Search Results: "ed"

31 October 2025

Emmanuel Kasper: Best Pick-up-and-play with a gamepad on Debian and other Linux distributions: SuperTux

After playing some 16 bits era classic games on my Mist FPGA I was wondering what I could play on my Debian desktop as a semi-casual gamer. By semi-casual I mean that if a game needs more than 30 minutes to understand the mechanics, or needs 10 buttons on the gamepad I usually drop it. After testing a dozen games available in the Debian archive my favorite Pick-up-and-play is SuperTux. SuperTux is a 2D platformer quite similar to Super Mario World or Sonic, well also 16 bits classics, but of course you play a friendly penguin. What I like in SuperTux:
  • complete free and opensource application packaged in the Debian main package repository, including all the game assets. So no fiddling around to get game data like Quake / Doom3, everything is available in the Debian repositories. The game is also available from all major Linux distributions in their standard repositories.
  • gamepad immediately usable. Probably the credits has to go the SDL library, but my 8bitdo wireless controller was usable instantly either via 2.4Ghz dongle or Bluetooth
  • well suited for casual players: the game mechanics are easy to grasp and the tutorial is excellent
  • polished interface, the menus are clear and easy to navigate, and there is no internal jargon in the default navigation till you run your first game. (Something which confused me when playing the SuperTuxKart racing game: when I was offered to leave STK I was wondering what that STK mode is. I understood afterwards STK is just the acronym of the game)
  • feel reasonably modern, the game does not start in a 640 480 window with 16 colors and you could demo it without shame for a casual gamer audience.
What can be say of the game itself ? You play a penguin who can run, shoot small fireballs, fall on your back to hit enemies harder. I played 10 levels, most levels had to be tried between 1 and 10 times which I find OK, the difficulty is raising in a very smooth curve. SuperTux has complete localization, hence my screenshots show french text. SuperTux tutorial Comprehensive in-game tutorial World Map There is a large ice flow world, but we are going underground now Example Level Good level design that you have to use to avoid those spiky enemies Underground level The point where I had to pause the game, after missing those flying wigs 15 times in a row SuperTux can be played with keyboard or gamepad, and has minimal hardware requirements, anything computer with working 3D graphic acceleration released in the last 20 years will be able to run it.

Reproducible Builds (diffoscope): diffoscope 307 released

The diffoscope maintainers are pleased to announce the release of diffoscope version 307. This version includes the following changes:
* Attempt to fix compatability with LLVM 21.
  (Closes: reproducible-builds/diffoscope#419)
* Update copyright years.
* Update CI to try and deploy to PyPI upon tagging a release.
You find out more by visiting the project homepage.

30 October 2025

Utkarsh Gupta: FOSS Activites in October 2025

Here s my monthly but brief update about the activities I ve done in the F/L/OSS world.

Debian
Whilst I didn t get a chance to do much, here s still a few things that I worked on:
  • Uploaded ruby-rack, 3.1.18-1, to fix a bunch of CVEs.
  • Asssited a few folks in getting their patches submitted via Salsa.
  • Mentoring for newcomers.
  • Moderation of -project mailing list.

Ubuntu
I joined Canonical to work on Ubuntu full-time back in February 2021. Whilst I can t give a full, detailed list of things I did, here s a quick TL;DR of what I did:

Debian (E)LTS
This month I have worked 16 hours on Debian Long Term Support (LTS) and 05 hours on its sister Extended LTS project and did the following things:
  • ruby-rack: There were multiple vulnerabilities reported leading to DoS (memory exhaustion) and proxy bypass.
    • [unstable/forky]: Uploaded a fix to unstable via 3.1.18-1 to fix 5 CVEs.
    • [trixie/bookworm]: Uploaded a fix for all 5 CVEs in trixie via 3.1.18-1~deb13u1 and 7 CVEs in bookworm via 2.2.20-0+deb12u1.
    • [LTS]: Uploaded a fix for all 7 CVEs in bullseye via 2.1.4-3+deb11u4. And released DLA 4357-1.
    • [ELTS]: Backported fixes for CVE-2025-46727 & CVE-2025-32441 to buster and stretch but the other backports are being a bit tricky due to really old versions. But I ll spend some more time there before coming to a conclusion.
  • wordpress: There were multiple vulnerabilities reported leading to Sent Data & Cross-site Scripting.
    • [bookworm]: Prepared a fix for all 4 CVEs in bookwrom via 6.1.9+dfsg1-0+deb12u1. Awaiting review from the Security team.
    • [LTS]: Uploaded a fix for all 4 CVEs in bullseye via 5.7.14+dfsg1-0+deb11u1. And released DLA 4358-1.
  • [LTS] Attended the monthly LTS meeting on Jitsi. Summary here.
  • [E/LTS] Monitored discussions on mailing lists, IRC, and all the documentation updates.

Until next time.
:wq for today.

28 October 2025

Russell Coker: Internode NBN500

I have just converted to the Internode NBN500 plan which is now the same price as the NBN100 plan. I m in a HFC area so they won t let me get fiber to the home (due to Malcolm Turnbull breaking the NBN to help Murdoch) so I m limited to what HFC can do. I first tried it out on a 100mbit card and got speeds of 96/47 mb/s according to speedtest.net. I ve always had the MTU set to 1492 for the PPPoE connection (something I forgot to mention in my blog post about connecting to the Arris CM8200 on Debian [1]) but when run on the 100mbit card I had to set it to 1488. Apparently 1488 is the number because 4 bytes are taken for the VLAN header and 8 bytes for the PPPoE header. But it seems that when using gigabit ethernet it doesn t take 4 bytes for the VLAN (comments explaining that would be appreciated). when connected via gigabit with a MTU of 1492 I got speeds of 534/46 which are quite good. When I tested with my laptop on a Wifi link while sitting next to the main node of my Kogan Wifi6 mesh [2] via 2.4GHz wifi I got 172/45. When using 5GHz I got 514/41. When using 5GHz at the far end of my home over the mesh I got 200/45. Here s a table summarising the speeds. I rounded all speeds off to 1Mbit/s because I don t think that the results are even that accurate. I think that Wifi5 over mesh reporting a faster upload speed than Wifi5 near the AP is because of random factors not an actual benefit to being further away, but I will do more tests later on.
Connection Receive Mbit/s Send Mbit/s
100baseT 96 47
Gigabit 535 46
2.4GHz Wifi 172 45
Wifi5 514 41
Wifi5 Over Mesh 200 45

