Heaven is where the compile speed is from Go, the safety from Rust, the performance from C++, the libraries from Python, the macros from Lisp, the stability from Java, the types from Haskell, the ubiquity from JavaScript, and the error handling from Elm.
Hell is where the compile speed is from Rust, the safety from C++, the performance from Python, the libraries from Lisp, the macros from Java, the stability from Haskell, the types from JavaScript, the ubiquity from Elm, and the error handling from Go.
In this article, we will integrate Fluxpinel into a Rails application converted for Spinel using Roundhouse and take a look inside a running server via a socket.
Replying to @hasumikin
「ダイナミックSpinel(3) Railsコンソール編」
RoundhouseとSpinelがビルドしたRailsアプリの中に入ろう
hasumikin.com/2026/10/24/flu…
Sam Ruby retweeted
Transpiler update:
Compiling an internal Rails API into a single native binary with #roundhouse + #Spinel.
Today: 16 PRs merged upstream, 6 issues filed.
• Binary builds ✅
• Gaps the compiler can't model: 39 → 25 (−36%)
• 111/173 routes answer like Rails
• Mastodon as a 2nd test app: 65 → 60 gaps
Sam Ruby retweeted
Just released Prism v2.0.0.
For the first time ever, Prism has no open issues, PRs, discussions, or redmine tickets.
A couple of highlights below.
I did a thing.
Sam Ruby has helped shape the web for decades, and @GregMolnar and I got an hour with him on episode 3 of the @PingbackPodcast.
I'm extremely honored. Thanks, @samruby.
pingbackpodcast.com/episodes…
You can find the Dockerfile that can be used to deploy Campfire here: rubys.github.io/roundhouse/a…
We talked about Roundhouse and Spinel on the pod last week with @joelga and @RaulOnRails. Spoiler alert, we will be talking about it again tomorrow! Stay tuned!
Consequence? Both Spinel and Roundhouse started before Rails World.
the words of @dhh triggered Ruby people but the consequence is that we improve the Ruby tooling now - spinel and roundhouse are good examples
Replying to @samruby
But those projects did get more attention after rails world, don't you think ? I figure you'd have the data ...
Anyway, truth < storytelling.
Pure poetry. "Why even spend precious tokens on improving the gardens we already live in if you can raze them to the ground and replace them with glorious concrete?"
A renaissance, you just have to make a modicum of effort to see it - and a tiny bit more to enjoy it. We are living in the Weimar era of Ruby blog.julik.nl/2026/10/the-we…
With reverence to @samruby @schwad_rb @mhenrixon @yo_waka and others
Sam Ruby retweeted
Compiling a real production @rzilient_club Rails API into a single native binary with #roundhouse + #Spinel (AOT Ruby → C):
it now builds, boots and serves, with responses checked field by field against Rails. Along the way: 69 PRs merged into roundhouse and 31 Spinel bugs filed (all 31 fixed).
Next: a full route-by-route comparison against Rails. And for Mastodon, following @samruby 's advice, the new Futamura target, keep Rails and the gems, then profile and specialize the hot spots.
Whole Routes in a Box: the hope/plan is to enable moving an application from Rails to Roundhouse one route at a time. intertwingly.net/blog/2026/1…
My read: this is what happens when you treat LLMs as "clankers". I don't name my LLMs, but I sense those that do will get better results. I use Claude as a peer that just happens to be smarter than me. My role is closer to "managing up". Those are the skills to have.
Replying to @josevalim
Also, to clarify, Redis is just one of several checks that are being enforced differently across languages. So we are effectively measuring how AI can evolve different languages, with different prompts, with different baselines, with different efforts, and different guarantees. GG.
Sam Ruby retweeted
When you think about a Ruby on Rails conference in India, what do you imagine? 💃💃💃Of course we danced, and not only on stage! At @hideccanqueen 🔥
Sam Ruby retweeted
I often use Data class like that.
Roundhouse (by @samruby) didn’t support it yet, so I have prepared a PR to fix it.
github.com/rubys/roundhouse/…
Thanks to @thomasklemm for the help with merging here!
Sam Ruby retweeted
ZJIT is now as fast as YJIT railsatscale.com/2026-10-09-…


















