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Programming Leftovers

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Development
  • Joachim Breitner: Learn Haskell on CodeWorld writing Sokoban

    Two years ago, I held the CIS194 minicourse on Haskell at the University of Pennsylvania. In that installment of the course, I changed the first four weeks to teach the basics of Haskell using the online Haskell environment CodeWorld, and lead the students towards implementing the game Sokoban.

    As it is customary for CIS194, I put my lecture notes and exercises online, and this has been used as a learning resources by people from all over the world. But since I have left the University of Pennsylvania, I lost the ability to update the text, and as the CodeWorld API has evolved, some of the examples and exercises no longer work.

  • SiFive Begins Adding RISC-V "Bullet" Microarchitecture Code To LLVM

    On Friday night patches began to appear for "RISC-V Bullet" in the LLVM compiler code-base.

    The initial work is on the scheduler being added for the RISC-V Bullet. The initial scheduler is in place for the RISC-V Bullet microarchitecture and bullet-rv32 / bullet-rv64 naming.

  • Pho 1.0, Belated Release

    I was doing some disk housekeeping and noticed that my venerable image viewer, Pho, was at version 1.0pre1, and had been since 2017. It's had only very minimal changes since that time. I guess maybe it's been long enough that it's time to remove that -pre1 moniker, huh?

  • GammaRay 2.11.2

    We have released version 2.11.2 of our Qt application introspection tool GammaRay, bringing support for Qt 5.15 and improved Qt Quick item picking.

    GammaRay is a software introspection tool for Qt applications developed by KDAB. Leveraging the QObject introspection mechanism it allows you to observe and manipulate your application at runtime. This works both locally on your workstation and remotely on an embedded target.

  • A meta issue for modules: bug tracking

    I was reading a module on meta::cpan when I spied a small issue. I went up to the Issues link, clicked, and was sent to rt.cpan. I know that many module authors now have their modules on sites like GitHub, GitLab, or Bitbucket. Before I posted the issue on rt.cpan, I checked the author's profile for a linked account to one of the other sites. I found the module on GitHub and read the CONTRIBUTING.md to find the author does want issues reported there and not rt.cpan. I did not report my original issue, I reported the link issue instead as it seemed more important.

    Today is not the first time I noticed this issue with a module's bug tracking.

    Before continuing, I have not released a module to CPAN and am still learning all that goes into releasing one. Please be gentle if I am wrong or stating an obvious well known fact.

  • Gisle Aas's CPAN distributions are available for adoption

    Gisle Aas (GAAS on CPAN) is a well-known CPAN author, who made his first releases back in 1995. Over the years he has developed and maintained a number of keystone modules that most of us have relied on, whether we realised it or not. Gisle has informed the PAUSE admins that he will no longer be maintaining his CPAN distributions, and is open to responsible adoption. In this blog post we'll summarise what distributions are available, and our interpretation of responsible adoption.

    If you're interested, please read this post, and if you still would like to adopt a distribution, contact the PAUSE admins (modules at perl dot org) and not Gisle.

  • Firefox Nightly Flips On New JIT "Warp" Code For Greater JavaScript Performance

    Mozilla's SpiderMonkey JavaScript engine team have been working on a big update to their just-in-time compiler code. This big update called "Warp" is now enabled in the latest Firefox Nightly builds for offering big speed-ups.

    Warp aims to improve the Firefox JavaScript performance by reducing the amount of internal type information that is tracked along with other optimizations. Warp can lead to greater responsiveness and faster page load speed. Numbers cited by Warm developers are normally in the 5~15% range.

More in Tux Machines

Android Leftovers

Stereoscopic cam board taps Raspberry Pi CM4

StereoPi is going to Crowd Supply to pitch an open-spec “StereoPi v2” stereoscopic camera board that works with the Raspberry Pi CM4. The v2 adds a Type-C port and advances to GbE and 802.11ac. In Dec. 2019, Russia-based Virt2real found Crowd Supply success with a StereoPi stereoscopic camera board that works with the Raspberry Pi Compute Module 3 (CM3). Now operating under the StereoPi name, the company has posted a Crowd Supply page for a second-gen model that uses the new Raspberry Pi CM4. Read more

8 Tools to Easily Create a Custom Linux Distro

When there are so many Linux distros out there, you are probably wondering why someone would want to create their own distro instead of getting a readymade one. While in most cases a readymade distro is fine, if you want to have a distro that is 100 percent tailored to your needs (or your mum or dad’s needs), you may have to create your own custom Linux distro. With the right tools, creating your own Linux distro isn’t as hard as it seems, though it takes time for sure. There are many tools for the purpose – some of them are universal, and some of them are distro-specific. Here are eight of them. Read more

today's leftovers

  • 7 Halloween-themed Retro-Games for RetroPie - YouTube

    Halloween is my favorite holiday! And to celebrate, here are 7 great retro games that are perfect for the occasion. These are some great spooky-fun games to add to your RetroPie.

