OTP 28.5 secure coding guidelines Lot's of goodies. Practical advice. Learning. www.erlang.org/doc/system/s... #elixirlang

lucumr.pocoo.org/2026/3/5/the... and blog.cloudflare.com/vinext/

PhoenixTest v0.10.0 is released! It's got a lot of things, and (I think) none from me! A huge thanks for all who contributed! 🥳 hexdocs.pm/phoenix_test... 📚 Changelog: hexdocs.pm/phoenix_test... #ElixirLang

## You're not alone Other agents may be running (beans in-progress). Pick next bean that won't lead to edit conflicts. Ignore other changes in git - commit your changes only. Run tests with random `PORT=4xxx` env var. --- codex: PORT=4$((RANDOM%900+100)) mix test #elixirlang

The more I'm leaning into AI in everyday coding work, the more I'm enjoying typespecs. Goes to show that the Elixir type system WIP is right on time. #elixirlang

AshAdmin 1.0rc is out, with a complete UI overhaul, a rework of our markdown/json editor to code mirror, and features for more convenient relationship management and multitenancy drop-down/typeahead 🎉 #AshFramework #ElixirLang

“Helsinki hasn’t registered a single traffic-related fatality in the past year…Citing data that shows the risk of pedestrian fatality is cut in half by reducing a car’s speed from 40 to 30km/hr, city officials imposed the lower limit in most of Helsinki’s residential areas and city center in 2021.”

Exploring 1. Synergy effect of vertical integration: browser driver doubles as HTML spec oracle for live/static driver tests. 2. Webdriver BiDi instead of playwright (more like cuprite) #elixirlang

Agent assisted dev is even addictive (think: hard drugs) than regular coding already was. Imagine the worldwide immediate cold withdrawal symptoms (provider outage, steep price increase).

easel-demo.fly.dev/clock This is cool. Takes me back to canvas (turtle) based computer graphics in high school days. #elixirlang

phoenix_test_playwright v0.12.0 released 🥳 Shorthand to eval JS in browser, assert_path fixes for LiveView navigations, and more. Also ships with usage-rules.md for LLM coding agents. 🤖 #elixirlang

> `isolate` solves nearly very z-index problem you've ever run into Adam Wathan youtu.be/MrzrSFbxW7M?...

Apparently, there is a fancy word to describe why you can tell AI had a hand in writing some copy (the feeling of what you imagine chewing sand would taste like): semantic ablation www.theregister.com/2026/02/16/s...

What a great idea!

Rewrote ultimate.ftes.de from JS to Elixir 🎸 It's a free tool to convert music chordsheets (UltimateGuitar → ChordPro, LaTeX, etc.). Ported ChordsheetJS to Elixir with Claude Code — surprisingly few manual interventions needed. Now on Phoenix and finally motivated to build new features! #elixirlang

Seems like Tidewave can't access test deps, e.g. phoenix_test docs. Because it's running in dev env. Or is it just me? #elixirlang

"How AI Impacts Skill Formation" from Anthropic researchers: > We find that AI use impairs conceptual understanding, code reading, and debugging abilities, without delivering significant efficiency gains on average. (Continued) arxiv.org/pdf/2601.20245

Playwright remote server support (websocket) for phoenix_test_playwright 🥳 Looking for early feedback — especially around CI setups. "Remote server playbook" for the docs. Please give the main branch a spin: github.com/ftes/phoenix... Hat tip to Carson and Tyler! #elixirlang

phoenix_test_playwright 0.10.1 released 🥳 Small macro, big effect 🪄: step/3 groups trace actions and AUTOMATICALLY links to source code line Big thanks to @nathanl for adding this! #elixirlang

TIL Oban's unique job period uses fixed time windows, not sliding windows. A job with unique: [period: {7, :days}] can still allow duplicates 2 days apart if they fall into different buckets. If you need sliding windows, use a custom query. ftes.de/articles/202... #elixirlang #oban

Speaking publicly about Elixir stuff (conference talks + podcasts) has gotten me every job I've had since 2020. (And that first one was a 50% pay bump.) I interview pretty poorly, but having been seen being smart in public got me the foot in the door I needed to prove I could do the work.

OpenAI aren't talking about it yet, but it turns out they've adopted Anthropic's brilliant "skills" mechanism in a big way Skills are now live in both ChatGPT and their Codex CLI tool, I wrote up some detailed notes on how they work so far here: simonwillison.net/2025/Dec/12/...

This is SO good 🤣

Oh, I didn't expect this 😯

This is huge for accessibility! #accessibility #ElixirLang tidewave.ai/blog/improvi...

