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NixOS 21.11 released

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GNU
Linux

Hey everyone, we're Timothy DeHerrera and Tom Bereknyei, the release managers for 21.11. As promised, the latest stable release is here: NixOS 21.11 “Porcupine”.

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NixOS 21.11 Available to Download

  • NixOS 21.11 Available to Download

    NixOS is an independently developed GNU/Linux distribution that aims to improve the state of the art in system configuration management. In NixOS, the entire operating system, including the kernel, applications, system packages and configuration files, are built by the Nix package manager.

    The project’s latest release is NixOS 21.11 which includes the following highlights: “The default Nix version remains at 2.3.16. Nix has not been updated to version 2.4 due to regressions in non-experimental behavior. To upgrade to 2.4, use the nixos-unstable branch or set the nix.package option to either of nixFlakes or nix_2_4 packages. The nixUnstable attribute is a pre-release of Nix 2.5. Read the release notes for more information on upcoming changes. Please help us improve Nix by providing any breakage reports. iptables now uses nf_tables backend. PHP now defaults to PHP 8.0, updated from 7.4. kops now defaults to 1.21.1, which uses containerd as the default runtime. python3 now defaults to Python 3.9, updated from Python 3.8. PostgreSQL now defaults to major version 13.” Further information is available through the project’s release annoucement and in the release notes.

NixOS 21.11 Released

  • NixOS 21.11 Released But Its Own Package Manager Is Left Behind Due To Regressions - Phoronix

    NixOS is an original Linux distribution built atop its own unique Nix package manager that is focused on being functional, reliable, and reproducible. The Nix package manager concept is great but somewhat ironic is the new NixOS 21.11 release not even shipping with the latest Nix package manager version due to known regressions.

    NixOS 21.11 released yesterday and rather than shipping with the latest-and-greatest Nix, it's being held back to the latest Nix 2.3 point release by default rather than Nix 2.4. Holding up the default version of Nix was done as "Nix has not been updated to version 2.4 due to regressions in non-experimental behavior."

NixOS 21.11 "Porcupine" Released with Many Improvements

NixOS 21.11 “Porcupine” is here, but default Nix version remains at 2.3 point release rather than Nix 2.4.

NixOS is a Linux distribution that is entirely different than what one can expect from a regular Linux distro. It’s a Linux distribution which takes a unique approach to package and configuration management, because it’s built around Nix tool. So let me first explain what the NIX tool is.

NIX is a package manager and it could be used on any Linux distribution on top of the distribution package manager. To put things simple, NixOS is an operating system, and Nix is a package manager.

Now, everything in NixOS down to the kernel, is built by the Nix package manager with a declarative functional build language. The whole system configuration: fstab, packages, users, services, firewall, etc., is configured from a global configuration file that defines the state of the system.

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NixOS 21.11 Now Available for Download

  • NixOS 21.11 Now Available for Download

    NixOS is a bit different than most Linux distributions, because of a unique approach to package and configuration management. NixOS uses the NIX package manager to build everything…even the kernel. And even the entire system configuration (from fstab, users, services, firewalls, and more) is taken care of from within a single, global configuration file. This one-two punch makes NixOS very complex. In fact, many consider it on the same level as Gentoo.

    In other words, NixOS is not for the faint of heart.

NixOS and the changing face of Linux operating systems

  • NixOS and the changing face of Linux operating systems

    A new version of Linux distro NixOS has been released, just one day after a contentious blogpost that asked "Will Nix overtake Docker?"

    For DevOps folk, this was tantamount to clickbait: Nix and Docker are different tools for different jobs, and anyway, it's possible to use Nix to build Docker images.

    The distro, which hit version 21.11 on the last day of November, was built around the purely functional Nix package manager.

Automated translation in Market Research Telecast

In version 21.11 with the name “Porcupine”, the developers of the Linux distribution NixOS, which is based on the NIX package manager, have updated numerous packages, but also made changes under the hood. The distribution is not necessarily suitable for beginners. It creates a certain complexity through the approach of securing every change and thus being able to go back to any status.

The central component, the NIX package management, remains at status 2.3.16, as newer versions have proven to be unstable. Other changes affect iptables, for example, which now works with nf_tables in the backend. The new version also has KDE Plasma on Wayland on board, Gnome has been upgraded to version 41, and PHP to 8.0. Other versions are now Python 3.9, PostgreSQL 13, systemd 249 and OpenSSH 8.8p1.

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today's leftovers

  • Supplino is a variable benchtop power supply that you can build yourself | Arduino Blog

    Working with electronics requires access to stable power in a variety of voltages. Some components require 3.3V and others require 5V. Still others need 9V or 12V — there are many possibilities. You could keep a variety of wall warts on hand, but a variable benchtop power supply is a more convenient option. Supplino is one choice and this guide from Giovanni Bernardo and Paolo Loberto will walk you through how to build one. Supplino can accept anything from 4 to 40 volts and can output anything from 1.25 to 36 volts, with a maximum of 5A. An XH-M401 module with an XL4016E1 DC-DC buck converter handles the voltage regulation. Technically, you could use that alone to power your components. But the addition of an Arduino Nano board (or Nano Every) makes the experience far friendlier. It monitors the power supply output and drives a 1.8″ 128×160 TFT LCD screen, which displays the present voltage, amperage, and wattage.

