COSMIC Alpha Released

Original Article ↗ Hacker News Discussion ↗

System76’s new Rust-based COSMIC desktop environment has reached alpha, drawing interest for its fast performance, integrated tiling, and coherent design intended to replace GNOME on Pop!_OS and run on other distros like Fedora. Commenters see it as a bid to escape GNOME’s technical and governance constraints and to offer a more opinionated, minimalist alternative to KDE, but note that it is still rough, missing features, and built atop the experimental Iced GUI toolkit with accessibility and theming gaps. There is also debate over System76’s priorities (hardware quality vs. software investment), privacy concerns such as unexpected Google API calls, and whether another full desktop stack helps or fragments the Linux ecosystem.

Announcement clarity & onboarding

  • Several commenters found the release page unclear about what COSMIC is, suggesting clearer linking, screenshots, key features, and context.
  • Some Pop!_OS users were unsure how to try COSMIC without reinstalling; replies mention using the alpha ISO live-boot or installing the COSMIC packages and switching sessions.

Design goals vs GNOME/KDE

  • Many see COSMIC as a GNOME-like but independent DE: similar layout for familiarity, but with different goals (tiling, customizability, less “baggage”).
  • System76’s split from GNOME is attributed to constant extension breakage, diverging design goals, and maintenance burden; building their own stack is seen as a way to move faster.
  • Opinions diverge on KDE parity: some think matching KDE’s feature set will take years; others hope COSMIC stays smaller, more opinionated, and tiling-focused.

Technology stack (Rust, Iced, libcosmic)

  • Strong interest in COSMIC’s use of Rust, Iced, libcosmic, and the Smithay compositor stack.
  • Iced is praised for ergonomics, MVU architecture, low memory usage, and themeability, though it’s explicitly “experimental.”
  • Debate over using an immature UI toolkit for a DE: critics cite missing accessibility, text editing niceties, and system integration; supporters point to rapid progress and good fundamentals.
  • Comparisons are made with other Rust UI frameworks (GPUI, Vizia, Slint); Iced is generally seen as more mature.

Theming, tiling & extensibility

  • Tiling is a major selling point; several users say COSMIC’s tiling is already better than KDE’s, especially on ultrawide/multi-monitor setups.
  • Current theming is limited (colors, padding, border radius); some want richer, non-flat customization.
  • Plugin architecture is a key differentiator: plugins run as separate processes communicating via Wayland, intended to be more stable than GNOME’s in-process JS extensions. API stability is not promised yet (alpha).

Alpha quality & usability

  • Experiences vary: some daily-drive it on Fedora/Arch/Gentoo with only minor bugs; others hit severe breakage requiring reinstall and note many missing settings vs Pop!_OS’s GNOME.
  • Specific complaints: DPMS/power management not done, fractional scaling issues for Electron/X11 apps, lack of stable workspaces, large title bars, limited cursor/theming options, missing applets/pagers.
  • Positive notes: fast, lightweight, feels cohesive, sane Super-key-based shortcuts, good multi-monitor behavior and per-monitor workspaces.

Privacy & external services

  • A network request to googleapis.com on startup alarms some users; others speculate it may come from online accounts or captive-portal checks.
  • Broad agreement that such calls should be opt-in and ideally use self-hosted or non-Google services.

Distro support & release timing

  • COSMIC already runs on multiple distros (Pop!_OS alpha, Fedora via COPR, Arch, Gentoo, openSUSE Tumbleweed), generally with good performance.
  • Some frustration that Pop!_OS is still on 22.04; the COSMIC alpha is also effectively a Pop!_OS 24.04 alpha, with a full stable release expected later (timeline seen as optimistic by some).

Business strategy & hardware

  • Debate over whether System76 should prioritize hardware quality vs building a DE.
  • Some report disappointing laptop hardware experiences; others praise their desktops or newer models.
  • A subset explicitly say COSMIC makes them more likely to buy System76 hardware, seeing integrated hardware+software as a differentiator.