Reposted by Fredrik TeschkeSteve Klabnik @steveklabnik.com · 10/09/2026We've been cooking at @ersc.io "What comes after git" ersc.io/blog/what-co...ersc.ioWhat comes after gitOur thoughts about the future of version control 1625846
Reposted by Fredrik TeschkeMike Zornek, looking for work. @mikezornek.com · 10/09/2026👨💻 Posted some follow-up observations about phoenix_test performance. #ElixirLang TL;DR: Yes, it can be slower (because it is doing more helpful work), but `async: true` should be your first target if you're having trouble with test wall-clock time -- always. forum.elixirforum.com/t/one-pipe-o...forum.elixirforum.comOne Pipe, One User Story: The Case for phoenix_testI did some AI-sourced experiments on the performance question to scratch a personal curiosity. The main finding (not verified personally) was that, yes, there is some slowdown when using phoenix_test... 042
Fredrik Teschke @ftes.de · 10/09/2026Could someone take Fluffy for a walk? fluffy.hexdocs.pm Playwright-grounded feature tests for phoenix. Composable locators, actionability checks, browser conformance. Migrating a PhoenixTest base should be smooth sailing via Agent. Worth switching? Eliminates workarounds? Performant? #elixirlangfluffy.hexdocs.pmFluffy v0.3.0 — Documentation 010
Reposted by Fredrik TeschkeBrian Cardarella @bcardarella.bsky.social · 09/09/2026Releasing a statement about the OpenAI / Navier-Stokes drama on a university server as a PDF is the most academic shit you can do. cims.nyu.edu/~tristanb/st...cims.nyu.edu 032
Reposted by Fredrik TeschkePeter Ullrich @peterullrich.com · 08/09/2026🚨 Announcing Pushin 🚨 Now officially: I'm announcing Pushin.eu, a git hosting platform built and run entirely in Europe. Think GitHub/GitLab but European, better, and faster. Built with #ElixirLang and #RustLang. peterullrich.com/announcing-p...peterullrich.comAnnouncing PushinI'm launching Pushin.eu, a git hosting platform built and run entirely in Europe. 1114449
Fredrik Teschke @ftes.de · 02/09/2026Spot the AI mistakes. But this is incredibly good - one shot, given minimal reference video & images. #bogengaudi #arrowtag 010
Reposted by Fredrik TeschkeElixirJobs @elixirjobs.net · 02/09/2026Sr. Elixir Engineer @ Wonder / Onsite #job #ElixirLang elixirjobs.netSr. Elixir Engineer @ Wonder · Elixir JobsAbout the job About Wonder & Wonder Robotics Everything’s on the menu at Wonder. Except compromise. 001
Reposted by Fredrik TeschkeElixir Radar @elixir-radar.com · 20/08/2026#ElixirJobs 📣 Sapient Search is hiring for an Elixir developer position. Check it out: buff.ly/vqK8JTV #ElixirLanglinkedin.comhttps://www.linkedin.com/jobs/view/software-engineer-elixir-typescript-at-sapient-search-4451388264/ 022
Reposted by Fredrik TeschkePeter Ullrich @peterullrich.com · 28/07/2026🚨 Announcing our new Podcast 🚨 Gus (@gworkman.bsky.social) and I have started a new #ElixirLang Podcast Macro Mayhem - @macromayhem.fm We cover Elixir news and general industry topics every 2 weeks. Our first episode is out now, available on all podcast players or on our website: macromayhem.fmmacromayhem.fmMacro MayhemThe latest Elixir news and general software industry topics 35922
Reposted by Fredrik TeschkeElixir Radar @elixir-radar.com · 23/07/2026#ElixirJobs 📣 Vibrant Planet is hiring for an Elixir developer position. Check it out: buff.ly/0G4fcLk #ElixirLangbuff.lySoftware Engineer (App Engineer, Elixir expert)ABOUT VIBRANT PLANET We are a team of leaders in fire science, applied science, forestry, policy, and tech who work with land managers, community risk managers, utilities, and insurers to drive… 032
Reposted by Fredrik TeschkeEurosky Social @eurosky.social · 07/07/2026A message to all Eurosky members and friends We need your help - can you support Eurosky with a monthly or one-off donation? If you can, please visit whydonate.com/fundraising/... 23215131
Reposted by Fredrik TeschkeTyler A. Young ⚗️🧑🏻💻 @tylerayoung.com · 07/07/2026Two new security advisories published against Phoenix. Update your #ElixirLang dependencies to 1.5.15, 1.6.17, 1.7.24, or 1.8.9 to get the fixes. 👍 github.com/phoenixframe...github.comBuild software better, togetherGitHub is where people build software. More than 150 million people use GitHub to discover, fork, and contribute to over 420 million projects. 11710
Fredrik Teschke @ftes.de · 19/06/2026www.motedis.com/de/Heimwerken Cool. DIY kit configuration for aluminum profiles. Connected to a store. The accessories on Motedis seem to be well priced. While price for aluminum profiles are average - can definitely get cheaper elsewhere.motedis.comHeimwerken | MOTEDISFinden Sie unsere Motedis Heimwerken⚡️ 20 Jahre im Geschäft ⚡️ MOTEDIS 000
