iiinova — where your digital self keeps evolving

Just to confirm, it is all working as expected. It compiles on Erlang/OTP 27, but not on Erlang/OTP 28. It can't really work on Erlang/OTP 28 so I appreciate you going ahead and submitting PRs for those projects.

Lars Wikman @lawik.bsky.social · 05/06/2025

Reposted by José Valim

I have been busy doing too much community and ecosystem stuff to be a good prospector and salesman. If you think I could be helpful to your business, holler. We do big picture consulting on Elixir projects and their teams as well as hands on keyboard work. #elixirlang

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Both algebra and reflection. For example, every binary has to be traversed twice, one to figure out to print it as a binary/string and another for the algebra document. Similar for maps deciding between keywords or => and so on.

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That code will always fail on Erlang/OTP 28, so we added an earlier warning, but we should probably have gated it around a OTP_RELEASE check. I will do it now. Btw, don't expect me to check bsky/twitter, this would have been seen earlier on official language channels. :)

I can confirm it is expensive, it traverses data structures, reflecting on them, then it builds an algebra document, and then it figures out the best way to format them. Although there may be some low hanging fruits somewhere.

Lucas Mendelowski @lucas.mendelowski.com · 03/06/2025

Reposted by José Valim

Join our next KRUG meetup, powered by @rubycentral.org & Fastly, with venue support from Forte Digital Talks: - Michał Papis: Code UnCov & Pluginator - @josevalim.bsky.social: Livebook - where Web, AI, and Concurrency meet 🗓️ June 10, 18:00 📍 Forte Space, Krupnicza 3, Kraków 🔗 RSVP lu.ma/0852jl2w

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Steffen Deusch @steffend.me · 30/05/2025

As we're getting ready for the first release candidate of #Phoenix #LiveView 1.1, I want to write about some of the new features and improvements we've been working on. A thread! #ElixirLang #MyElixirStatus

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José Valim @josevalim.bsky.social · 09/05/2025

Thank you! I wanted to post it here but unfortunately there is a 2 minutes limit on videos (and I didn't want to go through the hassle of uploading it somewhere else either).

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José Valim @josevalim.bsky.social · 06/05/2025

That one is on me, sorry. It was very outdated. mix xref docs is the way to go and is always up to date on latest best practices: hexdocs.pm/mix/Mix.Task...

hexdocs.pm

mix xref — Mix v1.18.3

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José Valim @josevalim.bsky.social · 02/05/2025

Cool <3 We also have a Discord server on the website in case you want to join us and chat. There is a #rails channel!

José Valim @josevalim.bsky.social · 30/04/2025

After discussing it for a bit, I am thinking a "get_package_location" should be enough, as it can then use the regular shell commands to interact with that directory. Can you try that instead?

José Valim @josevalim.bsky.social · 30/04/2025

Sweet! Would you be willing to send some PRs? I have to discuss with the team but I can say for sure the built-in get_source_location should be able to deal with gems Then next we need to find out a way to read them (it works in Elixir because packages are installed within the project root)

José Valim @josevalim.bsky.social · 29/04/2025

Introducing Tidewave: tidewave.ai While working on our web apps, we run code, query the database, read logs, search docs… but our AI tools are limited to reading code. Tidewave closes this gap by introducing Runtime Intelligence, for Phoenix and Rails. More coming soon, check out the website!

tidewave.ai

Tidewave

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Software Mansion Elixir @swmansionelixir.bsky.social · 23/04/2025

Make your LiveView development experience better – check out the first sneak peek of the upcoming features in LiveDebugger v0.2.0 🛠️ More coming soon – stay tuned! Github: github.com/software-man...

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Andrea Leopardi @whatyouhi.de · 20/04/2025

#elixir community! I’m trying to write a blog post and need some sources/data. Could you please run "mix test" on one or more of your @elixir-lang.org codebases and report results? I’m looking for: 1. # of tests 2. # of async tests 3. Total time sync 4. Total time async

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Tyler A. Young ⚗️🧑🏻‍💻 @tylerayoung.com · 16/04/2025

Wow, LiveDebugger is amaaaaaazing. It's a dev-only package that adds a little blue "bug" button in the bottom right of the screen to open a debugging dashboard. From that dashboard, you can inspect all the LiveViews running on your local server. By "inspect," I mean do things like: (🧵)

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José Valim @josevalim.bsky.social · 17/04/2025

Thank you, I was also annoyed by this!

