Lukas

Nerd, software engineer. Interests: linux, FOSS, podcasts, music, games, cooking, politics. ⚒🤘

Feel free to follow, I just want to keep track of the "audience". 🙂

Threema: Y86D9X4J

2025-06-18

“Good poetry and literature should offer and invite multiple interpretations. If it's really good, it adapts to any life situation and broadens the reader’s perspective”

“As for religion—erase it, and you give people back the ability to act freely and independently.”

metalroots.org/post/nature-a-s

Good interview with Alboin from Eïs

2025-06-02

Verkaufsverbot für benzinbetriebene Forst- und Gartenkleingeräte wann?

2025-05-25

Atmospheric Black Metal mit Kinski-Samples 🧑‍🍳😙🤌

2025-03-07

@Drops falls dich das Thema interessiert kann ich dir den Elektrotrucker wärmstens empfehlen, insbesondere sein YouTube-Kanal ist augenöffnend, was heutzutage schon elektrisch in der Logistik geht. Seine Videos machen Mut und inspirieren. youtube.com/@elektrotrucker

2025-02-18

@phako sieht danach aus, die Kommunikation übernimmt wohl die bridge:

fed.brid.gy/docs#dm-request

2025-02-18

@phako wenn ich das richtig verstanden habe müssen die Accounts, denen ich folgen möchte, dafür aber alle ihrerseits etwas aktivieren (aka dem bridge Account auf bsky folgen), oder?

2025-02-18

Alternativ wäre glaube ich so eine Bluesky -> RSS bridge eine Option. Vermutlich ein bisschen klobig, aber besser als eine weitere Stelle an der ich Dinge zu lesen habe.

Hat da zufällig jemand Erfahrungen mit, oder schaffe ich mir hier gerade das nächste Weekend project?

2025-02-18

Was mir ja tatsächlich ein wenig hier fehlt ist ein Weg, Bluesky Accounts zu folgen.
Ich möchte nicht groß interagieren, nur Posts von einzelnen Accounts dort lesen können.

Ich habe da eine ganze Reihe von Accounts (zumeist kleinere Bands), die jetzt von Meta zu Bluesky wechseln. Ich würde ihnen gern weiter folgen, und sie auch in ihrer Entscheidung, Meta den Rücken zu kehren, "supporten".

(Klar, idealerweise wären sie direkt ins Fediverse gegangen, aber das hilft jetzt hier nicht wirklich.)

2025-01-15
What a week, huh meme.

A comic strip where one person is sitting, looking exhausted, and says "What a week, huh?". A second person replies "Captain, it‘s Wednesday".
2024-12-24

Tyvm to the family member who turned on the radio 😤 #whamageddon

2024-12-24

Damn it, I‘m out. Just 13.5 hours left 😩

#whamageddon

Lukas boosted:
David Chisnall (*Now with 50% more sarcasm!*)david_chisnall@infosec.exchange
2024-12-23

I finally turned off GitHub Copilot yesterday. I’ve been using it for about a year on the ‘free for open-source maintainers’ tier. I was skeptical but didn’t want to dismiss it without a fair trial.

It has cost me more time than it has saved. It lets me type faster, which has been useful when writing tests where I’m testing a variety of permutations of an API to check error handling for all of the conditions.

I can recall three places where it has introduced bugs that took me more time to to debug than the total time saving:

The first was something that initially impressed me. I pasted the prose description of how to communicate with an Ethernet MAC into a comment and then wrote some method prototypes. It autocompleted the bodies. All very plausible looking. Only it managed to flip a bit in the MDIO read and write register commands. MDIO is basically a multiplexing system. You have two device registers exposed, one sets the command (read or write a specific internal register) and the other is the value. It got the read and write the wrong way around, so when I thought I was writing a value, I was actually reading. When I thought I was reading, I was actually seeing the value in the last register I thought I had written. It took two of us over a day to debug this. The fix was simple, but the bug was in the middle of correct-looking code. If I’d manually transcribed the command from the data sheet, I would not have got this wrong because I’d have triple checked it.

Another case it had inverted the condition in an if statement inside an error-handling path. The error handling was a rare case and was asymmetric. Hitting the if case when you wanted the else case was okay but the converse was not. Lots of debugging. I learned from this to read the generated code more carefully, but that increased cognitive load and eliminated most of the benefit. Typing code is not the bottleneck and if I have to think about what I want and then read carefully to check it really is what I want, I am slower.

