Author | Lightnews

Roger Peppe @rog.bsky.social · 14h

I love hearing war stories like this. And lock-free algorithms are _hard_!

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Roger Peppe @rog.bsky.social · 2d

for me too!

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Roger Peppe @rog.bsky.social · 2d

Intel-based Ubuntu 24.04.03, running X11.

Roger Peppe @rog.bsky.social · 2d

Is the demo meant to look like this? (Chrome 141.0.122)

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Roger Peppe @rog.bsky.social · 4d

I'm enjoying using Claude Code, but... why does it use so much CPU time when surely it's essentially just blocked on I/O almost all the time? Is it just doing some really inefficient polling or something?

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Reposted by Roger Peppe

Daniel Martí @mvdan.cc · 5d

So excited to finally share what we've been building at CUE Labs!

Proud to be on this mission with @mpvl.io, @myitcv.io, @rog.bsky.social, @hylomorphism.bsky.social, and @dominikdm.bsky.social.

A World Without Configuration Chaos: The Configuration Control Plane

Imagine a world where you can answer, with absolute confidence, the critical question: “What is the full impact of this change?” A world where configuration isn’t a source of fear, but a source of rel...

cue.dev

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Reposted by Roger Peppe

Paul Jolly @myitcv.io · 5d

Today, I'm proud to officially announce CUE Labs!

I co-founded CUE Labs with @mpvl.io to build a Configuration Control Plane, solving config chaos with CUE. Our work also provides the stewardship for the @cuelang.org open source project.

Read our launch post: cue.dev/blog/announc...

A World Without Configuration Chaos: The Configuration Control Plane

Imagine a world where you can answer, with absolute confidence, the critical question: “What is the full impact of this change?” A world where configuration isn’t a source of fear, but a source of rel...

cue.dev

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Reposted by Roger Peppe

Jeff VanderMeer @jeffvandermeer.bsky.social · 23d

This heartfelt and meaningful statement by Portland resident and author Cristina Breshears on another social media platform bears reposting here. I don't think the intent is to idealize Portland but to remind all of us what is important and why. (Posted here with permission.)

For nine nights now, the steady thrum of Black Hawk helicopters has circled over Portland. The sound is constant, invasive; a low mechanical beating above our homes. It’s expensive. It’s intimidating. And it’s unnecessary.

Our protests have been largely peaceful. There is no insurrection here. Yet this federalized military presence makes us feel like we are living in a war zone (the very kind of chaos this administration claims to be protecting us from).

The irony is painful: it is only this occupation that makes Portland feel unsafe.

Each hour of helicopter flight costs taxpayers between $2,000 and $4,000, depending on crew, fuel, and maintenance. Multiply that by multiple aircraft over multiple nights, and you’re looking at hundreds of thousands (if not millions) of dollars burned into the sky.

Meanwhile, the Woodstock Food Pantry at All Saints Episcopal Church — which feeds working families, elders, and people with disabilities — has seen its federal funding slashed by 75%. How can we justify pouring public money into intimidation while cutting aid to those who simply need to eat?

This is waste, fraud, and abuse in plain sight:
* Waste of public resources on military theatrics.
* Fraud in the name of “public safety.”
* Abuse of the communities that federal agencies claim to protect.

Portland is a Sanctuary City. A sanctuary city is not a fortress. It’s a promise — a living vow that a community will protect the dignity and safety of everyone who calls it home. It means that local governments and ordinary people alike will refuse to criminalize survival. That schools, clinics, churches, and shelters will remain safe spaces no matter who you are or where you were born. But the term reaches far beyond policy. It’s an ethic of belonging; a refusal to criminalize need, difference, or desperation.

Sanctuary isn’t weakness. It’s courage. It takes moral strength to meet suffering with care instead of punishment, to believe that our neighbors’ safety is bound up in our own, to insist that safety is not achieved through force but through community, inclusion, and trust. It is living Matthew 25:40 out loud and in deed. It is an act of moral imagination and moral defiance. To hold sanctuary is to say: you belong here.

When we hold space for the most vulnerable — refugees, the unhoused, the undocumented, the disabled, the working poor, the displaced — we become something larger than a collection of individuals. We become a moral body. We do more than offer charity. We offer witness. We declare that the measure of a nation is found not in its towers or tanks, but in its tenderness.

Sanctuary cities are not lawless; they are soulful. They represent the conscience of the nation, a place where the laws of empathy still apply. To make sanctuary is to affirm that the United States is not merely a geographic territory, but a moral experiment: a republic that must constantly choose between fear and compassion, between domination and democracy.

