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Fedora Aims for 99% Reproducible Builds in Fedora 43

2025-04-11

Fedora is striving for 99% reproducible builds in its upcoming Fedora 43 release. This means anyone, given the same source code, build environment, and instructions, can recreate bit-for-bit identical binaries. While Debian has made significant strides in reproducible builds, Fedora's approach focuses on the payload of RPM packages, leveraging infrastructure improvements and tools like add-determinism and rebuilderd. Although largely invisible to end-users, this effort is crucial for bolstering supply chain security against malicious attacks.

(lwn.net)

Development

Mexico's Open Source Journey: A David vs. Goliath Story of Government Transformation

2025-04-06

Former high-ranking Mexican government official Federico González Waite shared his decade-long experience pushing open-source software adoption within the Mexican government. To cut costs, achieve IT sovereignty, and break free from proprietary software vendors, he led multiple projects, including building the national e-passport system and deploying large-scale communications infrastructure. Despite facing threats from giants like Oracle and resistance within the government, they made significant progress, but also faced setbacks, such as projects failing due to lack of sustained funding and changes in government leadership. He stressed that successful open-source transformation hinges on strong internal support and leadership commitment, along with continuous investment in talent development.

(lwn.net)

Tech government digital transformation

Rust Adopts Ferrocene Language Specification

2025-03-30

Rust's lack of an official specification has hindered its adoption in safety-conscious organizations. The Rust project now announces its adoption of the Ferrocene Language Specification (FLS), developed by Ferrous Systems, as a core project component. This move aims to remove a significant barrier to using Rust in safety-critical systems.

(lwn.net)

Development Safety-Critical Systems

Ubuntu Considers Switching to Rust Utilities by Default

2025-03-21

Ubuntu is planning to replace many traditional GNU utilities with Rust implementations, such as those from the uutils project, in its upcoming 25.10 release. To test the suitability of these Rust tools, Canonical's VP of Engineering, Jon Seager, released oxidizr, a command-line utility to easily enable or disable them. This move aims to enhance Ubuntu's resilience and security, and attract more contributors. While community reaction is mixed, this shift could significantly impact Rust's adoption and the future of Linux distributions.

(lwn.net)

Development

The Forking Paths of Firefox: Privacy vs. the Free Software Ethos

2025-03-14

Mozilla's recent actions have angered many Firefox users, prompting them to seek alternatives. This article explores several Firefox forks, such as GNU IceCat, Floorp, LibreWolf, and Zen, each emphasizing different aspects of privacy protection and free software principles. IceCat prioritizes free software, enhancing privacy with extensions like LibreJS and JShelter; Floorp focuses on user experience, featuring dual sidebars and workspace functionalities; LibreWolf concentrates on privacy and security, removing tracking features from Firefox; and Zen boasts a modern interface and extensive customization options. While these forks offer users more choices, they all rely on Mozilla's underlying development, facing challenges in security updates and maintenance.

(lwn.net)

Development

uutils: Five Years Rewriting GNU Coreutils in Rust

2025-03-09

At FOSDEM 2025, Sylvestre Ledru announced major progress on uutils, his Rust-based replacement for GNU Coreutils. Nearly five years in the making, the project, begun during the COVID lockdown, has rewritten over 100 essential Unix/Linux utilities, boasts over 530 contributors and 18,000+ GitHub stars. Aiming for safer, more performant drop-in replacements, uutils passes nearly 500 of the GNU coreutils test suite and is used by projects like Debian-based Apertis, Spectacles smartglasses, and Microsoft Visual Studio Code. Ledru's next target: expanding the Rust rewrite to other key Debian/Ubuntu packages, addressing the challenges of C maintenance and offering a modern experience for new developers.

(lwn.net)

Development

The Genesis of Linux: From As and Bs to Mars

2025-03-02

This article is a fascinating firsthand account of Linux's creation by early contributor Lars Wirzenius. It begins in 1991 with Linus Torvalds, using a 386 PC with a meager 4MB of RAM, writing a simple multitasking program that displayed alternating streams of 'A's and 'B's on the screen – the genesis of the Linux kernel. With the help of Wirzenius, Linus refined the kernel and released it online. Through key events like the famous debate with Andrew Tanenbaum, the adoption of the GPL license, and the porting of the X11 system, Linux evolved from a hobby project into a global operating system powering billions of devices from Earth to Mars.