Most recently, I was writing a simple binary search and insertion-deletion operations for a sorted array. I assumed that this was something that had hundreds of examples in the training data and so would be fine. It had all sorts of corner-case bugs. I eventually gave up fixing them and rewrote the code from scratch.

Last week I did some work on a remote machine where I hadn’t set up Copilot and I felt much more productive. Autocomplete was either correct or not present, so I was spending more time thinking about what to write. I don’t entirely trust this kind of subjective judgement, but it was a data point. Around the same time I wrote some code without clangd set up and that really hurt. It turns out I really rely on AST-aware completion to explore APIs. I had to look up more things in the documentation. Copilot was never good for this because it would just bullshit APIs, so something showing up in autocomplete didn’t mean it was real. This would be improved by using a feedback system to require autocomplete outputs to type check, but then they would take much longer to create (probably at least a 10x increase in LLM compute time) and wouldn’t complete fragments, so I don’t see a good path to being able to do this without tight coupling to the LSP server and possibly not even then.

Yesterday I was writing bits of the CHERIoT Programmers’ Guide and it kept autocompleting text in a different writing style, some of which was obviously plagiarised (when I’m describing precisely how to implement a specific, and not very common, lock type with a futex and the autocomplete is a paragraph of text with a lot of detail, I’m confident you don’t have more than one or two examples of that in the training set). It was distracting and annoying. I wrote much faster after turning it off.

So, after giving it a fair try, I have concluded that it is both a net decrease in productivity and probably an increase in legal liability.

Discussions I am not interested in having:

  • You are holding it wrong. Using Copilot with this magic config setting / prompt tweak makes it better. At its absolute best, it was a small productivity increase, if it needs more effort to use, that will be offset.
  • This other LLM is much better. I don’t care. The costs of the bullshitting far outweighed the benefits when it worked, to be better it would have to not bullshit, and that’s not something LLMs can do.
  • It’s great for boilerplate! No. APIs that require every user to write the same code are broken. Fix them, don’t fill the world with more code using them that will need fixing when the APIs change.
  • Don’t use LLMs for autocomplete, use them for dialogues about the code. Tried that. It’s worse than a rubber duck, which at least knows to stay silent when it doesn’t know what it’s talking about.

The one place Copilot was vaguely useful was hinting at missing abstractions (if it can autocomplete big chunks then my APIs required too much boilerplate and needed better abstractions). The place I thought it might be useful was spotting inconsistent API names and parameter orders but it was actually very bad at this (presumably because of the way it tokenises identifiers?). With a load of examples with consistent names, it would suggest things that didn't match the convention. After using three APIs that all passed the same parameters in the same order, it would suggest flipping the order for the fourth.

#GitHubCopilot #CHERIoT

Lukas boosted:
Mike [SEC=OFFICIAL]mike@chinwag.org
2024-12-19

"Free Copilot in your GitHub account" is the 2020s version of "Free U2 album on your iPod".

2024-12-12

Dass ich irgendwann mal einen tagelangen Ohrwurm von

for (int i=0; i<foo; i++) {
System.out.println("HELLO WORLD!");

haben werde, hätte ich auch nicht gedacht.

youtube.com/watch?v=yup8gIXxWD

2024-10-29
2024-10-28
2024-10-28
2024-08-17

Für Sie getestet: Feueralarm im Hotel funktioniert auch, wenn man mit Ohropax schläft. Sogar so gut, dass meine Ohren immer noch klingeln.

Was allerdings offensichtlich nicht funktioniert sind die Köpfe der Menschen, die 15-20 Minuten nach Beginn des Alarms im Pyjama, aber mit vollgestopften Koffern und Taschen aus dem Hotel rennen. 🤦‍♂️

2024-08-13

Ein ganzer Artikel dazu, dass Kreisverkehre für Radfahrende unsicher sind, und das einzige im Bezug auf Autos ist die Erklärung, dass die A-Säulen halt breiter geworden seien.
Ansonsten nur Belehrungen und "Tipps" für Radfahrende, wie man sich am besten verhalten muss/kann.

Ich bin ja einiges von der örtlichen Lokalzeitung gewohnt, das allerdings ist mal wieder ein echtes Highlight der Inkompetenz.

Wenn es nicht so bitter wäre, könnte ich nur müde den Kopf schütteln.

archive.ph/ApngA

2024-07-31

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