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kylecarbs

288 karma · joined November 8, 2018

https://x.com/kylecarbs
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kylecarbs··on Ask HN: What Are You Working On? (July 2026)
(joining very late to the thread, but for future readers)

Coder requires zero internet-access, many of our customers run entirely airgapped. We _currently_ create an HTTP tunnel for first-time users to their Coder instance for a smooth setup. This removes the need to expose their deployment for workspace infra (e.g. EC2 VMs) just to try it out.

We could communicate this more clearly in our UX, which I'll fix up!

kylecarbs··on Show HN: Boo – Screen-style terminal multiplexer built on libghostty
This is the exact use-case Boo is made for!
kylecarbs··on Show HN: Boo – Screen-style terminal multiplexer built on libghostty
Apologies, half of this indeed was. As I was iterating on the README this seemed apt, but I will refrain!
kylecarbs··on Show HN: Boo – Screen-style terminal multiplexer built on libghostty
Cmux is a standalone terminal. Boo is a command-line similar to screen, backed by libghostty for terminal emulation.
kylecarbs··on Show HN: Boo – screen-style terminal multiplexer built on libghostty
Just published v0.5.13 which should fix this! It seems to be a path issue. Now boo falls back to tmpdir for storing sockets.
kylecarbs··on Show HN: Boo – Screen-style terminal multiplexer built on libghostty
I want boo to be a screen replacement, not a tmux replacement. tmux gives you a whole workspace: layout, scrollback, copy mode, a status bar. screen's appeal was that it did almost none of that: sessions, a prefix key, done. boo keeps that model and swaps the emulation for libghostty so reattach actually redraws correctly.

They also compose: a boo session is just a PTY running a program, so you can run tmux inside one if you want.

kylecarbs··on Show HN: Boo – Screen-style terminal multiplexer built on libghostty
I'll take a look at this now. Thanks for reporting!
kylecarbs··on Show HN: Boo – Screen-style terminal multiplexer built on libghostty
Fair. Adding a section for this now.

screen actually works the same way architecturally: it parses all output through its own built-in terminal emulator and redraws from that state on reattach. But that emulator is decades old and lags far behind what modern programs emit. Whatever it doesn't understand gets dropped or mangled on redraw. boo swaps that layer for libghostty-vt, Ghostty's VT core, so the saved state matches what your terminal would actually display, and terminal queries get answered while detached so TUIs don't hang unattended.

tmux is great, it was just never the model I wanted. I really liked screen's simplicity, sessions and a prefix key and nothing else to learn, and boo keeps exactly that.

kylecarbs··on Anthropic acquires Bun
Bun has completely changed my outlook on the JS ecosystem. Prior to Bun, there was little focus on performance. Now the entire space rallies around it.

Congrats to Jarred and the team!

kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
Taking a look now - thanks!
kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
I'll take a look - not sure what's going on. I'll remove it from the README for now since it's not working in the demos.

Thank you for letting me know!

kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
Thanks for being a user :)
kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
They are approximations but Ghostty has intentional effort towards correctness, more than I've seen from other terminal emulators.
kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
Agreed. I removed "not a JavaScript approximation of one" from the README.
kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
This is awesome, thank you!
kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
It should work! Our demo may not (as I haven't tested it, so don't want to advertise it).
kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
Added it to the README! Thanks again :)
kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
See the comparison: https://github.com/coder/ghostty-web?tab=readme-ov-file#comp...

Ghostty has much better VT100 compatibility. It should have much better performance as well once we optimize.

kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
Let me know if you encounter any issues! I'm working on performance benchmarks now.
kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
Will do this!
kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
That would be great!

`npx @ghostty-web/demo@next` starts an HTTP server on `localhost:8080`, so you could just wrap a basic Dockerfile with NPM installed (and maybe a variety of fun Linux tooling, ala vim).

Feel free to shoot me an email: kyle@coder.com. I'll happily add it to the README.

kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
It's tricky to do without a compute environment.

We can easily make a browser shell that let's people run basic commands, but presumably most want to try `vim` and other commands they'd typically invoke.

kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
I'd have to let Mitchell answer this accurately.

Considering the native Ghostty does, I _think_ the answer would be yes? I might tinker around with this and let you know.

kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
Awesome. If you happen to integrate it and find any bugs, please give us a shout!
kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
They could certainly compile Ghostty and link into it from Rust. I couldn't imagine it'd be that large of an undertaking.
kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
Yup, that's the idea!
kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
Neat. I'll take a look. Thanks Syrus!
kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
We spent little time on performance so far, this is more of a POC that will hopefully become a drop-in replacement for xterm.js over time.

I'll swap it over to the new RenderState API and post some benchmarks!

Many kudos to y'all, we were shocked how simple it was to hack this together.

kylecarbs··on Ghostty compiled to WASM with xterm.js API compatibility
I'll do this for a much improved demo!

Currently you need the command-line to try it, which is an unfortunate UX.

kylecarbs··on DDoS Botnet Aisuru Blankets US ISPs in Record DDoS
9gigsofram was prolific in the "Minecraft Server era" (2010-2016).

Source: Server Owner's Chat

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