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Lucas Vegi @lucasvegi.bsky.social · 31/03/2025

I am happy to announce that my paper "Understanding Refactorings in Elixir Functional Language", co-authored by Marco Tulio Valente has been accepted into #EMSE journal. Soon available! Again, thanks to the entire Elixir community who contributed to this research 🥳 #ElixirLang

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José Valim @josevalim.bsky.social · 31/03/2025

In that case you can fallback to the less efficient version which is first only compute the indexes (using Regex.run / :binary.matches) but then build the strings afterwards after collapsing the indexes?

regex.run

Regex dot Run: premium domain name (Buy now) - regex.run

A beautiful modern domain for a RegEx-tutorial or RegEx-testing website

José Valim @josevalim.bsky.social · 30/03/2025

I wonder if we could add it as "parts: -2", which means splitting the parts from the end?

johanna @jola.dev · 22/03/2025

Reposted by José Valim

To help promote and bring more attention to events in the Elixir community, there's now a bluesky account for elixirevents.net! As always, ideas and suggestions are super welcome! #ElixirLang

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Lars Wikman @lawik.bsky.social · 25/03/2025

Powering the Superbowl, The Olympics and Paris fashion shows with Elixir. I connected with Cyanview in my work and as I unpacked what they were up to I couldn't believe my ears. The case study is finally up. Enjoy. #superbowl #mqtt

elixir-lang.org

Cyanview: Coordinating Super Bowl’s visual fidelity with Elixir

A case study of how Elixir is being used at Cyanview.

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José Valim @josevalim.bsky.social · 25/03/2025

Fwiw, the "scaffold" generators (phx.gen.html/phx.gen.live/etc) are not using daisyUI, only the CoreComponents, so you can use them regardless if you keep or yank daisyUI from your app.

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Jaime Iniesta @jaimeiniesta.com · 10/03/2025

El próximo evento de Elixir Madrid pinta fenomenal: anuncian una nueva librería open source relacionada con Live View, y @josevalim.bsky.social contestará en directo en una sesión de Q&A. Nos vemos allí el 26 de marzo! #ElixirLang www.meetup.com/madrid-elixi...

meetup.com

Q&A con José Valim y lanzamiento relacionado con LiveView con Víctor Fernández, Wed, Mar 26, 2025, 7:00 PM | Meetup

Este evento tendrá dos partes: * Víctor Fernández presentará una librería open source desarrollada en Doofinder, centrada en LiveView. * José Valim, creador de Elixir, es

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Lars Wikman @lawik.bsky.social · 09/03/2025

Goatmire Elixir & NervesConf EU early bird tickets sold out yesterday. Regular tickets are now up. They are limited. If you know you want to go, purchase early. Hotel and travel info will come in the next two weeks. #elixirlang

goatmire.com

Goatmire Elixir & NervesConf EU

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Jonatan Männchen @maennchen.dev · 26/02/2025

Elixir now meets OpenChain (ISO/IEC 5230) standards! This milestone strengthens our commitment to open source license compliance and secure development. Get the full story and see what it means for contributors and users alike: elixir-lang.org/blog/2025/02...

elixir-lang.org

Announcing Elixir OpenChain Certification

The Elixir project now meets OpenChain (ISO/IEC 5230). Each release ships with Source SBoMs in CycloneDX 1.6 and SPDX 2.3, plus attestation.

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Lars Wikman @lawik.bsky.social · 25/02/2025

Tickets are now on sale for Goatmire Elixir and NervesConf EU. goatmire.com/#tickets I am so excited for this 3-day setup that I can't even. There is a risk the Early Bird sells out quick so get on it if you need the discount! #elixirlang

goatmire.com

Goatmire Elixir & NervesConf EU

Imagine a dark Elixir conference.