A nation’s soul is measured not by the might of its military, but by the mercy of its people. When helicopters circle our skies in the name of order, while food pantries struggle to feed the hungry, we are forced to ask: What are we defending, and from whom? The soul of a nation survives only when we make sanctuary for one another. Not through walls or weapons, but through compassion and collective will. If we allow intimidation to replace compassion, we will have traded our conscience for control.

Please know that despite the hum of war machines overhead, the conscience of our city — whimsical, creative, stubbornly kind — can still be heard.

Portland is not the problem. Portland is the reminder. A reminder that a city can still choose to be sanctuary. That a people can still choose to be human.

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Roger Peppe @rog.bsky.social · 8d

"If you'd only spotted that heel hook, maybe you wouldn't have fallen at that error message check"

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Roger Peppe @rog.bsky.social · 9d

Just been mostly-vibe coding a PoC. I feel a bit like I feel when I'm on a drag lift up a ski slope: very aware how much work is being done for me. And then I get to play on the downhill after each feature is built. Lots of fun!

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Reposted by Roger Peppe

Aran Wilkinson @aran.dev · 17d

Been playing around with @cuelang.org and building a new home automation system to control my lighting and written up first post about the project still loads of other content to write though!

Big thanks to @myitcv.io @rog.bsky.social @mvdan.cc for all there help

aran.dev/posts/cue/us...

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Roger Peppe @rog.bsky.social · 23d

Brilliant! What a silly assumption to make that those two sentences were related.

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Roger Peppe @rog.bsky.social · 23d

from the spec: "Within a constant declaration, the predeclared identifier iota represents successive untyped integer constants. Its value is the index of the respective ConstSpec in that constant declaration, starting at zero." go.dev/ref/spec#Iota

The Go Programming Language Specification - The Go Programming Language

go.dev

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Roger Peppe @rog.bsky.social · 23d

... to the point where we've now got a CI rule that checks we've got no unquoted @ characters in the commit.

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Roger Peppe @rog.bsky.social · 23d

There is a user named "embed" who gets pinged every time we have a commit that mentions the @cuelang.org feature enabled with an `@embed` attribute.

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Reposted by Roger Peppe

Simon Willison @simonwillison.net · 25d

TIL Claude's new code interpreter mode has a /mnt/skills/public/ folder full of prompt instructions and Python utilities for creating and manipulating pdf, docx, pptx, xlsx files - and you can ask Claude for a copy and learn a TON about working with those formats

simonwillison.net/2025/Oct/10/...

simonw/claude-skills

One of the tips I picked up from Jesse Vincent's Claude Code Superpowers post (previously) was this: Skills are what give your agents Superpowers. The first time they really popped …

simonwillison.net

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Roger Peppe @rog.bsky.social · 25d

I honestly don't get the love for TUIs. Everything's passive apart from one tiny spot that you can only poke at with linear key presses. Is it just that they're easier to code up?

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Reposted by Roger Peppe

verdverm @verdverm.com · Sep 23

I swear using @cuelang.org is like having superpowers

Just CUE-ified the lexicon for permissioned spaces, so much easier to have consistency and readability. The JSON form is generated into the expected directory.

github.com/blebbit/atpr...

#atdev #atprotodev @atproto.com

atproto/lexicons/com/atproto/space/flexicon at main · blebbit/atproto

Social networking technology created by Bluesky (with Blebbit patches) - blebbit/atproto

github.com

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Roger Peppe @rog.bsky.social · Sep 13

I was back home at my parents' place recently and, thinking of your interests, took a photo of my old bookshelf there, a snapshot in time from about 1990...

Three shelves of rather sun-faded sf paperbacks, featuring many Heinlein, Asimov and other vintage favourites.

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Roger Peppe @rog.bsky.social · Aug 14

I suspect an LLM could do a decent first cut here.

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Roger Peppe @rog.bsky.social · Aug 14

My main initial feedback is that pkg.go.dev/github.com/m... could really do with a high level overview introducing the user to the main concepts involved. Godoc inevitably puts all the exported symbols at the same level, but some are definitely more important than others!

genai package - github.com/maruel/genai - Go Packages

pkg.go.dev

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Roger Peppe @rog.bsky.social · Aug 14

I wrote this a while ago, which I quite like: pkg.go.dev/github.com/r...
I've been wondering about whether it could be done nicely as an iterator.

retry package - github.com/rogpeppe/retry - Go Packages

pkg.go.dev

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Roger Peppe @rog.bsky.social · Aug 10

Nice! I've been wanting something like this. Looking forward to exploring the Go API.

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Roger Peppe @rog.bsky.social · Aug 10

Cool! I'd be really interested to see a full explanation of this table with full descriptions of the columns and the various emoji...

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Roger Peppe @rog.bsky.social · Aug 8

> The law classes us as second class citizens.
Woah, I did not realise that! That's terrible - could you explain a bit more about that to a complete non-US-based outsider?

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