Russ Allbery: Review: Those Who Wait

Review: Those Who Wait, by Haley Cass
Publisher: Haley Cass
Copyright: 2020
ISBN: 979-8-9884929-1-7
Format: Kindle
Pages: 556
Those Who Wait is a stand-alone self-published sapphic romance novel. Given the lack of connection between political figures named in this book and our reality, it's also technically an alternate history, but it will be entirely unsatisfying to anyone who reads it in that genre. Sutton Spencer is an English grad student in New York City. As the story opens, she has recently realized that she's bisexual rather than straight. She certainly has not done anything about that revelation; the very thought makes her blush. Her friend and roommate Regan, not known for either her patience or her impulse control, decides to force the issue by stealing Sutton's phone, creating a profile on a lesbian dating app, and messaging the first woman Sutton admits being attracted to. Charlotte Thompson is a highly ambitious politician, current deputy mayor of New York City for health and human services, and granddaughter of the first female president of the United States. She fully intends to become president of the United States herself. The next step on that path is an open special election for a seat in the House of Representatives. With her family political connections and the firm support of the mayor of New York City (who is also dating her brother), she thinks she has an excellent shot of winning. Charlotte is also a lesbian, something she's known since she was a teenager and which still poses serious problems for a political career. She is therefore out to her family and a few close friends, but otherwise in the closet. Compared to her political ambitions, Charlotte considers her love life almost irrelevant, and therefore has a strict policy of limiting herself to anonymous one-night stands arranged on dating apps. Even that is about to become impossible given her upcoming campaign, but she indulges in one last glance at SapphicSpark before she deletes her account. Sutton is as far as possible from the sort of person who does one-night stands, which is a shame as far as Charlotte is concerned. It would have been a fun last night out. Despite that, both of them find the other unexpectedly enjoyable to chat with. (There are a lot of text message bubbles in this book.) This is when Sutton has her brilliant idea: Charlotte is charming, experienced, and also kind and understanding of Sutton's anxiety, at least in app messages. Maybe Charlotte can be her mentor? Tell her how to approach women, give her some guidance, point her in the right directions. Given the genre, you can guess how this (eventually) turns out. I'm going to say a lot of good things about this book, so let me get the complaints over with first. As you might guess from that introduction, Charlotte's political career and the danger of being outed are central to this story. This is a bit unfortunate because you should not, under any circumstances, attempt to think deeply about the politics in this book. In 550 pages, Charlotte does not mention or expound a single meaningful political position. You come away from this book as ignorant about what Charlotte wants to accomplish as a politician as you entered. Apparently she wants to be president because her grandmother was president and she thinks she'd be good at it. The closest the story comes to a position is something unbelievably vague about homeless services and Charlotte's internal assertion that she wants to help people and make real change. There are even transcripts of media interviews, later in the book, and they somehow manage to be more vacuous than US political talk shows, which is saying something. I also can't remember a single mention of fundraising anywhere in this book, which in US politics is absurd (although I will be generous and say this is due to Cass's alternate history). I assume this was a deliberate choice and Cass didn't want politics to distract from the romance, but as someone with a lot of opinions about concrete political issues, the resulting vague soft-liberal squishiness was actively off-putting. In an actual politician, this would be an entire clothesline of red flags. Thankfully, it's ignorable for the same reason; this is so obviously not the focus of the book that one can mostly perform the same sort of mental trick that one does when ignoring the backdrop in a cheap theater. My second complaint is that I don't know what Sutton does outside of the romance. Yes, she's an English grad student, and she does some grading and some vaguely-described work and is later referred to a prestigious internship, but this is as devoid of detail as Charlotte's political positions. It's not quite as jarring because Cass does eventually show Sutton helping concretely with her mother's work (about which I have some other issues that I won't get into), but it deprives Sutton of an opportunity to be visibly expert in something. The romance setup casts Charlotte as the experienced one to Sutton's naivete, and I think it would have been a better balance to give Sutton something concrete and tangible that she was clearly better at than Charlotte. Those complaints aside, I quite enjoyed this. It was a recommendation from the same BookTuber who recommended Delilah Green Doesn't Care, so her recommendations are quickly accumulating more weight. The chemistry between Sutton and Charlotte is quite believable; the dialogue sparkles, the descriptions of the subtle cues they pick up from each other are excellent, and it's just fun to read about how they navigate a whole lot of small (and sometimes large) misunderstandings and mismatches in personality and world view. Normally, misunderstandings are my least favorite part of a romance novel, but Sutton and Charlotte come from such different perspectives that their misunderstandings feel more justified than is typical. The characters are also fairly mature about working through them: Main characters who track the other character down and insist on talking when something happens they don't understand! Can you imagine! Only with the third-act breakup is the reader dragged through multiple chapters of both characters being miserable, and while I also usually hate third-act breakups, this one is so obviously coming and so clearly advertised from the initial setup that I couldn't really be mad. I did wish the payoff make-up scene at the end of the book had a bit more oomph, though; I thought Sutton's side of it didn't have quite the emotional catharsis that it could have had. I particularly enjoyed the reasons why the two characters fall in love, and how different they are. Charlotte is delighted by Sutton because she's awkward and shy but also straightforward and frequently surprisingly blunt, which fits perfectly with how much Charlotte is otherwise living in a world of polished politicians in constant control of their personas. Sutton's perspective is more physical, but the part I liked was the way that she treats Charlotte like a puzzle. Rather than trying to change how Charlotte expresses herself, she instead discovers that she's remarkably good at reading Charlotte if she trusts her instincts. There was something about Sutton's growing perceptiveness that I found quietly delightful. It's the sort of non-sexual intimacy that often gets lost among the big emotions in romance novels. The supporting cast was also great. Both characters have deep support networks of friends and family who are unambiguously on their side. Regan is pure chaos, and I would not be friends with her, but Cass shows her deep loyalty in a way that makes her dynamic with Sutton make sense. Both characters have thoughtful and loving families who support them but don't make decisions for them, which is a nice change of pace from the usually more mixed family situations of romance novel protagonists. There's a lot of emotional turbulence in the main relationship, and I think that only worked for me because of how rock-solid and kind the supporting cast is. This is, as you might guess from the title, a very slow burn, although the slow burn is for the emotional relationship rather than the physical one (for reasons that would be spoilers). As usual, I have no calibration for spiciness level, but I'd say that this was roughly on par with the later books in the Bright Falls series. If you know something about politics (or political history) and try to take that part of this book seriously, it will drive you to drink, but if you can put that aside and can deal with misunderstandings and emotional turmoil, this was both fun and satisfying. I liked both of the characters, I liked the timing of the alternating viewpoints, and I believed in the relationship and chemistry, as improbable and chaotic as some of the setup was. It's not the greatest thing I ever read, and I wish the ending was a smidgen stronger, but it was an enjoyable way to spend a few reading days. Recommended. Rating: 7 out of 10

27 October 2025

Dirk Eddelbuettel: #054: Faster r-ci Continuous Integration via r2u Container

Welcome to post 54 in the R4 series. The topic of continuous integration has been a recurrent theme here at the R4 series. Post #32 introducess r-ci, while post #41 brings r2u to r-ci, but does not show a matrix deployment. Post #45 describes the updated r-ci setup that is now the default and contains a macOS and Ubuntu matrix, where the latter relies on r2u to keep things fast, easy, reliable . Last but not least more recent post #52 shares a trick for ensuring coverage reports. Following #45, use of r-ci at for example GitHub Actions has seen steady use and very reliable performance. With the standard setup, a vanilla Ubuntu setup is changed into one supported by r2u. This requires downloading and installating a few Ubuntu packages, and has generally been fairly quick on the order of around fourty seconds. Now, the general variability of run-times for identical tasks in GitHub Actions is well documented by the results of the setup described in post #39 which still runs weekly. It runs the identical SQL query against a remote backend using two different package families. And lo and behold, the intra-method variability on unchanged code or setup and therefore due solely to system variability is about as large as the inter-method variability. In short, GitHub Actions performance varies randomly with significant variability. See the repo README.md for chart that updates weekly (and see #39 for background). Of late, this variability became more noticeable during standard GitHub Actions runs where it would regularly take more than two minutes of setup time before actual continuous integration work was done. Some caching seems to be in effect, so subsequent runs in the same repo seem faster and often came back to one minute or less. For lightweight and small packages, loosing two minutes to setup when the actual test time is a minute or less gets old fast. Looking around, we noticed that container use can be combined with matrix use. So we have now been deploying the following setup (not always over all the matrix elements though)
jobs:
  ci:
    strategy:
      matrix:
        include:
          -   name: container, os: ubuntu-latest, container: rocker/r2u4ci  
          -   name: macos,     os: macos-latest   
          -   name: ubuntu,    os: ubuntu-latest  

    runs-on: $  matrix.os  
    container: $  matrix.container  
GitHub Actions is smart enough to provide NULL for container in the two other cases, so container: $ matrix.container is ignored there. But when container is set as here for the ci-enhanced version of r2u (which adds a few binaries commonly needed such as git, curl, wget etc needed for CI) then the CI jobs runs inside the container. And thereby skips most of the setup time as the container is already prepared. This also required some small adjustments in the underlying shell script doing the work. To not disrupt standard deployment, we placed these into a release candidate / development version one can op into via an new variable dev_version
      - name: Setup
        uses: eddelbuettel/github-actions/r-ci@master
        with:
          dev_version: 'TRUE'
Everything else remains the same and works as before. But faster as much less time is spent on setup. You can see the actual full yaml file and actions in my repositories for rcpparmadillo and rcppmlpack-examples. Additional testing would be welcome, so feel free to deploy this in your actions now. Otherwise I will likely carry this over and make it the defaul in a few weeks time. It will still work as before but when the added container: line is used will run much faster thanks to rocker/r2u4ci being already set up for CI.