News includes Elixir 1.19.3 release, Tidewave Web adding Claude Code and Codex support, Hologram’s #JavaScript porting initiative, new pg_large_objects and playwright_ex libraries, TIOBE language index rankings, and more! #ElixirLang www.youtube.com/watch?v=2a48...

www.ufried.com/blog/ironies... applies this 1983 paper to AI. Fascinating parallels! ckrybus.com/static/paper...

Goto Mix docs example app: NOT a to-do app. But a distributed key value store. The primagen approves 😁 #elixirlang youtube.com/shorts/7zMUh...

Bump phoenix to debian trixie #elixirlang phoenix generator diff: github.com/phoenixframe...

🎉 phoenix_test_playwright 0.10.0-rc.0 released Breaking changes - if you are reaching beyond the PhoenixTest API into internals. Upside: Browser pooling by default. Well documented, consistent PlaywrightEx API for advanced use cases. Early adopters ftw! hexdocs.pm/phoenix_test... #elixirlang

🎉 playwright_ex 0.2 released Focus: documentation and consistency Added docs and typespecs Ensured API consistency, especially 'Channel' modules (browser, frame, ...) #elixirlang hexdocs.pm/playwright_ex/

Your daily reminder that the fossil fuel industry is propped up by billions of dollars in U.S. government subsidies and a multimillion dollar campaign to spread climate disinformation. 💵

Hey Elixir friends! :) We need help completing Elixir's browser runtime by porting some Erlang functions to JavaScript. No Erlang knowledge required. Each function unlocks multiple Elixir stdlib functions! More here: hologram.page/blog/elixir-... #Hologram #Elixir #ElixirLang #BEAM #WebDev

Tinkering: phoenix_test browser based tests with WebDriver bidi. Using butterbee lib (#gleamlang). github.com/germsvel/pho... #elixirlang

We didn’t expect such a big response this year, and we love to see it. If you haven’t filled it in yet, you now have time until November 18. 💜 elixir-survey.typeform.com/2025-edition #elixir #elixirlang #myelixirstatus #elixirprogramming

I present: playwright_ex A simple Playwright client for #elixirlang. Experimental. Extracted from phoenix_test_playwright. PRs welcome! It's not comprehensive, because that's a daunting task (see playwright-elixir). But it should be easy to add anything that's missing. hexdocs.pm/playwright_ex/

#ElixirConfEU call for talks is open (Apr 23-24, Malaga). I submitted: Changeset driven forms. Interested? Which aspects should I focus on? 👇 #elixirlang www.elixirconf.eu

News includes ReqLLM 1.0 with standardized LLM APIs, Codicil bringing semantic code understanding to #AI assistants, Tidewave Web expanding to #Python and more, playwright browser pooling, and #PostgreSQL WAL for DB notifications! #ElixirLang www.youtube.com/watch?v=tXp8...

Refactored: Converted PhoenixTest.Playwright.Connection from GenServer to :gen_statem. So much more expressive for this use case. Thanks @Coby Benveniste for the inspiraton at #codebeam. Even though this isn't AI related. github.com/ftes/phoenix... #elixirlang

Who do you know who wants to come work full time on #ElixirLang OSS tooling? (Boosts appreciated!) jump.ai/careers?ashb... #ElixirJobs

"Micro services only exist because people don't know about the BEAM." "BEAM is like Kubernetes but with fewer meetings". Erik Stenman #elixirlang

Deciding on my CodeBEAM Europe agenda. Still some conflicts I need to resolve. Any tips? And wow, are there a lot of interesting #Gleam talks. Hadn't planned for this, but looks like I'll be learning some more Gleam. #elixirlang

Sweet. mix hex.search hex.pm/blog/announc... #elixirlang

Call for feedback: phoenix_test_plawright browser pooling Please run locally & in CI. Useful? Stable? Configurable to your needs? github.com/ftes/phoenix... #elixirlang

Surprising ⚡️: Performance of phoenix_test_playwright already pretty good. Compared to official javascript client. Many tests: browser re-use (experimental) brings slight boost. Unclear if worth the complexity. Do you need it? github.com/ftes/phoenix... #elixirlang

phoenix_test 💆 #elixirlang

Any hints on how to implement resource sharing in ExUnit tests? For phoenix_test_playwright, I want shared browser instances. Browser pool, each test module has to wait for available browser in `setup_all`. github.com/ftes/phoenix... Have you seen/implemented something similar before? #elixirlang

What happened that led to drastic drop of hex.pm downloads roughly 2 weeks ago? #elixirlang

"Let it Crash - Designing Robust Systems" Our talk included a Live Demo with audience participation. 👇 More details about what Marcus and I did at Dev Connect OWL. ftes.de/articles/202... #elixirlang