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David Sancho

@david.sancho.dev
2K followers 1.1K following 1.1K posts

Open Source UI infra at @ahrefs.bsky.social with OCaml Made styled-ppx and server-reason-react Working on Reason / Melange / reason-react and friends Made styled-ppx and server-reason-react Working on reason-react / Melange / Reason

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David Sancho @david.sancho.dev · 14h
there will be a difference between a live app and a tool app. A live app, is the one that you will open, the other will be used by the llm for you
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David Sancho @david.sancho.dev · 14h
the harnesses (dot, grok bot, etc) will become the OS. Both a deterministic launcher to run apps, but as well interfaces for llms with toolcals, mcps and all our life
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David Sancho @david.sancho.dev · 28/09/2026
Last weekend was www.strava.com/activities/2... (actually the picture was on andorra more weeks ago!)
strava.com
Strava | Running, Cycling & Hiking App - Train, Track & Share
Strava connects millions of runners, cyclists, hikers, walkers and other active people through the sports they love – all on our mobile app and website.
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David Sancho @david.sancho.dev · 28/09/2026
about last weekend
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David Sancho @david.sancho.dev · 24/09/2026
oxcaml's real use case is game development, the stock thingy is just an excuse
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David Sancho @david.sancho.dev · 21/09/2026
girona is craaazy beautiful. I was there this weekend, you don't get bored of the center. I went to ciclobrava and it's a bike paradise! Can recommend for good coffee: hors categorie, La Comuna and Espresso Mafia
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David Sancho @david.sancho.dev · 21/09/2026
pov: you are spain and you do pathetic shit online once again
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David Sancho @david.sancho.dev · 18/09/2026
- removes the need for openai or claude to "please update your skills, our model is much better, balbla", it will be done automatically auto-improve is currently a skill I made for myself that runs on the background and spawns reports
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David Sancho @david.sancho.dev · 18/09/2026
harnesses should enable a hook to run auto-improve that suggests improvements in your program or in your environment to help you get better results: - propose tests, skills, different models for each task, etc - learns how you fail at some tasks, and when you succeed
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David Sancho @david.sancho.dev · 14/09/2026
Rewriting away from Rust github.com/rescript-la...
github.com
Rewrite rewatch in OCaml by cknitt · Pull Request #8653 · rescript-lang/rescript
Rewrite rewatch in OCaml Summary This PR makes an experimental OCaml rewrite of rewatch—ReScript's build system and command-line interface—the packaged rescript executable on Linux, macOS, ...
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David Sancho @david.sancho.dev · 03/09/2026
I've decided to take a break from mental health to focus on ai psychosis
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David Sancho @david.sancho.dev · 02/09/2026
it's gg to llms, nothing we can do we are cooked
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David Sancho @david.sancho.dev · 02/09/2026
2020 is going to look funny, after 2027
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David Sancho @david.sancho.dev · 20/08/2026
CSS at 0 context window > display: flex; > align-items: center; > justify-content: center; CSS after compaction > position:absolute; > left: -18.245555px; > top: -24.99999998px;; > margin-left:5.333333px; /* ajdustment */ > margin-top:…
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David Sancho @david.sancho.dev · 20/08/2026
I didn't had a good experience with pi, find opencode much better tbh
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David Sancho @david.sancho.dev · 19/08/2026
who's the tj/sindresorhus of opencode? I need a few ideas for plugins/agents
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David Sancho @david.sancho.dev · 19/08/2026
me: I work on developer tooling wise person: wait, do you mean the migrations team? me: yeah 😢 wise person: ah, so you break everyone's build on a schedule me: yeah 😢 wise person: so nobody notices your work until it's broken me: yeah 😢 wise person: looks fun me: fml 😭
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Reposted by David Sancho
Evan Czaplicki @acadia.engineering · 18/08/2026
Acadia is out today! Bringing the benefits of Elm to SQLite and PostgreSQL: - Friendly error messages - Custom types for precise column data - Simple module system for easy reuse Check it out! acadia.engineering/blog/rethink...
acadia.engineering
Rethinking Database Programming
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David Sancho @david.sancho.dev · 17/08/2026
Mandatory reminder to add the :gh-down: as an emoji to Slack so it's easier to communicate when all links to issues and prs are broken and you are mad
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David Sancho @david.sancho.dev · 06/08/2026
hey gpt, can you review the changes made by the thermo-nuclear-review, from the comments by Rabbit AI in the pr of the review of the audit of the architecture
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David Sancho @david.sancho.dev · 04/08/2026
I used to believe more, ngl
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David Sancho @david.sancho.dev · 04/08/2026
but why? I just believe in it