This post by Dirk Eddelbuettel originated on his Thinking inside the box blog. If you like this or other open-source work I do, you can now sponsor me at GitHub.

Paul Tagliamonte: It's NOT always DNS.

I ve written down a new rule (no name, sorry) that I ll be repeating to myself and those around me. If you can replace DNS with key value store mapping a name to an ip and it still makes sense, it was not, in fact, DNS. Feel free to repeat it along with me. Sure, the It s always DNS meme is funny the first few hundred times you see it but what s less funny is when critical thinking ends because a DNS query is involved. DNS failures are often the first observable problem because it s one of the first things that needs to be done. DNS is fairly complicated, implementation-dependent, and at times frustrating to debug but it is not the operational hazard it s made out to be. It s at best a shallow take, and at worst actively holding teams back from understanding their true operational risks. IP connectivity failures between a host and the rest of the network is not a reason to blame DNS. This would happen no matter how you distribute the updated name to IP mappings. Wiping out all the records during the course of operations due to an automation bug is not a reason to blame DNS. This, too, would happen no matter how you distribute the name to IP mappings. Something made the choice to delete all the mappings, and it did what you asked it to do There s plenty of annoying DNS specific sharp edges to blame when things do go wrong (like 8.8.8.8 and 1.1.1.1 disagreeing about resolving a domain because of DNSSEC, or since we re on the topic, a DNSSEC rollout bricking prod for hours) for us to be cracking jokes anytime a program makes a DNS request. We can do better.

Russ Allbery: Review: On Vicious Worlds

Review: On Vicious Worlds, by Bethany Jacobs
Series: Kindom Trilogy #2
Publisher: Orbit
Copyright: October 2024
ISBN: 0-316-46362-0
Format: Kindle
Pages: 444
On Vicious Worlds is a science fiction thriller with bits of cyberpunk and a direct sequel to These Burning Stars. This is one of those series where each book has massive spoilers for the previous book and builds on characters and situations from that book. I would not read it out of order. It is Bethany Jacobs's second novel. Whooboy, how to review this without spoilers. There are so many major twists in the first book with lingering consequences that it's nearly impossible. I said at the end of my review of These Burning Stars that I was impressed with the ending for reasons that I can't reveal. One thread of this book follows the aftermath: What do you do after the plan? If you have honed yourself for one purpose, can you repurpose yourself? The other thread of the book is a murder mystery. The protectors of the community are being picked off, one by one. The culprit might be a hacker so good that they are causing Jun, the expert hacker of the first book, serious problems. Meanwhile, the political fault lines of the community are cracking open under pressure, and the leaders are untested, exhausted, and navigating difficult emotional terrain. These two story threads alternate, and interspersed are yet more flashbacks. As with the first book, the flashbacks fill in the backstory of Chono and and Esek. This time, though, we get Six's viewpoint. The good news is that On Vicious Worlds tones down the sociopathy considerably without letting up on the political twists. This is the book where Chono comes into her own. She has much more freedom of action, despite being at the center of complicated and cut-throat politics, and I thoroughly enjoyed her principled solidity. She gets a chance to transcend her previous role as an abuse victim, and it's worth the wait. The bad news is that this is very much a middle book of a trilogy. While there are a lot of bloody battles, emotional drama, political betrayals, and plot twists, the series plot has not advanced much by the end of the book. I would not say the characters were left in the same position they started the character development is real and the perils have changed but neither would I say that any of the open questions from These Burning Stars have resolved. The last book I read used science-fiction world-building to tell a story about moral philosophy that was somewhat less drama-filled than one might have expected. That is so not the case here. On Vicious Worlds is, if anything, even more dramatic than the first book of the series. In Chono's thread, the slow burn attempt to understand Six's motives has been replaced with almost non-stop melodrama, full of betrayals, reversals, risky attempts, and emotional roller coasters. Jun's part of the story is a bit more sedate at first, but there too the interpersonal drama setting is headed towards 10. This is the novel equivalent of an action movie. Jun, and her part of the story, are fine. I like the new viewpoint character, I find their system of governance somewhat interesting (although highly optimized for small groups), and I think the climax worked. But I'm invested in this series for Chono and Six. Both of them, but particularly Six, are absurdly over the top, ten people's worth of drama stuffed into one character, unable to communicate in anything less than dramatic gestures and absurd plans, but I find them magnetically fascinating. I'm not sure if written characters can have charisma, but if so, they have it. I liked this entry in the series, but then I also liked the first book. It's trauma-filled and dramatic and involved a bit too much bloody maiming for my tastes, but this whole series is about revolutions and what happens when you decide to fight, and sometimes I'm in the mood for complicated and damaged action heroes who loathe oppression and want to kill some people. This is the sort of series book that will neither be the reason you read the series nor the reason why you stop reading. If you enjoyed These Burning Stars, this is more of the same, with arguably better character development but less plot catharsis. If you didn't like These Burning Stars, this probably won't change your mind, although if you hated it specifically because of Esek's sociopathy, I think you would find this book more congenial. But maybe not; Jacobs is still the same author, and most of the characters in this series are made of sharp edges. I'm still in; I have already pre-ordered the next book. Followed by This Brutal Moon, due out in December of 2025 and advertised as the conclusion. Rating: 7 out of 10

26 October 2025

Dirk Eddelbuettel: duckdb-mlpack 0.0.2: mlpack is now a duckdb community extension

A couple of days ago in a short post, I announced duckdb-mlpack as ML quacks : combining the powerful C++ machine learning library mlpack with the amazing analytical database engine duckdb. See that post for more background. The duckdb-mlpack package is now a community extension joining an impressive list of existing extensions. This means duckdb builds and distributes duckdb-mlpack for all supported platforms allowing users to just install the resulting (signed) binary. (We currently only support Linux in both arm64 and amd64, adding macOS should be straightforward once we sort one build issue out. Windows and WASM should work too, with a little love and polish, as both duckdb and mlpack support them.) Given the binary build, a simple
INSTALL mlpack FROM community;
LOAD mlpack;
installs and loads the package. By the duckdb convention the code is stored per-user and per-version, so the first line needs to be executed only once per duckdb release used. The second line is then per session. We also extended the capabilities of duckdb-mlpack. While still a MVP stressing minimal viable product, the two supported methods adaBoost and (regularized) linear regression both serialize and store their model object permitting rapid prediction on new data as shown in the adaBoost example:
-- Perform adaBoost (using weak learner 'Perceptron' by default)
-- Read 'features' into 'X', 'labels' into 'Y', use optional parameters
-- from 'Z', and prepare model storage in 'M'
CREATE TABLE X AS SELECT * FROM read_csv("https://eddelbuettel.github.io/duckdb-mlpack/data/iris.csv");
CREATE TABLE Y AS SELECT * FROM read_csv("https://eddelbuettel.github.io/duckdb-mlpack/data/iris_labels.csv");
CREATE TABLE Z (name VARCHAR, value VARCHAR);
INSERT INTO Z VALUES ('iterations', '50'), ('tolerance', '1e-7');
CREATE TABLE M (json VARCHAR);

-- Train model for 'Y' on 'X' using parameters 'Z', store in 'M'
CREATE TEMP TABLE A AS SELECT * FROM mlpack_adaboost("X", "Y", "Z", "M");

-- Count by predicted group
SELECT COUNT(*) as n, predicted FROM A GROUP BY predicted;

-- Model 'M' can be used to predict
CREATE TABLE N (x1 DOUBLE, x2 DOUBLE, x3 DOUBLE, x4 DOUBLE);
-- inserting approximate column mean values
INSERT INTO N VALUES (5.843, 3.054, 3.759, 1.199);
-- inserting approximate column mean values, min values, max values
INSERT INTO N VALUES (5.843, 3.054, 3.759, 1.199), (4.3, 2.0, 1.0, 0.1), (7.9, 4.4, 6.9, 2.5);
-- and this predict one element each
SELECT * FROM mlpack_adaboost_pred("N", "M");
Ryan and I have some ideas for where to go from here, ideally towards autogenerating bindings for most (if not all) methods as is done for the mlpack language bindings. Anybody interested and willing to help should reach out to us.

