(cache)Stan Lo (@st0012.dev)

‪Rafael França‬ ‪@rmfranca.bsky.social‬

· 8d

My team is hiring a manager to lead one of our team of engineers working in the infrastructure for the Ruby language and the Rails framework. Come work with us! www.shopify.com/careers/engi...

Engineering Manager- Ruby and Rails Infrastructure

ARE YOU READY? Join the fully-remote rocketship. Find your next quest to make commerce better for everyone. Unlimited growth. Crafters and hard workers only. Apply within.

www.shopify.com

· 11d

RDoc server mode with live reload is almost ready for ruby/ruby. Currently `make html` takes 30-60s and you have to rerun it after every change. With `make html-server`, you get instant live reload. (Just found a bug with page links, but it's getting there) Here is a demo:

An error occurred while loading the video. Please try again.

March was a productive month across several projects. On the RDoc side, I focused on making server mode reliable and started work on RBS type signatures in d...

· 11d

This is part of my March update. I also got accepted into Anthropic's Claude for Open Source program, and welcomed a new GitHub sponsor! Both of which I deeply appreciate 🙏 More RDoc improvements (RBS signatures, coverage) are coming too. st0012.dev/updates/marc...

March 2026

· 12d

WIP: adding rbs sigs to Ruby documentation

‪Janko Marohnić‬ ‪@janko.io‬

· 14d

First Ruby LSP beta got released with partial migration to Rubydex 👀 github.com/Shopify/ruby... Indexing our Rails application (+ dependencies) currently takes 12s with Ruby LSP's internal indexer. Rubydex does it in 2s 💯 And I think it's even doing more work.

https://github.com/Shopify/ruby..

‪Richard Schneeman‬ ‪@schneems.bsky.social‬

· 15d

I joined RubyCentral to release a postmortem, and today I'm delivering my report on what happened. The hope is to provide more transparency and closure, 194 days since the incident on September 18. I've named the incident "RubyGems Fracture." Read my report. #ruby rubycentral.org/news/rubygem...

https://rubycentral.org/news/rubygems-

rubycentral.org

GitHub - st0012/cctop: A keyboard-first menubar app to monitor and jump between Claude Code and opencode sessions — minimum setup required.

· 22d

🙌

‪Janko Marohnić‬

‪@janko.io‬

· 22d

I finally made it, I'm running 3 Claude Code instances in parallel with cctop by @st0012.dev to monitor them. github.com/st0012/cctop The context switching is killing me. But I'm officially an AI developer.

A keyboard-first menubar app to monitor and jump between Claude Code and opencode sessions — minimum setup required. - st0012/cctop

I published my thought of "cooldown" feature of language package system: dev.to/hsbt/should-...

Should RubyGems/Bundler Have a Cooldown Feature?

I'm Hiroshi Shibata (hsbt), a Ruby committer and the maintainer of RubyGems and Bundler. ...

dev.to

‪Max‬ ‪@bernsteinbear.com‬

· 27d

New post by Jacob about recent heap modeling optimizations in ZJIT :D railsatscale.com/2026-03-18-h...

How ZJIT removes redundant object loads and stores

ZJIT’s optimizer now removes redundant object loads and stores, improving JIT performance of CRuby’s shape system. This post explains how the optimization works.

railsatscale.com

‪🤷Літ🤦 хоче спекти пасочку 👍‬ ‪@lithra.bsky.social‬

#UkrainianView I remember the news abt this Ukrainians: Mariupol Drama Theater hit. People under the rubble. russians: WE HIT AZOV NAZIS... oh shi. (delete post) Ukronazis hit Theater with civillians!!! global media: Mariupol Drama Theater is destroyed. Both sides blame each other.

‪Olena Halushka‬

‪@halushka.bsky.social‬

· 1mo

As I sit through yet another russian Shahed attack on Kyiv, I'm thinking of one of russia's most horrific crimes — the targeted destruction of the Mariupol Drama Theater four years ago today. That airstrike killed hundreds of innocent people, mostly women and children who had sought shelter there.