  • Friends of GNOME Update – October 2020

    We’re working with our friends at KDE on the Linux Application Summit (LAS). This event takes place November 12 – 14. It will be online this year. The event will cover all things to do with apps in a Linux environment. Registration is open! LAS is also looking for volunteers, so if you’d like to get involved, please fill out this form. Registration for GNOME.Asia is open! The GNOME.Asia Summit 2020 will be taking place online on November 24 – 26. While the conference is centered around the GNOME Project, there will be talks, workshops, and Birds of a Feather sessions for everyone interested in free and open source software. You can register online.

  • Collabora developers mentor successful GSoC Projects

    Autumn is just around the corner. For many participants in the GSoC 2020, a busy and instructive summer full of hacking on open source projects came to an end a few weeks ago. Commits have been contributed and final reports have been written. This year experienced Collabora Productivity developers were again mentors for various projects of the Google Summer of Code for the LibreOffice project. Here are some examples of projects our team helped to succeed!

  • OpenBehavior: A Rich Directory for Open-source Behavioral Neuroscience Projects

    OpenBehavior is an open-source repository for tools, software, projects and scripts that are dedicated for behavioral neuroscience research. The main goal is to promote and accelerate the collaboration of open-source neuroscience projects, neuroscience researchers and developers. Currently, OpenBehavior has 145 projects and active community of developers and research who are supporting this project. The project is founded and maintained by a group of researchers and professors. It started 2016 by Mark Lubach (PhD) and Alexxai Karvitz (PhD). The project is funded by NASA DC Space Grant Consortium to ML, Summer 2017. However, It's still looking for more support as it's 100% volunteer work.

  • Taskcluster's DB (Part 1) - Azure to Postgres [Ed: Mozilla flirtations with Microsoft again]

    This is a deep-dive into some of the implementation details of Taskcluster. Taskcluster is a platform for building continuous integration, continuous deployment, and software-release processes. It’s an open source project that began life at Mozilla, supporting the Firefox build, test, and release systems. The Taskcluster “services” are a collection of microservices that handle distinct tasks: the queue coordinates tasks; the worker-manager creates and manages workers to execute tasks; the auth service authenticates API requests; and so on.

  • Open Source Drive-Thru Contributors [Ed: Openwashing agenda by VM Brasseur or how to 'farm' a community for 'free labour']

    VM Brasseur explains open source “drive-thru contributions” and explores how the process can be improved. In the ongoing efforts to create a sustainable free and open source software ecosystem—one where projects receive the attention they need without burning out their maintainers in the process—a lot of attention has justifiably fallen on increasing the number of FOSS contributors. Much of the discussion around increasing contributors assumes that the primary goal is to get contributors who will stick around and become community members and maintainers. It's certainly true that many hands make light work, and the more maintainers a project has the less likely it is that any one of them will bear the brunt of the work and burn out. But, this isn't the only way to support project sustainability through contributions. Another approach is to optimize your project for drive-thru contributors.

  • Security updates for Thursday

    Security updates have been issued by Debian (linux-4.19), Fedora (tcpreplay, xen, and yubihsm-shell), SUSE (pacemaker), and Ubuntu (gosa and pam-python).

  • Set up CUPS Print Server in Ubuntu 20.04 – Linux Hint

    The job of a print server is to accept print requests from multiple machines, process those requests, and then send them to the specified printer for serving those requests. CUPS is a utility designed for Linux operating systems that can turn a regular computer system into a print server. This article provides a method for setting up the CUPS print server in Ubuntu 20.04.

  • Ubuntu Unity Groovy Gorilla

    This tutorial explains how to switch Ubuntu 20.10 user interface back to Unity rather than GNOME. This is for computer users who prefer Ubuntu with its innovative Unity appearance that found in version 10.04 LTS and 16.10. Now let's have fun!