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David Sancho @david.sancho.dev · 04/08/2026
pov: pushing for Reason
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David Sancho @david.sancho.dev · 30/07/2026
I'm mad at Cursor, it is the only code editor that I want to use, and it keeps running away from being a code editor/diff reviewer
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David Sancho @david.sancho.dev · 29/07/2026
I need a hater, a friendly hater, but a hater. Someone who I make a post or a tweet and he dms me: "this is shit" and runs away after 2 sentences. but not a generic hater, someone who understands my shit and can argue correctly from another pov
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David Sancho @david.sancho.dev · 29/07/2026
hahahahah
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David Sancho @david.sancho.dev · 28/07/2026
someone needs to tell you, and I'm sorry it's me. I wish it wasn't me, but: some of you, have been writing slop even before AI
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David Sancho @david.sancho.dev · 28/07/2026
Riding 4 hours in Barcelona // Riding 4 hours in Andorra
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David Sancho @david.sancho.dev · 28/07/2026
Vibes are what separate us from the llms
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David Sancho @david.sancho.dev · 15/07/2026
First youtube video, explaining next release of styled-ppx. Static CSS extraction, no more runtime! www.youtube.com/watch?v=Doh...
youtube.com
Presenting styled-ppx 1.0 with CSS static extraction for OCaml
styled-ppx is a ppx and a library that brings styled components to ...
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David Sancho @david.sancho.dev · 11/07/2026
yeah, not the best shot indeed 🫣
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David Sancho @david.sancho.dev · 10/07/2026
my youtuber era has started, video dropping soon
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David Sancho @david.sancho.dev · 09/07/2026
in 2026 you can rewrite your big project like TypeScript 7 or like bun you can choose which kind of engineer you are
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David Sancho @david.sancho.dev · 23/06/2026
LLM fatigue - from Jamison Dance blog but coined by Chad
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David Sancho @david.sancho.dev · 18/06/2026
over the moon rn, about to land one of the biggest migrations I've ever done... a PR that's been open since 11th of November ripped the emotion runtime out of styled-ppx and moved into a static extraction at compile-time. super fun to build. but the migration was a big mountain
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Reposted by David Sancho
BOB Konferenz @bobkonf.de · 08/06/2026
Video of Paul-Elliot's #BOBkonf2026 talk "Undoable Monad" is now up! bobkonf.de/2026/paul-el...
bobkonf.de
BOB - Going back in time with the Undoable Monad
BOB Konferenz, Best of Breed Konferenz für Software-Entwickler und Entscheider in der Softwareentwicklung.
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David Sancho @david.sancho.dev · 05/06/2026
it's not nonsensical when I spawn 10 agents and finish the work I have planned for this month in one day... while I prepare my espresso
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David Sancho @david.sancho.dev · 05/06/2026
No mention of React or Suspense on the article...
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David Sancho @david.sancho.dev · 04/06/2026
If you aren't having an identity crisis as a developer right now, are you really a dev?
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David Sancho @david.sancho.dev · 19/05/2026
Kaparthy is joining Anthropic, woa
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David Sancho @david.sancho.dev · 15/05/2026
they should be the same thing T_T
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Reposted by David Sancho
Bogdan Chadkin @trysound.io · 13/05/2026
Hey! I am open for contract or full-time work as a full-stack developer. I've worked on industrial software, real estate tech, and a visual website builder. I specialize in design systems, a11y, and UX. Previously maintained PostCSS, Rollup, and SVGO. Currently building weareonhire! on Open Social
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David Sancho @david.sancho.dev · 12/05/2026
new pfp (thanks react miami and gemini!)
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David Sancho @david.sancho.dev · 03/05/2026
how would you solve copyright ethics?
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David Sancho @david.sancho.dev · 02/05/2026
That's what Dario would say
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David Sancho @david.sancho.dev · 02/05/2026
• pushback: they shouldn’t agree in all cases and infer the real goal • multi-step reliability • cost aware: they should know when writing a Python script is better than doing it themselves
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David Sancho @david.sancho.dev · 02/05/2026
After the AI Engineer conference, I'm thinking about some problems from AI models to overcome. I got this list from the top of my head. Anything missing? • continuous learning or better memory? • long-term planning • prompt quality resilience: different prompts shouldn’t alter the outcome cont
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David Sancho @david.sancho.dev · 02/05/2026
poor minimap
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David Sancho @david.sancho.dev · 02/05/2026
tradcoding
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David Sancho @david.sancho.dev · 29/04/2026
omg, the entire channel is gold. Thanks for sharing
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