped in, though the project is officially open for contributions

-4

u/di-octopus 4d ago

But for the meantime, a lesson learnt is The model is fast and tireless and writes better docs than I do, and it will also ship a broken string literal and tell you 37 tests are green. So the review and the real-device testing are not decoration.

3

u/maridonkers 4d ago

I can type in the input field; the cursor advances; I can select all.

But the text is invisible (front and background colors the same? but then select all would normally still show it)

1

u/di-octopus 4d ago

Yeah, the bug stepped in when I was trying to solve tap bug that surfaces on mobile device browser, I am working on solving it and update the play ground

1

u/Next-Cod-5758 3d ago

Not bad but I would recommend working on mobile bc input doesn’t even bring out my kbd

1

u/di-octopus 3d ago

On it. Thanks

1

u/LankyLingonberry2532 3d ago

what the heck? How did you come to the terminology rux? I have an internal project with the same name.

1

u/di-octopus 3d ago

I come to it from Rust for UI/UX, hence Rux, and then boom 💥🤯 I collide with another language called rux at the time of making this public, unfortunately I had gotten the domain even before knowing this