Lenovo ThinkPad P1 Gen 3 Laptop Is Now Available with Fedora Linux

As you probably already know, Lenovo and Fedora Project announced last year a collaboration to support as many Lenovo ThinkPad laptops and workstations with the Fedora Linux operating system. The initial offering included the ThinkPad P1 Gen2, ThinkPad P53, and ThinkPad X1 Gen8. As of today, the ThinkPad P1 Gen 3 laptop is included as well in the Fedora partnership program, and you can buy the ultra-thin, stylish, and powerful mobile workstation with Fedora Linux 33 right now from Lenovo’s online store starting at $1,594.42 USD.

today's leftovers

• Derivation: Peppertown video-game by Congusbongus and StarNavigator

  Thanks to the authors because the game is fully open-source and released on Github under the MIT License [2]. It was made with FLOSS tools (GIMP, VS Code, Phaser, Audacity, git, Tiled) for the MiniJam22 contest [3] and congratz to Congusbongus and StarNavigator for reaching the 2nd place with Peppertown!

• What security does a default OpenBSD installation offer? (by solene@)

  In a recent blog post, OpenBSD developer Solène Rapenne (solene@) offers an over view of the security features offered by a default OpenBSD installation.

• Jonathan Dieter: WANPIPE and DAHDI COPR for EL8

  At Spearline, we have a number of servers around the world with Sangoma telephony cards, which use the out-of-tree wanpipe and dahdi kernel modules. As we’ve been migrating our servers from CentOS 6 to SpearlineOS, one of the problems we’ve hit has been the out-of-tree modules don’t compile against the EL8 kernels that we use as the base for SpearlineOS. [...] If there’s any interest in using the kmod RPMs without the other packages in the COPR, I could look at splitting them into a separate COPR. Please email me if you would like me to do this.

• Mousepad 0.5.3 Is Released

  The Xfce team has released another version of the extremely plain and simple Mousepad editor. The latest version has a keybinding for resetting the font size and some small fixes. It still lacks absolutely everything beyond the ability to edit text and load and save files. [...] Mousepad still lacks all the features other simple text-editors like KWrite have beyond the very basic ability to edit text. There is no syntax high-lighting, there is no spell-checker, you can't select text and make it uppercase or lowercase or much else for that matter. It does have a search-and-replace function, and you can load and save files, and you can even have multiple files open in tabs. It does have those things going for it even though it is severely lacking in all other areas.

Free Software and Internet/Standards

• My Firefox addons as of Firefox 86 (and the current development version)

  I was recently reminded that my most recent entry on what Firefox addons I use is now a bit over a year old. Firefox has had 14 releases since then and it feels the start of January 2020 was an entirely different age, but my Firefox addons have barely changed in the year and a bit since that entry. Since they have updated a very small amount, I'll repeat the whole list just so I have it in one spot for the next time around.

• Delegation of responsibility for spec finalisation

  Sean is a natural choice for me to delegate this task to. He has been involved in the development of the Gemini specification for longer than anybody other than myself - he was the first person to actually implement the protocol in software, transforming it from the largely academic thought experiment that I had created it as into an actual real world project. He is the developer of a Gemini server (GLV-1.12556) and the admin of a server running it (gemini://gemini.conman.org), which means the details of the specification are of direct and practical relevance to him. He has a long-standing presence in Gopherspace, where the Gemini project was born, and therefore understands and appreciates the value of simple-by-design systems with limited scope. Finally, he has an excellent track record of constructively engaging with the mailing list even at its busiest and most frantic, which certainly can no longer be said for me. For all these reasons I trust him to make good decisions on the basis of careful consideration.

• A Saturday waste of CPU cycles: building time_t values

  It was bad enough trying to split up all of those date strings into their constituent parts - year, month, day - all of that stuff. But, then when I tried to consistently turn them back into a time_t, I ran into a bunch of other problems. That lead to the post called time handling is garbage. That then lead into the followup post three months later which talked about making time_t values without using mktime and the TZ variable.

Programming Leftovers

• Revisiting Html in Java

  Some time ago I wrote a post about creating an embedded dsl for Html in Java. Sadly, it was based on an abuse of lambda name reflection that was later removed from Java. I thought I should do a followup because a lot of people still visit the old article. While it’s no longer possible to use lambda parameter names in this way, we can still get fairly close.

• Use Dash as /bin/sh

  I want startup scripts and everything that has a #!/bin/sh shebang to use the lightest possible shell by default, but I still want my trusty bash in interactive terminal sessions, and for complex scripts.

• How to Use Group by in Pandas Python – Linux Hint

  Pandas group by function is used for grouping DataFrames objects or columns based on particular conditions or rules. Using the groupby function, the dataset management is easier. However, all related records can be arranged into groups. Using the Pandas library, you can implement the Pandas group by function to group the data according to different kinds of variables. Most developers used three basic techniques for the group by function. First, splitting in which data divide into groups based on some particular conditions. Then, apply certain functions to these groups. In the end, combine the output in the form of data structure. In this article, we will walk through the basic uses of a group by function in panda’s python. All commands are executed on the Pycharm editor.

• gfldex: Undocumented escape hatch

  On my quest to a custom when-statement I did quite a bit of reading. The study of roast and Actions.nqp can lead to great gain in knowledge.

• Knowing when to look past your code

  At some point, though, your journies will take you to places where things aren’t so clear cut, and you’ll start to gain a sixth sense; a kind of visceral experience that things are not as they have been promised to be.

  A few weeks ago, that sixth sense whispered in my ear: “what if, instead of your cruddy bootloader written in a pre-1.0 systems language for a platform you don’t fully understand, it’s the 20 year-old project with 80,000 commits that’s wrong?” And it was right.

• Cambalache…

• C++ Friend Function – Linux Hint

  A function is a block of code that performs a certain task and provides the output. It is mainly used to eliminate repetitive code. In this tutorial, we will look into the friend function in C++ and explain its concept with working examples.

• mrcal: principled camera calibrations

  In my day job I work with images captured by cameras, using those images to infer something about the geometry of the scene being observed. Naturally, to get good results you need to have a good estimate of the behavior of the lens (the "intrinsics"), and of the relative geometry of the cameras (the "extrinsics"; if there's more than one camera). The usual way to do this is to perform a "calibration" procedure to compute the intrinsics and extrinsics, and then to use the resulting "camera model" to process the subsequent images. Wikipedia has an article. And from experience, the most common current toolkit to do this appears to be OpenCV. People have been doing this for a while, but for whatever reason the existing tools all suck. They make basic questions like "how much data should I gather for a calibration?" and "how good is this calibration I just computed?" and "how different are these two models?" unanswerable.