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Programming Leftovers

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Development
  • Introducing rpm-macros-virtualenv 0.0.1

    This is a small set of RPM macros, which can be used by the spec files to build and package any Python application along with a virtualenv. Thus, removing the need of installing all dependencies via dnf/rpm repository. One of the biggest usecase will be to help to install latest application code and all the latest dependencies into a virtualenv and also package the whole virtualenv into the RPM package.

    This will be useful for any third part vendor/ISV, who would want to package their Python application for Fedora/RHEL/CentOS along with the dependencies. But, remember not to use this for any package inside of Fedora land as this does not follow the Fedora packaging guidelines.

  • Program Synthesis is Possible in Rust

    Program synthesis is the act of automatically constructing a program that fulfills a given specification. Perhaps you are interested in sketching a program, leaving parts of it incomplete, and then having a tool fill in those missing bits for you? Or perhaps you are a compiler, and you have some instruction sequence, but you want to find an equivalent-but-better instruction sequence? Program synthesizers promise to help you out in these situations!

    I recently stumbled across Adrian Sampson’s Program Synthesis is Possible blog post. Adrian describes and implements minisynth, a toy program synthesizer that generates constants for holes in a template program when given a specification. What fun! As a way to learn more about program synthesis myself, I ported minisynth to Rust.

  • The devil makes work for idle processes

    TLDR: in Endless OS, we switched the IO scheduler from CFQ to BFQ, and set the IO priority of the threads doing Flatpak downloads, installs and upgrades to “idle”; this makes the interactive performance of the system while doing Flatpak operations indistinguishable from when the system is idle.

    At Endless, we’ve been vaguely aware for a while that trying to use your computer while installing or updating apps is a bit painful, particularly on spinning-disk systems, because of the sheer volume of IO performed by the installation/update process. This was never particularly high priority, since app installations are user-initiated, and until recently, so were app updates.

  • Rcpp now used by 1500 CRAN packages

    Right now Rcpp stands at 1500 reverse-dependencies on CRAN. The graph is on the left depicts the growth of Rcpp usage (as measured by Depends, Imports and LinkingTo, but excluding Suggests) over time. What an amazing few days this has been as we also just marked the tenth anniversary and the big one dot oh release.

  • Python in RHEL 8

    Ten years ago, the developers of the Python programming language decided to clean things up and release a backwards-incompatible version, Python 3. They initially underestimated the impact of the changes, and the popularity of the language. Still, in the last decade, the vast majority of community projects has migrated to the new version, and major projects are now dropping support for Python 2.

    In Red Hat Enterprise Linux 8, Python 3.6 is the default. But Python 2 remains available in RHEL 8.

  • How to stand out, and get hired, at Grace Hopper Celebration

    During the 2018 Grace Hopper Celebration of Women in Computing (GHC), attendees flooded the George Brown Convention Center in Houston Texas to network, learn and share information in celebration of women technologists. For students at GHC, the expo hall also doubled as a career fair. Here’s how to stand out when you’re trying to leave GHC with opportunities to chart your own path in technology.

    Recruiters, engineers, scientists and technologists were stationed at company booths to talk about their workplaces. They screened resumes, interviewed candidates and shared their experiences.

    This year I was able to attend GHC for the first time, not as a student seeking a position but as an employee of Red Hat. At Red Hat we do many things differently, interviewing at GHC is one of those things. Red Hat is seeking associates who possess both a strong technical aptitude as well as a passion for our products and services.

  • Vim in the Future

     

    I have learned Vim as a programming-centric tool, but I use it for other tasks, too. This post assumes a reader isn’t necessarily a programmer but is curious about how tech things get done.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.