Fredrik Teschke @ftes.de · 19/06/2026phoenix_test_playwright 0.15.0 released 🎉 - 📷 assert_screenshot for snapshot testing by Wigny - support new phoenix_test checked/selected assert options - playwright 1.61 support (also update playwright_ex to 0.7.1) #elixirlang 1102
Reposted by Fredrik TeschkeKonstantin @iamkonstantin.eu · 16/06/2026So Djot is a thing and it's fascinating! It's like someone fixed the markdown bugs :D djot.net #markdown #templates #djotdjot.netdjot 072
Fredrik Teschke @ftes.de · 11/06/2026LiveView 1.2.0 released. > Ensure exceptions during LiveComponent renders are emitted as :telemetry event (#4258) Previously, LiveComponent render errors were not reported in AppSignal. 🥳🙏: I reported this to AppSignal June 1. They opened GH issue June 1. Fixed and released June 11. #elixirlangphoenix-live-view.hexdocs.pmChangelog for v1.2 — Phoenix LiveView v1.2.0 091
Reposted by Fredrik TeschkeOmas gegen Rechts Paderborn @omasgegenrechts-pb.bsky.social · 08/06/2026Tausende energiehungrige KI-Rechenzentren kommen nach Europa. Unsere Stromrechnungen könnten schnell steigen, wenn wir die Tech-Konzerne nicht verpflichten, diese mit 100 % Erneuerbaren zu betreiben. Unterschreibe jetzt👇 action.wemove.eu/sign/2026-05...action.wemove.euBetreibt EU-Rechenzentren zu 100 % mit Erneuerbaren!Tausende energiehungrige Rechenzentren entstehen derzeit in Europa. Wie hoch unsere Stromrechnungen ausfallen, hängt davon ab, womit sie betrieben werden – mit teuren fossilen Brennstoffen oder mit he... 19473177
Reposted by Fredrik TeschkeYevhenii Kurtov @yevhenii.kurtov.pro · 26/05/2026Hey guys, We are hiring for mid/senior engineers to come work with us on a health tech product ats.rippling.com/dyad/jobs/93... It's a remote role within UK due to the data governance regulations. Please share for reach. #elixirats.rippling.comSenior Software Engineer - Elixir | Dyad AI Job OpportunitiesAbout the job We are seeking a Senior Software Engineer with strong fundamentals and self-management skills to join us at a rapid growth st... 055
Reposted by Fredrik TeschkeTyler A. Young ⚗️🧑🏻💻 @tylerayoung.com · 26/05/2026jump_credo_checks v0.3.0 is out now, featuring a really nice new check courtesy of @ftes.de. UnusedLiveViewAssign will tell you if you have places where you write, but never read, a value in your LiveView assigns. 💜 hex.pm/packages/jum... #ElixirLanghex.pmjump_credo_checksA collection of opinionated Credo checks aimed at improving code quality and catching common mistakes in Elixir, Oban, and LiveView 2211
Reposted by Fredrik TeschkeJan Rosenow @janrosenow.bsky.social · 10/05/2026NEW ANALYSIS: What's going on in Spain? Spain's wholesale electricity price in early 2026: €44/MWh. Italy: €127. Germany: €96. UK: €103. Wind+solar now deliver 44% of generation. Gas sets the price in just 9% of hours, down from 55% in 2022. Full analysis: janrosenow.substack.com/p/spain-just...janrosenow.substack.comSpain just became one of Europe's cheapest power markets. Here is how.How wind and solar quietly pushed gas off the margin, and the wholesale price followed. 371907778
Reposted by Fredrik TeschkePeter Ullrich @peterullrich.com · 07/05/2026🚨 Please update "decimal" 🚨 A *single* calculation like: Decimal.new("1e1_000_000_000") |> Decimal.add(1) will OOM your application. Poof. Adios. Auf Wiedersehen. cna.erlef.org/cves/CVE-202...cna.erlef.orgUnbounded exponent in decimal enables unauthenticated DoSThis project handles the CVE Numbering Authority (CNA) for the Erlang Ecosystem Foundation (EEF). 5249
Reposted by Fredrik TeschkeSteffen Deusch @steffend.me · 05/05/2026If you’re running #Phoenix Channels (or LiveView) and have the LongPoll option enabled in your endpoint (default since 1.7.11), it’s time to do an update: github.com/phoenixframe... Thank you @peterullrich.com for finding and disclosing this issue!github.comLong-poll NDJSON body splitting causes large memory allocation in Phoenix### Summary An unauthenticated denial-of-service vulnerability in Phoenix's long-poll transport allows a remote client to allocate a large amount of memory with a HTTP request. A handful of conc... 22410
Reposted by Fredrik Teschkeronin-red.bsky.social @ronin-red.bsky.social · 30/04/2026<<“one prompt, one hour>> <<The headline isn’t the bug, it’s the find conditions.>> It’s only the beginning; there’s a race against time to tackle the zero-day vulnerability www.bugcrowd.com/blog/what-we...bugcrowd.comWhat we know about Copy Fail (CVE-2026-31431) | @BugcrowdCopy Fail is a new Linux kernel zero-day that allows any authenticated user to gain root privileges (Local Privilege Escalation, or LPE) on almost every Linux distribution since 2017. An easy-to-use e... 001