(lwn.net)

Tech

Julia 1.11 and Beyond: Static Compilation, juliaup, and WebAssembly Advancements

2025-02-20

Julia 1.11 brings significant improvements, addressing longstanding user concerns. The most impactful is the advancement in static compilation; the upcoming 1.12 release will produce smaller executables, facilitating distribution. Additionally, the new juliaup utility streamlines Julia installation and upgrades, while WebAssembly support continues to mature, enabling Julia programs to run in browsers. These enhancements make Julia more user-friendly and broaden its applications, making it a powerful contender for scientific computing and system utility development.

(lwn.net)

Development static compilation

Fuzzing Concurrency Bugs with a BPF Scheduler

2025-02-14

At FOSDEM, Jake Hillion from Meta and Johannes Bechberger, an OpenJDK developer, presented their concurrency fuzzing scheduler built using the BPF scheduling framework, `sched_ext`. This scheduler deliberately introduces randomness in scheduling, causing delays and altering thread execution order to surface elusive concurrency bugs. While currently having a significant performance overhead, limiting its use to development debugging, it offers an effective way to uncover real-world logic errors and shows promise for future production use after optimization.

(lwn.net)

Development fuzzing

Rust Drivers Hit a Snag in the Linux Kernel's DMA Subsystem

2025-02-04

The Linux kernel's efforts to integrate Rust for device driver development are encountering resistance within the DMA (Direct Memory Access) subsystem. Rust drivers require interaction with the kernel's DMA mapping layer, necessitating a set of abstractions. However, core maintainer Christoph Hellwig opposes adding Rust code to `kernel/dma`, citing increased maintenance complexity. While Rust developers proposed maintaining these abstractions separately, Hellwig remains unconvinced. This impasse highlights challenges in Rust's kernel integration, with its future hinging on the kernel community's decision and the adaptation of core maintainers to a multi-language environment.

(lwn.net)

Development

LWN.net Now Offers EPUB Editions

2025-02-02

LWN.net has announced that all feature content is now available in EPUB format for subscribers at the "professional hacker" level and above. Subscribers can download the weekly edition by clicking the "Download EPUB" link in the left column, and there's a separate EPUB RSS feed. Other feature content can be converted to EPUB by appending `/epub` to its URL. LWN.net will also create special EPUB books; coverage from Kangrejos 2024 and the 2024 Linux Storage, Filesystem, Memory Management, and BPF Summit is already available to all readers.

(lwn.net)

Tech

Going Mouseless: Building a Productive Keyboard-Only Desktop

2025-02-01

Tired of your mouse? This author shares their journey to a mouse-free desktop. By leveraging tools like the PaperWM scrollable tiling window manager, Firefox bookmark keywords, the Vimium browser extension, and the terminal-based email client Aerc, along with GNOME's Quake Terminal extension and Input Remapper, the author dramatically increased productivity and improved ergonomics. The article details how to use and configure these tools, and shares their experience hiding Emacs's menus and toolbars to further reduce mouse reliance.

(lwn.net)

Development mouseless desktop environment

Chimera Linux: A Minimalist Linux Distro Ditching systemd

2025-01-26

Chimera Linux is a new distribution aiming for a "simple, transparent, and easy to pick up" desktop experience. Built from scratch, its first beta release boasts a usable desktop with helpful software, primarily leveraging BSD tools. Rejecting systemd for its complexity, Chimera uses Dinit and musl, reducing dependencies. While installation is manual, its simplicity and support for GNOME/KDE appeal to experienced users. The focus is on a streamlined, usable system, not software debates.

(lwn.net)

Development Linux distro

Vim's Rebirth After the Passing of its Founder

2025-01-24

The death of Bram Moolenaar, Vim's creator, shook the community. However, the project continues under the stewardship of Christian Brabandt. The team tackled website modernization, security updates, and new feature development, including XDG directory support and Wayland support. While controversies, such as Tree-sitter integration, exist, the Vim community remains active and dedicated to the project's future.

(lwn.net)

Development

2025 Predictions: Linux Kernel, Open Source, and the Uncertain Future

2025-01-17

LWN.net's 2025 predictions paint a picture of exciting advancements and looming challenges in the Linux kernel and open-source landscape. The article foresees transformative changes with the extensible scheduling class (sched-ext), increased adoption of Rust in the kernel, the discovery of new backdoor attempts, risks associated with single-maintainer projects, the potential fallout from AI-generated code, growing support for free generative AI and maintainers, persistent cloud product failures and data breaches, a surge in open hardware, a resurgence of mobile device distributions, and the impact of geopolitical factors. The year ahead promises both significant opportunities and considerable hurdles for the open-source community.