A small improvement coming to IRB soon:

Yesterday I released cctop v0.11.0 with a redesign and 4 color schemes! If you want a lightweight macos app to help you monitor Claude Code/opencode sessions with keyboard navigation, give cctop a try: github.com/st0012/cctop

Only my ego was hurt in the making of this video.

In February half of my time went into cctop — a macOS menubar app I built for monitoring Claude Code sessions. I have built a workflow around this small util...

My OSS projects update for February: st0012.dev/updates/febr...

February 2026

“32yr old software engineer training hard to not be replaced by AI” - week 2

Server mode with live reload is coming to RDoc:

Building something cool for my calisthenics training:

“32yr old software engineer training hard to not be replaced by AI”

I’m back to speaking at RubyKaigi this year!

It's been released! github.com/st0012/cctop...

‪Stan Lo‬

‪@st0012.dev‬

· 2mo

Per @ufuk.dev's request, OpenCode support coming soon!

Do you know RDoc now has syntax highlighting for bash command 😄

Per

@ufuk.dev

's request, OpenCode support coming soon!

‪Stan Lo‬

‪@st0012.dev‬

· 2mo

I used Claude Code to build a tool for managing CC sessions. cctop sits in macOS menubar and shows real-time status of every session: idle, working, waiting for input, or waiting for permission. You can then one click jumping to the right VS Code/Cursor window. Link 👇

GitHub - st0012/cctop: Monitor all your Claude Code sessions from the macOS menubar

It's signed and notarized by Apple, so you can directly install and use it with: ``` brew tap st0012/cctop brew install --cask cctop ``` Or learn more in: github.com/st0012/cctop

Monitor all your Claude Code sessions from the macOS menubar - st0012/cctop

Claude Code’s agents team is far more powerful than I expected. But it also requires an overhaul on existing CC skills AND some new skills to fully utilize.

Building a macOS menubar app called "cctop" to show all running CC sessions

‪antirez‬ ‪@antirez.bsky.social‬

I wrote a SPEED markdown file with instructions for Claude Code (Opus 4.6) with a loop process in order to improve the speed of the Voxtral speed with the Metal backend and left my home to pickup my daughter, have lunch, ... Back home, the code is 2x faster, and it is still going.

January was a busy month for RDoc, with a batch of improvements that align with my RDoc roadmap for 2026. I also published ruby-skills, a Claude Code plugin ...

Trying something new in 2026: I'm going to post monthly updates about the OSS work I did. Here's the first one: st0012.dev/updates/janu... (Repost as I updated the slug after posting 😅)

January 2026

I haven’t opened my PS5 since I subscribed to Claude Max a few weeks ago 🤔

*turned on instead

I built a Claude Code plugin that teaches it how to work with Ruby - picks the right version manager, reads the right docs, connects to Ruby LSP. I think we will eventually have community maintained bridges between AI agents and the language ecosystem.

Ruby Skills: Teaching Claude Code About Ruby's Tooling And Ecosystem

Here's the blog post: st0012.dev/2026/01/24/r...

Ruby developers using Claude Code hit this pattern: you ask it to run tests, it picks the wrong Ruby version, fails, tries bundle install, fails again.

GitHub - st0012/ruby-skills: Claude Code plugins for Ruby development.

Repo: github.com/st0012/ruby-...

Claude Code plugins for Ruby development. Contribute to st0012/ruby-skills development by creating an account on GitHub.

Last month we shipped Aliki, RDoc’s new default theme. It brought dark mode, better search, and a modern layout to docs.ruby-lang.org and any gem using RDoc ...

With Aliki shipped, in 2026 I'll be focusing on RDoc's writing experience: better Markdown support (some in v7.1.0 and more to come), RBS type signatures, and AI-friendly documentation. st0012.dev/2026/01/12/m...