This post by Dirk Eddelbuettel originated on his Thinking inside the box blog. If you like this or other open-source work I do, you can sponsor me at GitHub.

Junichi Uekawa: I have completed Clair Obscura Expedition 33 ACT2.

I have completed Clair Obscura Expedition 33 ACT2. Thank you to folks waiting for me to complete and not giving out clues on how it is going to end.

Guido G nther: Audio Roles, Volumes and Routes

What if you want to have your phone s alarm clock volume different from your music playback volume and have the later go to speakers while alarms should continue to go to the phone s speaker? While this could be handled manually via per application volume and sink setups, this doesn t scale well on phones that also have emergency alerts, incoming calls, voice assistants, etc. It also doesn t specify how to handle simultaneous playback - for instance, if an incoming call rings while music is playing.

Russ Allbery: Review: Ancestral Night

Review: Ancestral Night, by Elizabeth Bear
Series: White Space #1
Publisher: Saga Press
Copyright: 2019
ISBN: 1-5344-0300-0
Format: Kindle
Pages: 501
Ancestral Night is a far-future space opera novel and the first of a series. It shares a universe with Bear's earier Jacob's Ladder trilogy, and there is a passing reference to the events of Grail that would be a spoiler if you put the pieces together, but it's easy to miss. You do not need to read the earlier series to read this book (although it's a good series and you might enjoy it). Halmey Dz is a member of the vast interstellar federation called the Synarche, which has put an end to war and other large-scale anti-social behavior through a process called rightminding. Every person has a neural implant that can serve as supplemental memory, off-load some thought processes, and, crucially, regulate neurotransmitters and hormones to help people stay on an even keel. It works, mostly. One could argue Halmey is an exception. Raised in a clade that took rightminding to an extreme of suppression of individual personality into a sort of hive mind, she became involved with a terrorist during her legally mandated time outside of her all-consuming family before she could make an adult decision to stay with them (essentially a rumspringa). The result was a tragedy that Halmey doesn't like to think about, one that's left deep emotional scars. But Halmey herself would argue she's not an exception: She's put her history behind her, found partners that she trusts, and is a well-adjusted member of the Synarche.
Eventually, I realized that I was wasting my time, and if I wanted to hide from humanity in a bottle, I was better off making it a titanium one with a warp drive and a couple of carefully selected companions.
Halmey does salvage: finding ships lost in white space and retrieving them. One of her partners is Connla, a pilot originally from a somewhat atavistic world called Spartacus. The other is their salvage tug.
The boat didn't have a name. He wasn't deemed significant enough to need a name by the authorities and registries that govern such things. He had a registration number 657-2929-04, Human/Terra and he had a class, salvage tug, but he didn't have a name. Officially. We called him Singer. If Singer had an opinion on the issue, he'd never registered it but he never complained. Singer was the shipmind as well as the ship or at least, he inhabited the ship's virtual spaces the same way we inhabited the physical ones but my partner Connla and I didn't own him. You can't own a sentience in civilized space.
As Ancestral Night opens, the three of them are investigating a tip of a white space anomoly well off the beaten path. They thought it might be a lost ship that failed a transition. What they find instead is a dead Ativahika and a mysterious ship equipped with artificial gravity. The Ativahikas are a presumed sentient race of living ships that are on the most alien outskirts of the Synarche confederation. They don't communicate, at least so far as Halmey is aware. She also wasn't aware they died, but this one is thoroughly dead, next to an apparently abandoned ship of unknown origin with a piece of technology beyond the capabilities of the Synarche. The three salvagers get very little time to absorb this scene before they are attacked by pirates. I have always liked Bear's science fiction better than her fantasy, and this is no exception. This was great stuff. Halmey is a talkative, opinionated infodumper, which is a great first-person protagonist to have in a fictional universe this rich with delightful corners. There are some Big Dumb Object vibes (one of my favorite parts of salvage stories), solid character work, a mysterious past that has some satisfying heft once it's revealed, and a whole lot more moral philosophy than I was expecting from the setup. All of it is woven together with experienced skill, unsurprising given Bear's long and prolific career. And it's full of delightful world-building bits: Halmey's afthands (a surgical adaptation for zero gravity work) and grumpiness at the sheer amount of gravity she has to deal with over the course of this book, the Culture-style ship names, and a faster-than-light travel system that of course won't pass physics muster but provides a satisfying quantity of hooky bits for plot to attach to. The backbone of this book is an ancient artifact mystery crossed with a murder investigation. Who killed the Ativahika? Where did the gravity generator come from? Those are good questions with interesting answers. But the heart of the book is a philosophical conflict: What are the boundaries between identity and society? How much power should society have to reshape who we are? If you deny parts of yourself to fit in with society, is this necessarily a form of oppression? I wrote a couple of paragraphs of elaboration, and then deleted them; on further thought, I don't want to give any more details about what Bear is doing in this book. I will only say that I was not expecting this level of thoughtfulness about a notoriously complex and tricky philosophical topic in a full-throated adventure science fiction novel. I think some people may find the ending strange and disappointing. I loved it, and weeks after finishing this book I'm still thinking about it. Ancestral Night has some pacing problems. There is a long stretch in the middle of the book that felt repetitive and strained, where Bear holds the reader at a high level of alert and dread for long enough that I found it enervating. There are also a few political cheap shots where Bear picks the weakest form of an opposing argument instead of the strongest. (Some of the cheap shots are rather satisfying, though.) The dramatic arc of the book is... odd, in a way that I think was entirely intentional given how well it works with the thematic message, but which is also unsettling. You may not get the catharsis that you're expecting. But all of this serves a purpose, and I thought that purpose was interesting. Ancestral Night is one of those books that I liked more a week after I finished it than I did when I finished it.
Epiphanies are wonderful. I m really grateful that our brains do so much processing outside the line of sight of our consciousnesses. Can you imagine how downright boring thinking would be if you had to go through all that stuff line by line?
Also, for once, I think Bear hit on exactly the right level of description rather than leaving me trying to piece together clues and hope I understood the plot. It helps that Halmey loves to explain things, so there are a lot of miniature infodumps, but I found them interesting and a satisfying throwback to an earlier style of science fiction that focused more on world-building than on interpersonal drama. There is drama, but most of it is internal, and I thought the balance was about right. This is solid, well-crafted work and a good addition to the genre. I am looking forward to the rest of the series. Followed by Machine, which shifts to a different protagonist. Rating: 8 out of 10

25 October 2025

Mike Gabriel: Debian Lomiri Tablets - We are hiring!

We at Fre i e Software GmbH now have a confirmed budget for working on Debian based tablets with the special goal to use them for educational purposes (i.e. in schools). Those Debian Edu tablets shall be powered by the Lomiri Operating Environment (that same operating environment that is powering Ubuntu Touch). That said, we are hiring developers (full time, part time) [*] [**]: Global tasks will be: The budget will cover work for the +/- next 1.5-2 yrs. Development achievements shall culminate in the release of Debian 14. If you are interested in joining our team, please get in touch with me via known communication channels. light+love,
Mike (aka sunweaver at debian.org) [fsgmbh] https://freiesoftware.gmbh
[*] We can employ applicants who are located in Germany, Austria or Poland (for other regions within the EU, please ask).
[**] Alternatively, if you are self-employed, we are happy to onboard you as a freelancer.