Reposted by Fredrik TeschkeTyler A. Young ⚗️🧑🏻💻 @tylerayoung.com · 27/04/2026If you're using plug_cowboy, update to the newly-released v2.8.1 to patch a denial-of-service vulnerability related to atom exhaustion. cna.erlef.org/cves/CVE-202... #ElixirLangcna.erlef.orgAtom table exhaustion via HTTP/2 :scheme pseudo-header in plug_cowboyThis project handles the CVE Numbering Authority (CNA) for the Erlang Ecosystem Foundation (EEF). 1155
Fredrik Teschke @ftes.de · 27/04/2026OTP 28.5 secure coding guidelines Lot's of goodies. Practical advice. Learning. www.erlang.org/doc/system/s... #elixirlangerlang.orgSecure Coding Guidelines — Erlang System Documentation v28.5 030
Fredrik Teschke @ftes.de · 06/03/2026lucumr.pocoo.org/2026/3/5/the... and blog.cloudflare.com/vinext/lucumr.pocoo.orgAI And The Ship of TheseusSlopforks: what happens when a library gets rewritten with AI? 020
Reposted by Fredrik TeschkeGerman Velasco @germsvel.com · 05/03/2026PhoenixTest 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... #ElixirLanghexdocs.pmPhoenixTest — PhoenixTest v0.10.0 1143
Fredrik Teschke @ftes.de · 04/03/2026## 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 010
Fredrik Teschke @ftes.de · 04/03/2026The 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 030
Reposted by Fredrik TeschkeZach Daniel @zachdaniel.dev · 02/03/2026AshAdmin 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 1285
Reposted by Fredrik TeschkeBrent Toderian @brenttoderian.bsky.social · 01/03/2026“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.”politico.euHelsinki just went a full year without a single traffic deathThe capital city is Finnish’ed with car-related fatalities. 382439826
Fredrik Teschke @ftes.de · 27/02/2026Exploring 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 141
Fredrik Teschke @ftes.de · 26/02/2026read.technically.dev/p/vibe-codin...read.technically.devVibe Coding and the Maker MovementIs your vibe-coded app a Crapject or a Gift? 000
Fredrik Teschke @ftes.de · 25/02/2026Agent 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). 020
Fredrik Teschke @ftes.de · 25/02/2026easel-demo.fly.dev/clock This is cool. Takes me back to canvas (turtle) based computer graphics in high school days. #elixirlangeasel-demo.fly.devPhxDemo · Phoenix Framework 020
Fredrik Teschke @ftes.de · 22/02/2026phoenix_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 041
Fredrik Teschke @ftes.de · 19/02/2026> `isolate` solves nearly very z-index problem you've ever run into Adam Wathan youtu.be/MrzrSFbxW7M?...youtu.beAdam Wathan on "Designing a Component Library" | Laracon US 2024 in Dallas, TXYouTube video by Laravel 100
Reposted by Fredrik TeschkeKonstantin @iamkonstantin.eu · 17/02/2026Apparently, 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...theregister.comSemantic ablation: Why AI writing is boring and dangerousopinion: The subtractive bias we're ignoring 0112
Fredrik Teschke @ftes.de · 16/02/2026Rewrote 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! #elixirlangultimate.ftes.deChord Sheet ConverterConvert chordsheets between Ultimate Guitar, ChordPro or Latex songs notation. Ultimate Guitar uses a two line format, with the chords above the lyrics and has metadata annotations such as [Verse 1]… 080
Fredrik Teschke @ftes.de · 13/02/2026Seems 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 100
Reposted by Fredrik TeschkeTyler A. Young ⚗️🧑🏻💻 @tylerayoung.com · 09/02/2026"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/2601.20245arxiv.org 4123
Fredrik Teschke @ftes.de · 06/02/2026Playwright 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! #elixirlanggithub.comAdd support for remote Playwright server via WebSocket by carsoncall · Pull Request #131 · ftes/phoenix_test_playwrightSummary This PR adds the ability to connect to a remote Playwright server via WebSocket instead of spawning a local Node.js process. This is configured via a new ws_endpoint option. The Playwright ... 052
Fredrik Teschke @ftes.de · 30/01/2026phoenix_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 051
Fredrik Teschke @ftes.de · 09/01/2026TIL 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 #obanftes.deOban unique job periods are not what you think - Fredrik TeschkeFixed windows vs sliding windows: a subtle but important difference. 0131
Reposted by Fredrik TeschkeTyler A. Young ⚗️🧑🏻💻 @tylerayoung.com · 18/12/2025Speaking 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. 1364
Reposted by Fredrik TeschkeSimon Willison @simonwillison.net · 12/12/2025OpenAI 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/...simonwillison.netOpenAI are quietly adopting skills, now available in ChatGPT and Codex CLIOne of the things that most excited me about Anthropic’s new Skills mechanism back in October is how easy it looked for other platforms to implement. A skill is just … 1121430