  • Relocating Fedora's RPM database [LWN.net]

    The deadlines for various kinds of Fedora 36 change proposals have mostly passed at this point, which led to something of a flurry of postings to the distribution's devel mailing list over the last month. One of those, for a seemingly fairly innocuous relocation of the RPM database from /var to /usr, came in right at the buzzer for system-wide changes on December 29. There were, of course, other things going on around that time, holidays, vacations, and so forth, so the discussion was relatively muted until recently. Proponents have a number of reasons why they would like to see the move, but there is resistance, as well, that is due, at least in part, to the longstanding "tradition" of the location for the database.

  • CPU Isolation – A practical example – by SUSE Labs (part 5)
  • How to install Mantis bug tracker on Debian 11?

    Hello friends. In this post, you will learn how to install Mantis Bug Tracker on Debian 11.

Server: MongoDB vs. DynamoDB, Mirantis, and More

  • MongoDB vs. DynamoDB: What you need to know

    NoSQL databases have become more popular because of the need for more flexible backend solutions. These databases run applications that require a more flexible data structure than traditional structured databases can provide. Robust feature-rich NoSQL database platforms famous for NoSQL databases include MongoDB and DynamoDB. This article guide will compare these two databases to help you choose the right one for your project.

  • Mirantis brings secure registries to Kubernetes distros | ZDNet

    Mirantis Secure Registry, formerly Docker Trusted Registry, provides an enterprise-grade container registry solution. You can use this as a foundation to build a secure software supply chain. It does this by providing you with access to a container image registry that has enhanced levels of security beyond that of public registries. This, in turn, gives you more control over this critical part of their software supply chain. The comprehensive, built-in security enables users to verify and trust the automated operations and integration with Continuous Integration/Continuous Delivery (CI/CD) pipelines to speed up application testing and delivery. You can use MSR alongside your other apps in any standard Kubernetes 1.20 and above distribution, via standard Helm techniques. While the new MSR is no longer integrated with Mirantis Kubernetes Engine (MKE) as it was earlier, it still runs as well as ever on MKE as it does with any other supported Kubernetes distribution.

  • How North Dakota Is More Like Windows than UNIX

    If your official name is YATES, you can't (and presumably needn't) file a petition to change it to Yates. "Petitioners have offered no authority or reasoned argument that there is any legal significance to the capitalization of their names."

  • The Success of ‘Open-hearted’ Partnerships in the Cloud | SUSE Communities

    The future is open — and it’s better together. At SUSE, we pride ourselves on our partnerships, and sometimes what we can achieve together surpasses even our greatest hopes. That’s what our award-winning, cloud-based, high-performance computing (HPC) partnership with UberCloud, Dassault Systèmes, and Google Cloud achieved, by enabling 3DT Holdings researchers to create an affordable, real-time heart surgery simulator for physicians to use when it matters most. This is an ongoing relationship with the Living Heart Project that we think is just the beginning of what this ground-breaking research can achieve — and the lives it can save.

Programming Leftovers

  • An outdated Python for openSUSE Leap [LWN.net]

    Enterprise distributions are famous for maintaining the same versions of software throughout their, normally five-year-plus, support windows. But many of the projects those distributions are based on have far shorter support periods; part of what the enterprise distributions sell is patching over those mismatches. But openSUSE Leap is not exactly an enterprise distribution, so some users are chafing under the restrictions that come from Leap being based on SUSE Enterprise Linux (SLE). In particular, shipping Python 3.6, which reached its end of life at the end of 2021, is seen as problematic for the upcoming Leap 15.4 release. [...] OpenSUSE and SLE have generally been aligned over the years. In 2020, Leap and SLE grew even closer together. The build system and repositories between the two were shared starting with Leap 15.2, which corresponded to the second "service pack" (SP) of SLE (i.e. SLE 15-SP2). In 2021, with Leap 15.3 and SLE 15-SP3, the two distributions effectively merged, such that all of the base packages were shared between the two. To a first approximation, Leap is an openSUSE-branded version of SLE, much like what CentOS used to be for Red Hat Enterprise Linux.

  • Make Your Python CLI Tools Pop With Rich | Hackaday

    It seems as though more and more of the simple command-line tools and small scripts that used to be bash or small c programs are slowly turning into python programs. Of course, we will just have to wait and see if this ultimately turns out to be a good idea. But in the meantime, next time you’re revamping or writing a new tool, why not spice it up with Rich?

  • An outdated Python for openSUSE Leap [LWN.net]

    Enterprise distributions are famous for maintaining the same versions of software throughout their, normally five-year-plus, support windows. But many of the projects those distributions are based on have far shorter support periods; part of what the enterprise distributions sell is patching over those mismatches. But openSUSE Leap is not exactly an enterprise distribution, so some users are chafing under the restrictions that come from Leap being based on SUSE Enterprise Linux (SLE). In particular, shipping Python 3.6, which reached its end of life at the end of 2021, is seen as problematic for the upcoming Leap 15.4 release. [...] OpenSUSE and SLE have generally been aligned over the years. In 2020, Leap and SLE grew even closer together. The build system and repositories between the two were shared starting with Leap 15.2, which corresponded to the second "service pack" (SP) of SLE (i.e. SLE 15-SP2). In 2021, with Leap 15.3 and SLE 15-SP3, the two distributions effectively merged, such that all of the base packages were shared between the two. To a first approximation, Leap is an openSUSE-branded version of SLE, much like what CentOS used to be for Red Hat Enterprise Linux.

  • Make Your Python CLI Tools Pop With Rich | Hackaday

    It seems as though more and more of the simple command-line tools and small scripts that used to be bash or small c programs are slowly turning into python programs. Of course, we will just have to wait and see if this ultimately turns out to be a good idea. But in the meantime, next time you’re revamping or writing a new tool, why not spice it up with Rich?