(lwn.net)

Development

Vim's Rebirth After Bram Moolenaar's Passing

2025-01-11

The death of Bram Moolenaar, Vim's creator, shook the community, but the project lives on. At VimConf 2024, new maintainer Christian Brabandt outlined the project's reorganization and future plans. The team expanded, the website and infrastructure were upgraded, security vulnerability reporting and community communication were addressed. While Vim is currently in maintenance mode, development hasn't stopped; version 9.1 was released, with plans to improve the GUI, terminal support, and spell checking. Community collaboration is crucial; Brabandt emphasized listening to user needs and maintaining a healthy community.

(lwn.net)

Development Community Maintenance

Linux Kernel Initial Commit SHA Collision Risk

2024-12-31

Kees Cook, a Linux kernel developer, discovered a kernel documentation commit whose ID shares the first 12 characters with the initial commit in the kernel's repository. This potential collision could break various tools relying on unique commit IDs. While not yet merged upstream, this commit serves as a test case to proactively address SHA collisions and prevent future widespread issues.

(lwn.net)

Development SHA collision

Homa Network Protocol: A New Challenger to TCP/UDP

2024-12-30

Homa is a novel network transport protocol designed for data center applications, aiming to reduce the overhead of transmitting numerous small messages. Unlike traditional TCP/UDP, it eliminates connection setup, employing a unique request-response mechanism and prioritized queues to minimize latency. Currently, Homa is striving for inclusion in the Linux kernel, but its future may heavily rely on hardware acceleration within network devices.

(lwn.net)

Development network protocol data center

io_uring Gains New Process Creation Functionality

2024-12-20

LWN.net reports on the development of a new process creation feature for the io_uring subsystem. This functionality is implemented via two new io_uring operations: IORING_OP_CLONE, which creates a new process, and IORING_OP_EXEC, which performs an execveat() system call to load a new program. This promises increased efficiency and allows for more complex logic, such as path searching, to be executed asynchronously within the kernel. However, the feature is still in its early stages and has limitations, such as requiring synchronous execution of io_uring operations within the new process. Future development aims to increase flexibility and eventually merge the feature into the mainline Linux kernel.

(lwn.net)

Development process creation Linux kernel

Fish Shell 4.0 Released: Rewritten in Rust for Enhanced Performance

2024-12-19

Fish shell, a command-line shell known for its user-friendliness and smart features, has released version 4.0. The biggest change is a complete rewrite of the codebase from C++ to Rust, resulting in improved modern computing efficiency. Version 4.0 also boasts many new features, such as more natural keybindings and enhanced history search, designed to make the command line experience easier and more enjoyable. To ensure stability, the project has released a public beta inviting all users to participate in testing.

(lwn.net)

Development

Guile-powered Emacs: A Bold Rewrite Project

2024-12-16

Emacs, renowned for its extensibility, faces performance and expressiveness limitations with its core language, Emacs Lisp (Elisp). To address this, the Guile-Emacs project aims to replace Elisp in Emacs with Guile Lisp. After years of development and dormancy, Guile-Emacs has been revived by developers Robin Templeton and Larry Valkama. The project aims to leverage Guile's compiler and performance advantages to improve Emacs' speed and extensibility while maintaining Elisp compatibility. The ultimate goal is to rewrite a significant portion of Emacs's C code in Lisp, significantly enhancing its customizability. While facing technical and political challenges, the project presents exciting possibilities for the future of Emacs.

(lwn.net)

Development

Rust Compiler: A Query-Based Incremental Compilation Architecture

2024-12-13

To address the efficiency issues of traditional pipeline-based compilation, the Rust compiler employs a query-based incremental compilation architecture. This architecture breaks down the compilation process into a series of interdependent queries, utilizing a compilation database to cache intermediate results. This allows recompilation only of necessary code sections. Similar to a build system's dependency management, this significantly improves compilation speed, especially beneficial in scenarios like IDE integration. While introducing complexity, this approach offers a more stable and efficient incremental compilation experience for Rust compared to gradual improvements to traditional methods, now default for development builds.

(lwn.net)

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Development Compiler Incremental Compilation

Git Project Deadlocked Over Rust Integration

2024-12-13

The Git project is embroiled in a heated debate over the integration of the Rust programming language. Proponents argue that Rust's memory safety and ease of refactoring would enhance Git's security and developer experience. However, opponents express concerns that Rust integration could compromise support for niche platforms like NonStop, potentially hindering Git's long-term viability. NonStop's prevalence in the financial sector, its reliance on Git, and the lack of a Rust compiler for the platform complicate the issue. The discussion ultimately reached no resolution, leaving the Git project grappling with a critical decision between maintaining broad platform support and improving security and developer experience.

(lwn.net)

Development Platform Support