My RDoc roadmap for 2026

Fixing My Blog from My Phone with Claude's Code Sessions (NOT Claude Code)

Over the weekend I rebuilt my blog using Claude Code. Then I tried fixing issues from my phone using Claude's Code sessions. It was a fun experience and I want to write more posts this year! st0012.dev/2026/01/11/f...

One reason I migrated my blog from a hosted solution to GitHub Pages was to see how AI agents could help me improve it and post content. So when I noticed so...

RDoc has always supported Markdown as a markup language. But its support was buggy and lacks documentation. After a year of addressing various related issues, I was able to rewrite a doc for it. I think we'll soon be able to migrate from RDoc to Markdown. ruby.github.io/rdoc/doc/mar...

AI and Open Source: A Maintainer's Take (End of 2025)

After 6 months of using AI to help me work on OSS projects—from contributing to new projects, to maintaining and drastically improving my own projects—I'm cautiously optimistic that AI tools can be positive for OSS maintenance: st0012.dev/ai-and-open-...

I'm on the cautious-optimistic side when it comes to AI coding tools and open source. I want to use this post to document my opinions on AI coding tools and OSS maintenance at this specific point. With the rate AI models and coding tools improve, I'd...

‪Victor Shepelev 🇺🇦‬ ‪@zverok.bsky.social‬

Ruby 4.0 full and annotated changelog

Just published this year's version of my "Ruby Changes" project: a full annotated changelog for Ruby 4.0: rubyreferences.github.io/rubychanges/... Goals: Full, comprehensive, concise, well-structured. Examples, explanations of reasons, links to docs, all of it.

Ruby 4.0 changes

rubyreferences.github.io

‪Max‬ ‪@bernsteinbear.com‬

ZJIT is now available in Ruby 4.0

ZJIT is available starting in Ruby 4.0! Please try it out on your test suite, maybe in a staging environment, and let us know how it goes! railsatscale.com/2025-12-24-l...

ZJIT is now available with the release of Ruby 4.0. Here’s an update of our progress.

The official Ruby documentation site is also renewal at this year. ruby-lang.org/en/news/2025... Thanks

@st0012.dev

A New Look for Ruby's Documentation | Ruby

Following the ruby-lang.org redesign, we have more news to celebrate Ruby’s 30th anniversary: docs.ruby-lang.org has a completely new look with Aliki—RDoc’s ...

ruby-lang.org

Introducing Aliki: A Modern Theme for Ruby Documentation

#rubyrelease30th I’d like to introduce Aliki, RDoc and docs.ruby-lang.org’s new theme 😄 railsatscale.com/2025-12-22-i...

Ruby’s documentation gets a fresh look. Starting with RDoc 7.0.0, Aliki is the new default theme—bringing dark mode, better search, and a modern layout to docs.ruby-lang.org and gem documentation.

I published the context and concept for redesigning www.ruby-lang.org. www.ruby-lang.org/en/news/2025...

Redesign our Site Identity | Ruby

We are excited to announce a comprehensive redesign of our site. The design for this update was created by Taeko Akatsuka.

Finally, www.ruby-lang.org/en/ has a new design.

‪Alexander Adam‬ ‪@alexanderadam.bsky.social‬

@amandabrooke.bsky.social

I'm really happy to see

@marcoroth.dev

receive the 2025 Rails Luminary Award! 🎉 He’s done so much for the Rails ecosystem and the Ruby community. Huge congrats, Marco! 🙌 And it's great to have

@fxn.bsky.social

and

around. #rails #RubyOnRails #ReActionView #herb

‪hsbt‬ ‪@hsbt.org‬

Finally, I made Ruby 30th anniversary stamp for

@therubypassport.com

You can get this at Ruby conferences that I'm going to.

‪Janko Marohnić‬ ‪@janko.io‬

Ever forget whether it's "change_table" or "alter_table", "remove_column" or "drop_column", "set_column_null" or "change_column_null"? You don't? Well, I do 😄 So, I thought it would be cool if Ruby LSP could autocomplete schema statements in migrations ✨ github.com/Shopify/ruby...

