Rock Identification
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How NixOS and reproducible builds could have detected the xz backdoor for the benefit of all
Some more light reading: While it was already established that the open source supply chain was often the target of malicious actors, what is stunning is the amount of energy invested by Jia Tan to gain the trust of the maintainer of the xz project, acquire push access to the repository and then among other perfectly legitimate contributions insert … ⌘ Read more
tt reimplementation that I already followed with the old Python tt. Previously, I just had a few feeds for testing purposes in my new config. While transfering, I "dropped" heaps of feeds that appeared to be inactive.
Thanks, @movq@www.uninformativ.de!
My backing SQLite database with indices is 8.7 MiB in size right now.
The twtxt cache is 7.6 MiB, it uses Python’s pickle module. And next to it there is a 16.0 MiB second database with all the read statuses for the old tt. Wow, super inefficient, it shouldn’t contain anything else, it’s a giant, pickled {"$hash": {"read": True/False}, …}. What the heck, why is it so big?! O_o
The brokenness of the web can be examined by opening about:compat in Firefox.

Lots and lots of workarounds for specific websites.
@movq@www.uninformativ.de You could also just use a tiling window manager. :-) As a bonus, it doesn’t waste dead space, the window utilizes the entire screen. To also get rid of panels and stuff, put the window in fullscreen mode.
@kat@yarn.girlonthemoon.xyz I have just opened the GIMP bug tracker (hosted at gitlab.gnome.org) and, I kid you not, they have deployed Anubis in front of it:

Oof.
Thinking about adding a little “focus” feature to my window manager: It hides all but one window, no wallpaper, no bars.
It would turn this

into this

or this

into this:

🤔
tt reimplementation that I already followed with the old Python tt. Previously, I just had a few feeds for testing purposes in my new config. While transfering, I "dropped" heaps of feeds that appeared to be inactive.
@lyse@lyse.isobeef.org I’m glad to hear that! Yay for more clients. 😊
@lyse@lyse.isobeef.org Interesting, thanks for that list. 🤔
@david@collantes.us @prologic@twtxt.net Sorry! https://cascii.app/
@andros@twtxt.andros.dev, which one? Did you forget the link, or are you referring to a twtxt I can’t see?
Pinellas County Running - 5 miles: 5.02 miles, 00:09:06 average pace, 00:45:44 duration
real humid so breathing was difficult. calves were still tight from the long run. honestly it felt really hard but my HR stayed pretty low considering.
#running
@lyse@lyse.isobeef.org Bad boy! 😂 Remember, it is an extension
A collection of postgreSQL patterns that you can use in other databases
https://mccue.dev/pages/3-11-25-life-altering-postgresql-patterns
#postgresql #databases
- Inspección terminada: no hay ratitas 🐭, se puede sentar. -
#catsoftwtxt
Bypassing Detections with Command-Line Obfuscation https://www.wietzebeukema.nl/blog/bypassing-detections-with-command-line-obfuscation
Playing multimedia with Dillo
What if you want to use a web browser like Dillo, which lacks JavaScript support and can’t play audio or video inside the browser? Dillo doesn’t have the capability to play audio or video directly from the browser, however it can easily offload this task to other programs. This page collects some examples of how to do watch videos and listen to audio tracks or podcasts by using an external player program. In particular we will cover mpv with yt-dlp which supports YouTube … ⌘ Read more
@movq@www.uninformativ.de Yeah, most of the graphical applications are actually KDE programs:
- KMail – e-mail client
- Okular – PDF viewer
- Gwenview – image viewer
- Dolphin – file browser
- KWallet – password manager (I want to check out
passone day. The most annoying thing is that when I copy a password, it says that the password has been modified and asks me whether I want to save the changes. I never do, because the password is still the same. I don’t get it.)
- KPatience – card game
- Kdenlive – video editor
- Kleopatra – certificate manager
Qt:
- VLC – video player
- Psi – Jabber client (I happily used Kopete in the past, but that is not supported anymore or so. I don’t remember.)
- sqlitebrowser – SQLite browser
Gtk:
- Firefox – web browser
- Quod Libet – music player (I should look for a better alternative. Can’t remember why I had to move away from Amarok, was it dead? There was a fork Clementine or so, but I had to drop that for some unknown reason, too.)
- Audacity – audio editor
- GIMP – image editor
These are the things that are open right now or that I could think of. Most other stuff I actually do in the terminal.
In the past™, I used the Python KDE4 bindings. That was really nice. I could pass most stuff directly in the constructor and didn’t have to call gazillions of setters improving the experience significantly. If I ever wanted to do GUI programming again, I’d definitely go that route. There are also great Qt bindings for Python if one wanted to avoid the KDE stuff on top. The vast majority I do for myself, though, is either CLI or maybe TUI. A few web shit things, but no GUIs anymore. :-)
Although, most software I use is decentish in that regard.
Is that because you mostly use Qt programs? 🤔
I wish Qt had a C API. Programming in C++ is pain. 😢
The seL4 microkernel: an introduction
This whitepaper provides an introduction to and overview of seL4. We explain what seL4 is (and is not) and explore its defining features. We explain what makes seL4 uniquely qualified as the operating-system kernel of choice for security- and safety-critical systems, and generally embedded and cyber-physical systems. In particular, we explain seL4’s assurance story, its security- and safety-relevant features, and its benchmark-setting performance. We also d … ⌘ Read more
@movq@www.uninformativ.de Oh, right, a type would be good to have! :-D
@movq@www.uninformativ.de Where can I join your club? Although, most software I use is decentish in that regard.
I just noted today that JetBrains improv^Wcompletely fucked up their new commit dialog. There’s no diff anymore where I would also be able to select which changes to stage. I guess from now on I’m going to exclusively commit from only the shell. No bloody git integration anymore. >:-( This is so useless now, unbelievable.
Nouvel article à propos de ma page /quotes https://si3t.ch/log/2025-03-24-quotes.txt
@eapl.me@eapl.me Ah! It is still not working.
@eapl.me@eapl.me I think the benefits do not outweigh the disadvantages. Clients would have to read and merge the information from 2 txt and a new metadata would have to be added with the address of this file.
Also, it is very easy to filter or ignore it.
SawStart
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I don’t have the need for a physical Calc nor a watch, although I’m slightly more interested in a https://banglejs.com or an eink watch 🤔
Anyone interested in the PicoCalc? https://www.clockworkpi.com/product-page/picocalc #basic
@doesnm@doesnm.p.psf.lt 💯 👏👏👏👏👏👏
@lyse@lyse.isobeef.org (I think of pointers as “memory location + type”, but I have done so much C and Assembler by now that the whole thing feels almost trivial to me. And I would have trouble explaining these concepts, I guess. 😅 Maybe I’ll cover this topic with our new Azubis/trainees some day …)
@prologic@twtxt.net What is “ciwtuau”? I don’t understand, sorry haha
@prologic@twtxt.net So it seems!
yes @lyse@lyse.isobeef.org 😅
I am working on this: https://dm-echo.andros.dev/
More news coming soon.
#twtxt
@kat@yarn.girlonthemoon.xyz Pointers can be a bit tricky. I know it took me also quite some time to wrap my head around them. Let my try to explain. It’s a pretty simple, yet very powerful concept with many facets to it.
A pointer is an indirection. At a lower level, when you have some chunk of memory, you can have some actual values sitting in there, ready for direct use. A pointer, on the other hand, points to some other location where to look for the values one’s actually after. Following that pointer is also called dereferencing the pointer.
I can’t come up with a good real-world example, so this poor comparison has to do. It’s a bit like you have a book (the real value that is being pointed to) and an ISBN referencing that book (the pointer). So, instead of sending you all these many pages from that book, I could give you just a small tag containing the ISBN. With that small piece of information, you’re able to locate the book. Probably a copy of that book and that’s where this analogy falls apart.
In contrast to that flawed comparision, it’s actually the other way around. Many different pointers can point to the same value. But there are many books (values) and just one ISBN (pointer).
The pointer’s target might actually be another pointer. You typically then would follow both of them. There are no limits on how long your pointer chains can become.
One important property of pointers is that they can also point into nothingness, signalling a dead end. This is typically called a null pointer. Following such a null pointer calls for big trouble, it typically crashes your program. Hence, you must never follow any null pointer.
Pointers are important for example in linked lists, trees or graphs. Let’s look at a doubly linked list. One entry could be a triple consisting of (actual value, pointer to next entry, pointer to previous entry).
_______________________
/ ________\_______________
↓ ↓ | \
+---+---+---+ +---+---+-|-+ +---+---+-|-+
| 7 | n | x | | 23| n | p | | 42| x | p |
+---+-|-+---+ +---+-|-+---+ +---+---+---+
| ↑ | ↑
\_______/ \_______/
The “x” indicates a null pointer. So, the first element of the doubly linked list with value 7 does not have any reference to a previous element. The same is true for the next element pointer in the last element with value 42.
In the middle element with value 23, both pointers to the next (labeled “n”) and previous (labeled “p”) elements are pointing to the respective elements.
You can also see that the middle element is pointed to by two pointers. By the “next” pointer in the first element and the “previous” pointer in the last element.
That’s it for now. There are heaps ;-) more things to tell about pointers. But it might help you a tiny bit.
@andros@twtxt.andros.dev @prologic@twtxt.net Exactly. The screenshots of the last few days show it in action. But I do not consider it ready for the world yet. @doesnm@doesnm.p.psf.lt appears to have a high pain tolerance, though. :-)
@andros@twtxt.andros.dev You use your real name as login name, too?
@prologic@twtxt.net I see this with the scouts. Luckily, not at work. But at work, I’m surrounded by techies.
@movq@www.uninformativ.de Oh my goodness! I’m so glad that I don’t have to deal with that in my family. But yeah, I guess you’re onto something with your theory. This article is also quite horrific. O_o
@movq@www.uninformativ.de Wooaah, that is cool! \o/
@lyse@lyse.isobeef.org Maybe it’s a lyrebird
. 😏
@prologic@twtxt.net Yes, it was one of those. 95, 98, and Me were all built on top of DOS, as far as I know.