Sam Hartman: My First Successful AI Coding Experience

Yesterday, I had my first successful AI coding experience. I ve used AI coding tools before and come away disappointed. The results were underwhelming: low-quality code, inconsistent abstraction levels, and subtle bugs that take longer to fix than it would take to write the whole thing from scratch. Those problems haven t vanished. The code quality this time was still disappointing. As I asked the AI to refined its work, it would randomly drop important constraints or refactor things in unhelpful ways. And yet, this experience was different and genuinely valuable for two reasons. The first benefit was the obvious one: the AI helped me get over the blank-page problem. It produced a workable skeleton for the project imperfect, but enough to start building on. The second benefit was more surprising. I was working on a problem in odds-ratio preference optimization specifically, finding a way to combine similar examples in datasets for AI training. I wanted an ideal algorithm, one that extracted every ounce of value from the data. The AI misunderstood my description. Its first attempt was laughably simple it just concatenated two text strings. Thanks, but I can call strcat or the Python equivalent without help. However, the second attempt was different. It was still not what I had asked for but as I thought about it, I realized it was good enough. The AI had created a simpler algorithm that would probably solve my problem in practice. In trying too hard to make the algorithm perfect, I d overlooked that the simpler approach might be the right one. The AI, by misunderstanding, helped me see that. This experience reminded me of something that happened years ago when I was mentoring a new developer. They came to me asking how to solve a difficult problem. Rather than telling them it was impossible, I explained what would be required: a complex authorization framework, intricate system interactions, and a series of political and organizational hurdles that would make deployment nearly impossible. A few months later, they returned and said they d found a solution. I was astonished until I looked more closely. What they d built wasn t the full, organization-wide system I had envisioned. Instead, they d reframed the problem. By narrowing the scope reducing the need for global trust and deep integration they d built a local solution that worked well enough within their project. They succeeded precisely because they didn t see all the constraints I did. Their inexperience freed them from assumptions that had trapped me. That s exactly what happened with the AI. It didn t know which boundaries not to cross. In its simplicity, it found a path forward that I had overlooked. My conclusion isn t that AI coding is suddenly great. It s that working with someone or something that thinks differently can open new paths forward. Whether it s an AI, a peer, or a less experienced engineer, that collaboration can bring fresh perspectives that challenge your assumptions and reveal simpler, more practical ways to solve problems.

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Jonathan Dowland: franken keyboard

Since it's spooky season, let me present to you the FrankenKeyboard!
The FrankenKeyboard
8bitdo retro keyboard For some reason I can't fathom, I was persuaded into buying an 8bitdo retro mechanical keyboard. It was very reasonably priced, and has a few nice fun features: built-in bluetooth and 2.4GHz wireless (with the supplied dongle); colour scheme inspired by the Nintendo Famicom; fun to use knobs for volume control; some basic macro support; and funky oversized mashable macro keys (which work really well as "Copy" and "Paste") The 8bitdo keyboards come with switch-types I had not previously experienced: Kailh Box White v2. I'm used to Cherry MX Reds, but I loved the feel of the Box White v2s. The 8bitdo keyboards all have hot-swappable key switches. It's relatively compact (comes without a numpad), but still larger than my TEX Shura, which (at home) is my daily driver. I also miss the trackpoint mouse on the Shura. Finally, the 8bitdo model I bought has American ANSI key layout, which I can tolerate but is not as nice as ISO. I later learned that they have a limited range of ISO-layout keyboards too, but not (yet) in the Famicom colour scheme I'd bought. DIY Shura My existing Shura's key switches are soldered on and can't be swapped out. But I really preferred the Kailh white switches. I decided to buy a second Shura, this time as a "DIY kit" which accepts hot-swappable switches. I then moved the Kailh Box White v2 switches over from the 8bitdo keyboard. keycaps Part of justifying buying the DIY kit was the possibility that I could sell on my older Shura with the Cherry MX Red switches. My existing Shura's key caps are for the ISO-GB layout and have their legends printed onto them. After three years the legends have faded in a few places. The DIY kit comes with a set of ABS "double-shot" key caps (where the key legends are plastic rather than printed). They look a lot nicer, but I don't look at my keys. I'm considering applying the new, pristine key caps to the old Shura board, to make it more attractive to buyers. One problem is I'm not sure the new set of caps includes the ISO-UK specific ones. It might be that potential buyers might prefer to have used caps with the correct legends rather than pristine ones which are mislabelled. franken keyboard Given I wasn't going to use the new key cap set, I borrowed most of the caps from the 8bitdo keyboard. I had to retain the G, H and B keys from my older Shura as they are specially molded to leave space for the trackpoint, and a couple of the modifier keys which weren't the right size. Hence the odd look! (It needs some tweaking. That left-ALT looks out of place. It may be that the 8bitdo caps are temporary. Left "cmd" is really Fn, and "Caps lock" is really "Super". The right-hand red dot is a second "Super".) Since taking the photo I've removed the "stabilisers" under the right-shift and backspace keys, in order to squeeze a couple more keys in their place. the new keycap set includes a regular-sized "BS" key, as the JIS keyboard layout has a regular-sized backspace. (Everyone should have a BS key in my opinion.) I plan to map my new keys to "Copy" and "Paste" actions following the advice in this article.

