The first release of Bombadil is out! github.com/antithesishq... It's still very experimental and bare bones, but we now have a specification language in TS/JS, and statically linked executables in the release package.

today is Bach day new Goldberg Variations just dropped: open.spotify.com/album/29g6SU... 11/10

let's start the week with some crisp PBT, shall we?

today is vivaldi day

getting close to the first release of Bombadil; this week brought a new TypeScript specification language with LTL operators, a std library of default properties, and a first stab at nice error messages also added examples to the readme: github.com/antithesishq...

Today I’m announcing and open-sourcing the Bombadil project — a brand new property-based browser testing framework. wickstrom.tech/2026-01-28-there-and-back-again-from-quickstrom-to-bombadil.html

Putting the baby to sleep in the stroller is like sand-walking: it has to be irregular, otherwise the little shai-hulud wakes up and swallows you whole.

UPDATE: After 18 months of sitting out a noncompete, I'm finally back working on generative testing. Not only that, I'm joining @antithesis.com next week, and I can't wait to build testing technology with such a deeply technical and committed group. Everything in its right place.

Fireplace floor protector progress! Something covering the floor cuts remaining, and of course some firewood. The finish got a little weird because of dust where I painted, but meh. The cutouts turned out so good that I didn't need to seal against the blocks. Really fun project overall!

"My primary and secondary love languages? Rust and Lean, darling."

I never realized "you build it, you run it" in DevOps is addressing two different teams. It all makes sense now.

New blog post published, on generating error messages and visualization for LTL-based testing. wickstrom.tech/2025-11-01-e...

I must not vibe. Vibe is the mind-killer. Vibe is the little-death that brings total obliteration. I will face my code. I will permit it to pass out of me and through code review. And it's past CI I will turn the inner eye to see its path to prod. Where the code has gone there will be no slop.

Working on a new blog post on LTL error messages. Monospace diagramming is fun!

Our third child process just spawned, a baby girl. Now, time for lots of context switching.

I wrote about AI and programming. About the identity challenges we are facing as programmers and the potential erasure of craft. There's a fun little easter egg in the header as well :) hojberg.xyz/the-programm...

New blog post is up! "Programming in the Sun: A Year with the Daylight Computer" wickstrom.tech/2025-10-10-p...

Finishing of new oak shelves for the kitchen. Some pigmented linseed oil/wax on them and we're good to go.

Give a man a test and he'll be good for a day; teach a man to fuzz and he'll be good for a lifetime.

New on the blog: "Finding Bugs in a Coding Agent with Lightweight DST" wickstrom.tech/2025-08-28-f...

Current status: sunshine, dusty mandolin, and arpeggios

tigerbeetle.com/blog/2025-02... On our introduction of generative end-to-end testing of the TigerBeetle database.

I'm trying out scour.ing by @emschwartz.me "Get a personalized feed of content related to your interests."

New blog post on a new topic (for my blog): "Machine: Learning; Human: Unlearning;" wickstrom.tech/2025-02-11-m...

Shelving done! Some oil finish remaining, then it's time to fill up.

Office upgrade project in progress! The bookshelf is taking shape, just need to mount it next to the IVAR cabinets and cut out the remaining shelves. Probably finishing it with linseed oil for now. Maybe paint later, but I like the fur against the olive green wall.

Sketching out my new office storage system. I love using the Daylight for these projects.

TOC and content parsing of avi.im/blag/about/ finally getting there.

I just discovered this charting lib that is pure css and semantic html. Write a <table>, slap on some classes... holy shit you have charts 🤯 One of the most inspiring cases of "use the platform" I've seen in a long time: chartscss.org

Surviving two Rust live coding interviews in one day definitely feels like a milestone. From dabbler to rookie, perhaps.

Anyone who can give permission to have their blog or site used as a test case? I need moar. Please reply with urls.

Also: taking name suggestions for this thing. `site2doc` is the working name, but I'd like something less techy and more catchy, something for the inevitable domain purchase.

How do people search nix packages? `nix search` is quite slow and bloats the screen with various eval warnings, but maybe that can be fixed? Currently I mostly run `nix repl` and poke around, and it feels very blunt.

Getting there! This is the actual output right now of my website-to-book tool running on docs.quickstrom.io, not a POC.

I think it's only a good Chrome Devtools Protocol implementation holding me back from investing into Ocaml over Rust for my current project. And it's been like that before, the Ocaml ecosystem being a bit too thin. I hope it catches up! Would love to use it more.

I've been hacking on the scraper a lot, trying to get TOC extraction robust. It now handles links in all weird directions (as often seen in Sphinx sites). No JS support yet, but that's probably coming up next. I'd be happy to receive test cases I can use.

Rust and recursive data structures. 😵 Surely a skill issue, but man...

This thing could have a Monospace Web theme... 🤔

youtu.be/-opBifFfsMY Yes.

Proof of concept using Pandoc! Here I'm converting my own blog into an ereader-friendly PDF. I'd spend a lot more time making the output beautiful, as I think that's one of the major selling points. Need to build a real crawler, possibly running a real Chrome to support JS.

Thinking about writing a tool or service that can produce PDFs or ePubs for the content of entire sites (or parts of sites). For instance, it's common that project documentation consists of multiple pages, and no single-page doc. Would be nice to bundle automatically for easy offline reading.

Holiday tweaks with linseed oil paint and old IKEA gear.

You’re still arguing about tabs vs. spaces? May I present…

Associated holiday hacking to get deeper into Rust involves a little SQL engine with WAL and B-tree implementation. Also nice to get a deeper understanding of database system problems.

Been holding on to this for a little bit now. We are running an Elixir conference. 10-12 September in Varberg, Sweden. One day of NervesConf EU and two days of Goatmire Elixir. Single track. Andrea Leopardi and Sanne Kalkman are our two first speakers. A lot more to come :) #elixirlang

Christmas reading!

@daylightco writing setup in the works. Neovim and other good stuff.

It is here. Let's see if it was worth the wait. 😁

"Reinforcing the need for defense-in-depth, we’re building an exciting new testing tool: Vöʀᴛᴇx, a full-system integration test that also covers the language clients." This is what I've been up to lately at TigerBeetle! us13.campaign-archive.com?u=32cd932058...

Distributed systems generative testing and chrome://tracing, a neat combo.