‪Lucian Ghinda‬ ‪@lucianghinda.com‬

Have you noticed how great the Ruby docs looks like for the master? docs.ruby-lang.org/en/master/ Thank you

@st0012.dev

and the entire team contributing to RDoc for these improvements.

‪Rhiannon Payne 🌙💎🌊‬ ‪@rhiannon.io‬

Ruby Around The World [Ruby on Rails Interviews]

Replied to

Rhiannon Payne 🌙💎🌊

Subscribe to Ruby Around the World if you haven’t already! ☺️ youtube.com/@rubyaroundt...

Bridging the gaps between local communities across the Ruby on Rails ecosystem, starting in Japan. SIGN UP FOR THE NEWSLETTER HERE: https://rubyaroundtheworld.com So much of Ruby’s innovation, inclu...

youtube.com

https://github.com/st0012/slides/blob/main/2025-11-06-ruby-world-conference/RubyPrize%202025.pdf

I've uploaded the slides for my RubyPrize talk @RubyWorldConf: Ruby DX - Past & Future. It's short (15min) but I summarized Ruby DX progress since Ruby 3.0, shared my thoughts on how to prepare for the AI age, and a teaser for an upcoming project 😉 github.com/st0012/slide...

Some highlights:

vm_stack_and_frames - Documentation for Ruby 4.0

Extended an existing doc to explain Ruby’s VM stack, which I learned from my ZJIT work: docs.ruby-lang.org/en/master/co...

vm_stack_and_frames: Ruby VM Stack and Frame Layout This document explains the Ruby VM stack architecture, including how the value stack (SP) and control frames (CFP) sha

docs.ruby-lang.org

My advice on top of this: Use AI to learn the codebase and explore contribution options and ideas, then write the PR manually. I also wonder if projects having some agent instructions can: - Make AI-assisted exploration more productive - Reduce fully automated vibe-coding PRs

‪Anthony Fu‬

‪@antfu.me‬

· 5mo

My first advice to junior contributors is to STOP using vibe coding for PRs. OSS is always about people more than about code. We don't need more code generated by LLM, we need more people who care.

I'm very honored to have received this year's RubyPrize from Matz's hands in Matsue last Thursday, recognizing my work on Ruby and its development tools. I can still remember how nervous I was asking Matz for a picture back in 2016 😂 Time really flies (Photo from

❤️)

This

Pistol Squat ✅

‪Marco Roth‬ ‪@marcoroth.dev‬

This just made my day! 🙏🏼 Open Source can be rough sometimes, but it's really awesome when people take the time to report how it works for them! Can't wait to see where Herb is going in the next few months! 🌿

‪Benoit Daloze‬ ‪@eregon.me‬

GitHub - eregon/ractor-shim: A shim to define Ractor by using Thread, if not already defined

Announcing ractor-shim, a new gem that reimplements Ractor on top of Thread & Queue: github.com/eregon/racto... This gem provides the full Ruby 3.5 Ractor API (Ractor::Port, Ractor#{join,value,monitor}, etc) on TruffleRuby, JRuby, and CRuby 2.7 to 3.4.

A shim to define Ractor by using Thread, if not already defined - eregon/ractor-shim

If you want to make change or add new feature to Ruby, I suggest to read www.a-k-r.org/pub/howto-pe... Ruby's decision-making process isn't democratic or based on voting. It's more like a game of persuading Matz and Module maintainers.

http://www.a-k-r.org/pub/howto-persuade-matz-rubykaigi2008.pdf

www.a-k-r.org

‪Jean Boussier‬ ‪@byroot.bsky.social‬

Frozen String Literals: Past, Present, Future?

I was recently reminded that not everyone fully understand what the frozen string literal magic comment is about. So I figured it was the occasion for another deep dive. byroot.github.io/ruby/perform...

If you are a Rubyist, you’ve likely been writing # frozen_string_literal: true at the top of most of your Ruby source code files, or at the very least, that you’ve seen it in some other projects.

byroot.github.io