23 October 2025

Russ Allbery: Review: Politics on the Edge

Review: Politics on the Edge, by Rory Stewart
Publisher: Penguin Books
Copyright: 2023, 2025
Printing: 2025
ISBN: 979-8-217-06167-9
Format: Kindle
Pages: 429
Rory Stewart is a former British diplomat, non-profit executive, member of Parliament, and cabinet minister. Politics on the Edge is a memoir of his time in the UK Parliament from 2019 to 2019 as a Tory (Conservative) representing the Penrith and The Border constituency in northern England. It ends with his failed run against Boris Johnson for leader of the Conservative Party and Prime Minister. This book provoked many thoughts, only some of which are about the book. You may want to get a beverage; this review will be long. Since this is a memoir told in chronological order, a timeline may be useful. After Stewart's time as a regional governor in occupied Iraq (see The Prince of the Marshes), he moved to Kabul to found and run an NGO to preserve traditional Afghani arts and buildings (the Turquoise Mountain Foundation, about which I know nothing except what Stewart wrote in this book). By his telling, he found that work deeply rewarding but thought the same politicians who turned Iraq into a mess were going to do the same to Afghanistan. He started looking for ways to influence the politics more directly, which led him first to Harvard and then to stand for Parliament. The bulk of this book covers Stewart's time as MP for Penrith and The Border. The choice of constituency struck me as symbolic of Stewart's entire career: He was not a resident and had no real connection to the district, which he chose for political reasons and because it was the nearest viable constituency to his actual home in Scotland. But once he decided to run, he moved to the district and seems sincerely earnest in his desire to understand it and become part of its community. After five years as a backbencher, he joined David Cameron's government in a minor role as Minister of State in the Department for Environment, Food, and Rural Affairs. He then bounced through several minor cabinet positions (more on this later) before being elevated to Secretary of State for International Development under Theresa May. When May's government collapsed during the fight over the Brexit agreement, he launched a quixotic challenge to Boris Johnson for leader of the Conservative Party. I have enjoyed Rory Stewart's writing ever since The Places in Between. This book is no exception. Whatever one's other feelings about Stewart's politics (about which I'll have a great deal more to say), he's a talented memoir writer with an understated and contemplative style and a deft ability to shift from concrete description to philosophical debate without bogging down a story. Politics on the Edge is compelling reading at the prose level. I spent several afternoons happily engrossed in this book and had great difficulty putting it down. I find Stewart intriguing since, despite being a political conservative, he's neither a neoliberal nor any part of the new right. He is instead an apparently-sincere throwback to a conservatism based on epistemic humility, a veneration of rural life and long-standing traditions, and a deep commitment to the concept of public service. Some of his principles are baffling to me, and I think some of his political views are obvious nonsense, but there were several things that struck me throughout this book that I found admirable and depressingly rare in politics. First, Stewart seems to learn from his mistakes. This goes beyond admitting when he was wrong and appears to include a willingness to rethink entire philosophical positions based on new experience.
I had entered Iraq supporting the war on the grounds that we could at least produce a better society than Saddam Hussein's. It was one of the greatest mistakes in my life. We attempted to impose programmes made up by Washington think tanks, and reheated in air-conditioned palaces in Baghdad a new taxation system modelled on Hong Kong; a system of ministers borrowed from Singapore; and free ports, modelled on Dubai. But we did it ultimately at the point of a gun, and our resources, our abstract jargon and optimistic platitudes could not conceal how much Iraqis resented us, how much we were failing, and how humiliating and degrading our work had become. Our mission was a grotesque satire of every liberal aspiration for peace, growth and democracy.
This quote comes from the beginning of this book and is a sentiment Stewart already expressed in The Prince of the Marshes, but he appears to have taken this so seriously that it becomes a theme of his political career. He not only realized how wrong he was on Iraq, he abandoned the entire neoliberal nation-building project without abandoning his belief in the moral obligation of international aid. And he, I think correctly, identified a key source of the error: an ignorant, condescending superiority that dismissed the importance of deep expertise.
Neither they, nor indeed any of the 12,000 peacekeepers and policemen who had been posted to South Sudan from sixty nations, had spent a single night in a rural house, or could complete a sentence in Dinka, Nuer, Azande or Bande. And the international development strategy written jointly between the donor nations resembled a fading mission statement found in a new space colony, whose occupants had all been killed in an alien attack.
Second, Stewart sincerely likes ordinary people. This shone through The Places in Between and recurs here in his descriptions of his constituents. He has a profound appreciation for individual people who have spent their life learning some trade or skill, expresses thoughtful and observant appreciation for aspects of local culture, and appears to deeply appreciate time spent around people from wildly different social classes and cultures than his own. Every successful politician can at least fake gregariousness, and perhaps that's all Stewart is doing, but there is something specific and attentive about his descriptions of other people, including long before he decided to enter politics, that makes me think it goes deeper than political savvy. Third, Stewart has a visceral hatred of incompetence. I think this is the strongest through-line of his politics in this book: Jobs in government are serious, important work; they should be done competently and well; and if one is not capable of doing that, one should not be in government. Stewart himself strikes me as an insecure overachiever: fiercely ambitious, self-critical, a bit of a micromanager (I suspect he would be difficult to work for), but holding himself to high standards and appalled when others do not do the same. This book is scathing towards multiple politicians, particularly Boris Johnson whom Stewart clearly despises, but no one comes off worse than Liz Truss.
David Cameron, I was beginning to realise, had put in charge of environment, food and rural affairs a Secretary of State who openly rejected the idea of rural affairs and who had little interest in landscape, farmers or the environment. I was beginning to wonder whether he could have given her any role she was less suited to apart perhaps from making her Foreign Secretary. Still, I could also sense why Cameron was mesmerised by her. Her genius lay in exaggerated simplicity. Governing might be about critical thinking; but the new style of politics, of which she was a leading exponent, was not. If critical thinking required humility, this politics demanded absolute confidence: in place of reality, it offered untethered hope; instead of accuracy, vagueness. While critical thinking required scepticism, open-mindedness and an instinct for complexity, the new politics demanded loyalty, partisanship and slogans: not truth and reason but power and manipulation. If Liz Truss worried about the consequences of any of this for the way that government would work, she didn't reveal it.
And finally, Stewart has a deeply-held belief in state capacity and capability. He and I may disagree on the appropriate size and role of the government in society, but no one would be more disgusted by an intentional project to cripple government in order to shrink it than Stewart. One of his most-repeated criticisms of the UK political system in this book is the way the cabinet is formed. All ministers and secretaries come from members of Parliament and therefore branches of government are led by people with no relevant expertise. This is made worse by constant cabinet reshuffles that invalidate whatever small amounts of knowledge a minister was able to gain in nine months or a year in post. The center portion of this book records Stewart's time being shuffled from rural affairs to international development to Africa to prisons, with each move representing a complete reset of the political office and no transfer of knowledge whatsoever.
A month earlier, they had been anticipating every nuance of Minister Rogerson's diary, supporting him on shifts twenty-four hours a day, seven days a week. But it was already clear that there would be no pretence of a handover no explanation of my predecessor's strategy, and uncompleted initiatives. The arrival of a new minister was Groundhog Day. Dan Rogerson was not a ghost haunting my office, he was an absence, whose former existence was suggested only by the black plastic comb.
After each reshuffle, Stewart writes of trying to absorb briefings, do research, and learn enough about his new responsibilities to have the hope of making good decisions, while growing increasingly frustrated with the system and the lack of interest by most of his colleagues in doing the same. He wants government programs to be successful and believes success requires expertise and careful management by the politicians, not only by the civil servants, a position that to me both feels obviously correct and entirely at odds with politics as currently practiced. I found this a fascinating book to read during the accelerating collapse of neoliberalism in the US and, to judge by current polling results, the UK. I have a theory that the political press are so devoted to a simplistic left-right political axis based on seating arrangements during the French Revolution that they are missing a significant minority whose primary political motivation is contempt for arrogant incompetence. They could be convinced to vote for Sanders or Trump, for Polanski or Farage, but will never vote for Biden, Starmer, Romney, or Sunak. Such voters are incomprehensible to those who closely follow and debate policies because their hostile reaction to the center is not about policies. It's about lack of trust and a nebulous desire for justice. They've been promised technocratic competence and the invisible hand of market forces for most of their lives, and all of it looks like lies. Everyday living is more precarious, more frustrating, more abusive and dehumanizing, and more anxious, despite (or because of) this wholehearted embrace of economic "freedom." They're sick of every complaint about the increasing difficulty of life being met with accusations about their ability and work ethic, and of being forced to endure another round of austerity by people who then catch a helicopter ride to a party on some billionaire's yacht. Some of this is inherent in the deep structural weaknesses in neoliberal ideology, but this is worse than an ideological failure. The degree to which neoliberalism started as a project of sincere political thinkers is arguable, but that is clearly not true today. The elite class in politics and business is now thoroughly captured by people whose primary skill is the marginal manipulation of complex systems for their own power and benefit. They are less libertarian ideologues than narcissistic mediocrities. We are governed by management consultants. They are firmly convinced their organizational expertise is universal, and consider the specific business of the company, or government department, irrelevant. Given that context, I found Stewart's instinctive revulsion towards David Cameron quite revealing. Stewart, later in the book, tries to give Cameron some credit by citing several policy accomplishments and comparing him favorably to Boris Johnson (which, true, is a bar Cameron probably flops over). But I think Stewart's baffled astonishment at Cameron's vapidity says a great deal about how we have ended up where we are. This last quote is long, but I think it provides a good feel for Stewart's argument in this book.
But Cameron, who was rumoured to be sceptical about nation-building projects, only nodded, and then looking confidently up and down the table said, "Well, at least we all agree on one extremely straightforward and simple point, which is that our troops are doing very difficult and important work and we should all support them." It was an odd statement to make to civilians running humanitarian operations on the ground. I felt I should speak. "No, with respect, we do not agree with that. Insofar as we have focused on the troops, we have just been explaining that what the troops are doing is often futile, and in many cases making things worse." Two small red dots appeared on his cheeks. Then his face formed back into a smile. He thanked us, told us he was out of time, shook all our hands, and left the room. Later, I saw him repeat the same line in interviews: "the purpose of this visit is straightforward... it is to show support for what our troops are doing in Afghanistan". The line had been written, in London, I assumed, and tested on focus groups. But he wanted to convince himself it was also a position of principle. "David has decided," one of his aides explained, when I met him later, "that one cannot criticise a war when there are troops on the ground." "Why?" "Well... we have had that debate. But he feels it is a principle of British government." "But Churchill criticised the conduct of the Boer War; Pitt the war with America. Why can't he criticise wars?" "British soldiers are losing their lives in this war, and we can't suggest they have died in vain." "But more will die, if no one speaks up..." "It is a principle thing. And he has made his decision. For him and the party." "Does this apply to Iraq too?" "Yes. Again he understands what you are saying, but he voted to support the Iraq War, and troops are on the ground." "But surely he can say he's changed his mind?" The aide didn't answer, but instead concentrated on his food. "It is so difficult," he resumed, "to get any coverage of our trip." He paused again. "If David writes a column about Afghanistan, we will struggle to get it published." "But what would he say in an article anyway?" I asked. "We can talk about that later. But how do you get your articles on Afghanistan published?" I remembered how the US politicians and officials had shown their mastery of strategy and detail. I remembered the earnestness of Gordon Brown when I had briefed him on Iraq. Cameron seemed somehow less serious. I wrote as much in a column in the New York Times, saying that I was afraid the party of Churchill was becoming the party of Bertie Wooster.
I don't know Stewart's reputation in Britain, or in the constituency that he represented. I know he's been accused of being a self-aggrandizing publicity hound, and to some extent this is probably true. It's hard to find an ambitious politician who does not have that instinct. But whatever Stewart's flaws, he can, at least, defend his politics with more substance than a corporate motto. One gets the impression that he would respond favorably to demonstrated competence linked to a careful argument, even if he disagreed. Perhaps this is an illusion created by his writing, but even if so, it's a step in the right direction. When people become angry enough at a failing status quo, any option that promises radical change and punishment for the current incompetents will sound appealing. The default collapse is towards demagogues who are skilled at expressing anger and disgust and are willing to promise simple cures because they are indifferent to honesty. Much of the political establishment in the US, and possibly (to the small degree that I can analyze it from an occasional news article) in the UK, can identify the peril of the demagogue, but they have no solution other than a return to "politics as usual," represented by the amoral mediocrity of a McKinsey consultant. The rare politicians who seem to believe in something, who will argue for personal expertise and humility, who are disgusted by incompetence and have no patience for facile platitudes, are a breath of fresh air. There are a lot of policies on which Stewart and I would disagree, and perhaps some of his apparent humility is an affectation from the rhetorical world of the 1800s that he clearly wishes he were inhabiting, but he gives the strong impression of someone who would shoulder a responsibility and attempt to execute it with competence and attention to detail. He views government as a job, where coworkers should cooperate to achieve defined goals, rather than a reality TV show. The arc of this book, like the arc of current politics, is the victory of the reality TV show over the workplace, and the story of Stewart's run against Boris Johnson is hard reading because of it, but there's a portrayal here of a different attitude towards politics that I found deeply rewarding. If you liked Stewart's previous work, or if you want an inside look at parliamentary politics, highly recommended. I will be thinking about this book for a long time. Rating: 9 out of 10