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José Valim @josevalim.bsky.social · 25/02/2025

We said we will focus on interoperability for 2025 and we are ready to share the first results. Embedding Python in Elixir, it's Fine: dashbit.co/blog/running... More updates likely at ElixirConf EU 2025 :)

dashbit.co

Embedding Python in Elixir, it's Fine - Dashbit Blog

Introducing Python interpreter embedded in Elixir and a Fine way to write your NIFs.

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José Valim @josevalim.bsky.social · 20/02/2025

Congrats to the UFMG Compiler Lab for the presentation on CGO 2025 for the presentation on compiling Elixir to eBPF: www.youtube.com/watch?v=CoFN...

youtube.com

Presentation of the paper "Honey Potion: an eBPF Backend for Elixir" (CGO'25)

YouTube video by CompilersLab

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José Valim @josevalim.bsky.social · 19/02/2025

You can find my email on GitHub! But ElixirKit should work as a dep today if you point to the repo with the sparse flag!

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José Valim @josevalim.bsky.social · 19/02/2025

I am wearing the Dashbit hat in this post! Official LSP updates will come from the Expert team!

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José Valim @josevalim.bsky.social · 19/02/2025

We, at Dashbit, just announced expansion of our subscription team and our open source goals for 2025: dashbit.co/blog/dashbit...

dashbit.co

Dashbit plans for 2025 - Dashbit Blog

Dashbit announces expansion of its subscription team and their open source goals for 2025

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José Valim @josevalim.bsky.social · 17/02/2025

I'd say Agent and GenServer sit at the same abstraction level though. The Agent may have a more concise API but the abstraction level - the concepts you need to know and understand - are roughly the same. It is mostly a style preference although agents unfortunately cannot handle info.

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Ethan Gunderson @ethangunderson.com · 28/01/2025

Can confirm that having José and team review PRs is a super power.

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José Valim @josevalim.bsky.social · 28/01/2025

Due to demand, Dashbit is increasing its consulting team for the first time! If you use Elixir, you have a team of 3+ engineers, and you want a direct line to me, Wojtek Mach (Req/Ecto), Jonatan Kłosko (Livebook/Nx) and Steffen Deusch (Phoenix/LiveView), please reach out! dashbit.co

dashbit.co

Dashbit - Boosting the Elixir ecosystem

At Dashbit, we help startups and enterprises adopt and run Elixir in production via the Elixir Development Subscription. Our goal is to advance the Elixir ecosystem through continuous adoption and sus...

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José Valim @josevalim.bsky.social · 21/01/2025

Learn how Remote become a unicorn in two years and grew from zero to a team of more than 100 Elixir engineers: elixir-lang.org/blog/2025/01...

elixir-lang.org

Remote: growing from zero to unicorn with Elixir

A case study of how Elixir is being used at Remote.

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José Valim @josevalim.bsky.social · 15/01/2025

Or spawn a process in test_helper.exs: spawn(fn -> ref = Process.monitor(MyRepo) receive do {:DOWN, ^ref, _, _, reason} -> IO.inspect(reason) end end) to tell you if it's crashing. If reason is shutdown, it's supervisor restart. Then use handle_sasl_reports to find which child causes it.

hexdocs.pm

Logger — Logger v1.18.1

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José Valim @josevalim.bsky.social · 15/01/2025

The process is most likely dead. Either a bug in Ecto or because another process in your supervision is crashing, causing it to restart the whole tree. You could enable handle_sasl_reports to print something when your supervisors act: hexdocs.pm/logger/Logge...

hexdocs.pm

Logger — Logger v1.18.1

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The challenge is to prove that your existing APIs will remain narrow for old types, and only widen for new types, which is what the article introduces: a type safe mechanism to emit such proofs.

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If it escapes, you will by definition get a typing violation, because you will pass a %Schema{name: string() or nil} to a place does not accept nils. That's the easy part and it works with the existing theory today.

The cool thing about the article (note: I'm biased!) is that it shows "type widening is only permissible in a contravariant context" can be augmented with "We can also widen the output as long as it is widened for input types not previously handled", and that's also safe! :D