21 October 2025

Gunnar Wolf: LLM Hallucinations in Practical Code Generation Phenomena, Mechanism, and Mitigation

This post is a review for Computing Reviews for LLM Hallucinations in Practical Code Generation Phenomena, Mechanism, and Mitigation , a article published in Proceedings of the ACM on Software Engineering, Volume 2, Issue ISSTA
How good can large language models (LLMs) be at generating code? This may not seem like a very novel question, as several benchmarks (for example, HumanEval and MBPP, published in 2021) existed before LLMs burst into public view and started the current artificial intelligence (AI) inflation. However, as the paper s authors point out, code generation is very seldom done as an isolated function, but instead must be deployed in a coherent fashion together with the rest of the project or repository it is meant to be integrated into. Today, several benchmarks (for example, CoderEval or EvoCodeBench) measure the functional correctness of LLM-generated code via test case pass rates. This paper brings a new proposal to the table: comparing LLM-generated repository-level evaluated code by examining the hallucinations generated. The authors begin by running the Python code generation tasks proposed in the CoderEval benchmark against six code-generating LLMs. Next, they analyze the results and build a taxonomy to describe code-based LLM hallucinations, with three types of conflicts (task requirement, factual knowledge, and project context) as first-level categories and eight subcategories within them. The authors then compare the results of each of the LLMs per the main hallucination category. Finally, they try to find the root cause for the hallucinations. The paper is structured very clearly, not only presenting the three research questions (RQ) but also referring to them as needed to explain why and how each partial result is interpreted. RQ1 (establishing a hallucination taxonomy) is the most thoroughly explored. While RQ2 (LLM comparison) is clear, it just presents straightforward results without much analysis. RQ3 (root cause discussion) is undoubtedly interesting, but I feel it to be much more speculative and not directly related to the analysis performed. After tackling their research questions, Zhang et al. propose a possible mitigation to counter the effect of hallucinations: enhance the LLM with retrieval-augmented generation (RAG) so it better understands task requirements, factual knowledge, and project context. The presented results show that all of the models are clearly (though modestly) improved by the proposed RAG-based mitigation. The paper is clearly written and easy to read. It should provide its target audience with interesting insights and discussions. I would have liked more details on their RAG implementation, but I suppose that s for a follow-up work.

Emmanuel Kasper: How configuration is passed from the BinderHub helm chart to a running BinderHub

Context: At $WORK I am doing a lot of datascience work around Jupyter Notebooks and their ecosystem. Right now I am setting BinderHub, which is a service to start a Jupyter Notebook from a git repo in your browser. For setting up BinderHub I am using the BinderHub helm chart, and I was wondering how configuration changes are propagated from the BinderHub helm chart to the process running in a Kubernetes Pod. After going through this I can say I am not right now a great fan of Helm, as it looks to me like an unnecessary, overengineered abstraction layer on top of Kubernetes manifests. Or maybe it is just that I don t want to learn the golang templating synthax. I am looking forward to testing Kustomize as an alternative, but I havn t had the chance yet. Starting from the list of config parameters available: Although many parameters are mentioned in the installer document, you have to go to the developer doc at https://binderhub.readthedocs.io/en/latest/reference/ref-index.html to get a whole overview. In my case I want to set the hostname parameter for the Gitlab Repoprovider. This is the relevelant snippet in the developer doc:
hostname c.GitLabRepoProvider.hostname = Unicode('gitlab.com')
    The host of the GitLab instance
The string c.GitLabRepoProvider.hostname here means, that the value of the hostname parameter will be loaded at the path config.GitLabRepoProvider inside a configuration file. Using the yaml synthax this means the configuration file should contain a snippet like:
config:
  GitlabRepoProvider
    hostname: my-domain.com
Digging through Kubernetes constructs: Helm values files When installing BinderHub using the provided helm chart, we can either put the configuration snippet in the config.yaml or secret.yaml helm values files. In my case I have put the snippet in config.yaml, since the hostname is not a secret thing, I can verify with yq that it correctly set:
$ yq --raw-output '.config.GitLabRepoProvider.hostname' config.yaml
my-domain.com
How do we make sure this parameter is properly applied to our running binder processes ? As said previouly this parameter is passed as a value file to helm ( value or -f option) in the command:
$ helm upgrade \                                                                                  
    binderhub \                                                                                     
    jupyterhub/binderhub \                                                                          
    --install \                                                                                     
    --version=$(RELEASE) \                                                                          
    --create-namespace \                                                                            
    --namespace=binderhub \                                                                         
    --values secret.yaml \                                                                                
    --values config.yaml \                                                                                
    --debug 
According to the helm documentation in https://helm.sh/docs/helm/helm_install/ the values file are concatenated to form a single object, and priority will be given to the last (right-most) file specified. For example, if both myvalues.yaml and override.yaml contained a key called Test , the value set in override.yaml would take precedence:
$ helm install --values myvalues.yaml --values override.yaml  myredis ./redis
Digging through Kubernetes constructs: Secrets and Volumes When helm upgrade is run the helm values of type config are stashed in a Kubernetes secret binder-secret: https://github.com/jupyterhub/binderhub/blob/main/helm-chart/binderhub/templates/secret.yaml#L12
stringData:
   - /*
    Stash away relevant Helm template values for
    the BinderHub Python application to read from
    in binderhub_config.py.
  */ 
  values.yaml:  
     - pick .Values "config" "imageBuilderType" "cors" "dind" "pink" "extraConfig"   toYaml   nindent 4  
We can verify that our hostname is passed to our Secret:
$ kubectl get secret binder-secret -o yaml   yq --raw-output '.data."values.yaml"'    base64 --decode
...
  GitLabRepoProvider:
    hostname: my-domain.com
...
Finally a configuration file inside the Binder pod is populated from the Secret, using the Kubernetes Volume construct. Looking at the Pod, we do see a volume called config, created from the binder-secret Secret:
$ kubectl get pod -l component=binder -o yaml   grep --context 4 binder-secret
    volumes:
    - name: config
      secret:
        defaultMode: 420
        secretName: binder-secret
That volume is mounted inside the pod at /etc/binderhub/config:
      volumeMounts:
      - mountPath: /etc/binderhub/config/
        name: config
        readOnly: true
Runtime verification Looking inside our pod we see our hostname value available in a file underneath the mount point:
oc exec binder-74d9c7db95-qtp8r -- grep hostname /etc/binderhub/config/values.yaml
    hostname: my-domain.com

Russ Allbery: Review: Space Trucker Jess

Review: Space Trucker Jess, by Matthew Kressel
Publisher: Fairwood Press
Copyright: July 2025
ISBN: 1-958880-27-2
Format: Kindle
Pages: 472
Space Trucker Jess is a stand-alone far-future space fantasy novel. Jess is a sixteen-year-old mechanic working grey-market jobs on Chadeisson Station with a couple of younger kids. She's there because her charming and utterly unreliable father got caught running a crypto scam and is sitting in detention. This was only the latest in a long series of scams, con jobs, and misadventures she's been dragged through since her mother disappeared without a word. Jess is cynical, world-weary, and infuriated by her own sputtering loyalty to her good-for-nothing dad. What Jess wants most in the universe is to own a CCM 6454 Spark Megahauler, the absolute best cargo ship in the universe according to Jess. She should know; she's worked on nearly every type of ship in existence. With her own ship, she could make a living hauling cargo, repairing her own ship, and going anywhere she wants, free of her father and his endless schemes. (A romantic relationship with her friend Leurie would be a nice bonus.) Then her father is taken off the station on a ship leaving the galactic plane, no one will tell her why, and all the records of the ship appear to have been erased. Jess thinks her father is an asshole, but that doesn't mean she can sit idly by when he disappears. That's how she ends up getting in serious trouble with station security due to some risky in-person sleuthing, followed by an expensive flight off the station with a dodgy guy and a kid in a stolen spaceship. The setup for this book was so great. Kressel felt the need to make up a futuristic slang for Jess and her friends to speak, which rarely works as well as the author expects and does not work here, but apart from that I was hooked. Jess is sarcastic, blustery, and a bit of a con artist herself, but with the idealistic sincerity of someone who knows that her life is been kind of broken and understands the value of friends. She's profoundly cynical in the heartbreakingly defensive way of a sixteen-year-old with a rough life. I have a soft spot in my heart for working-class science fiction (there isn't nearly enough of it), and there are few things I enjoy more than reading about the kind of protagonist who has Opinions about starship models and a dislike of shoddy work. I think this is the only book I've bought solely on the basis of one of the Big Idea blog posts John Scalzi hosts. I really wish this book had stuck with the setup instead of morphing into a weird drug-enabled mystical space fantasy, to which Jess's family is bizarrely central. SPOILERS below because I can't figure out how to rant about what annoyed me without them. Search for the next occurrence of spoilers to skip past them. There are three places where this book lost me. The first was when Jess, after agreeing to help another kid find his father, ends up on a world obsessed with a religious cult involving using hallucinatory drugs to commune with alien gods. Jess immediately flags this as unbelievable bullshit and I was enjoying her well-founded cynicism until Kressel pulls the rug out from under both Jess and the reader by establishing that this new-age claptrap is essentially true. Kressel does try to put a bit of a science fiction gloss on it, but sadly I think that effort was unsuccessful. Sometimes absurdly powerful advanced aliens with near-telepathic powers are part of the fun of a good space opera, but I want the author to make an effort to connect the aliens to plausibility or, failing that, at least avoid sounding indistinguishable from psychic self-help grifters or religious fantasy about spiritual warfare. Stargate SG-1 and Babylon 5 failed on the first part but at least held the second line. Kressel gets depressingly close to Seth territory, although at least Jess is allowed to retain some cynicism about motives. The second, related problem is that Jess ends up being a sort of Chosen One, which I found intensely annoying. This may be a fault of reader expectations more than authorial skill, but one of the things I like to see in working-class science fiction is for the protagonist to not be absurdly central to the future of the galaxy, or to at least force themselves into that position through their own ethics and hard work. This book turns into a sort of quest story with epic fantasy stakes, which I thought was much less interesting than the story the start of the book promised and which made Jess a less interesting character. Finally, this is one of those books where Jess's family troubles and the plot she stumbles across turn into the same plot. Space Trucker Jess is far from alone in having that plot structure, and that's the problem. I'm not universally opposed to this story shape, but Jess felt like the wrong character for it. She starts the story with a lot of self-awareness about how messed up her family dynamics were, and I was rooting for her to find some space to construct her own identity separate from her family. To have her family turn out to be central not only to this story but to the entire galaxy felt like it undermined that human core of the story, although I admit it's a good analogy to the type of drama escalation that dysfunctional families throw at anyone attempting to separate from them. Spoilers end here. I rather enjoyed the first third of this book, despite being a bit annoyed at the constructed slang, and then started rolling my eyes and muttering things about the story going off the rails. Jess is a compelling enough character (and I'm stubborn enough) that I did finish the book, so I can say that I liked the very end. Kressel does finally arrive at the sort of story that I wanted to read all along. Unfortunately, I didn't enjoy the path he took to get there. I think much of my problem was that I wanted Jess to be a more defiant character earlier in the novel, and I wanted her family problems to influence her character growth but not be central to her story. Both of these may be matters of opinion and an artifact of coming into the book with the wrong assumptions. If you are interested in a flawed and backsliding effort to untangle one's identity from a dysfunctional family and don't mind some barely-SF space mysticism and chosen one vibes, it's possible this book will click with you. It's not one that I can recommend, though. I still want the book that I hoped I was getting from that Big Idea piece. Rating: 4 out of 10

20 October 2025

Matthew Garrett: Where are we on X Chat security?

AWS had an outage today and Signal was unavailable for some users for a while. This has confused some people, including Elon Musk, who are concerned that having a dependency on AWS means that Signal could somehow be compromised by anyone with sufficient influence over AWS (it can't). Which means we're back to the richest man in the world recommending his own "X Chat", saying The messages are fully encrypted with no advertising hooks or strange AWS dependencies such that I can t read your messages even if someone put a gun to my head.

Elon is either uninformed about his own product, lying, or both.

As I wrote back in June, X Chat genuinely end-to-end encrypted, but ownership of the keys is complicated. The encryption key is stored using the Juicebox protocol, sharded between multiple backends. Two of these are asserted to be HSM backed - a discussion of the commissioning ceremony was recently posted here. I have not watched the almost 7 hours of video to verify that this was performed correctly, and I also haven't been able to verify that the public keys included in the post were the keys generated during the ceremony, although that may be down to me just not finding the appropriate point in the video (sorry, Twitter's video hosting doesn't appear to have any skip feature and would frequently just sit spinning if I tried to seek to far and I should probably just download them and figure it out but I'm not doing that now). With enough effort it would probably also have been possible to fake the entire thing - I have no reason to believe that this has happened, but it's not externally verifiable.

But let's assume these published public keys are legitimately the ones used in the HSM Juicebox realms[1] and that everything was done correctly. Does that prevent Elon from obtaining your key and decrypting your messages? No.

On startup, the X Chat client makes an API call called GetPublicKeysResult, and the public keys of the realms are returned. Right now when I make that call I get the public keys listed above, so there's at least some indication that I'm going to be communicating with actual HSMs. But what if that API call returned different keys? Could Elon stick a proxy in front of the HSMs and grab a cleartext portion of the key shards? Yes, he absolutely could, and then he'd be able to decrypt your messages.

(I will accept that there is a plausible argument that Elon is telling the truth in that even if you held a gun to his head he's not smart enough to be able to do this himself, but that'd be true even if there were no security whatsoever, so it still says nothing about the security of his product)

The solution to this is remote attestation - a process where the device you're speaking to proves its identity to you. In theory the endpoint could attest that it's an HSM running this specific code, and we could look at the Juicebox repo and verify that it's that code and hasn't been tampered with, and then we'd know that our communication channel was secure. Elon hasn't done that, despite it being table stakes for this sort of thing (Signal uses remote attestation to verify the enclave code used for private contact discovery, for instance, which ensures that the client will refuse to hand over any data until it's verified the identity and state of the enclave). There's no excuse whatsoever to build a new end-to-end encrypted messenger which relies on a network service for security without providing a trustworthy mechanism to verify you're speaking to the real service.

We know how to do this properly. We have done for years. Launching without it is unforgivable.

[1] There are three Juicebox realms overall, one of which doesn't appear to use HSMs, but you need at least two in order to obtain the key so at least part of the key will always be held in HSMs

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