Pureblue Core

A systemd-free, immutable Linux distribution built with OSTree.

What is this?

Pureblue Core is a from-scratch immutable Linux distribution. Unlike the main Pureblue project (which builds on Fedora), Core starts with Alpine Linux and uses OSTree for atomic updates—without systemd.

Key differences from Fedora-based Pureblue:

• No systemd (uses OpenRC instead)
• No Fedora base (uses Alpine Linux)
• OSTree-native from the ground up
• Minimal, focused, and completely under our control

Status

Experimental / Early Development

This is a learning project and proof of concept. The goal is to understand every layer of a modern Linux desktop by building it ourselves.

Architecture

┌─────────────────────────────────────┐
│         Desktop Environment         │ (Future: Custom DE)
├─────────────────────────────────────┤
│      GNOME 48 (with elogind)        │ (Phase 2)
├─────────────────────────────────────┤
│    Base System (Alpine + OpenRC)    │ (Phase 1 - Current)
├─────────────────────────────────────┤
│         OSTree + Bootloader         │
└─────────────────────────────────────┘

Roadmap

Phase 1: Core System ✅ In Progress

• Bootstrap Alpine root filesystem
• Create OSTree repository and commit
• Generate initramfs with OSTree support
• Configure bootloader (syslinux/GRUB/limine)
• Build bootable disk image
• Implement upgrade mechanism

Phase 2: GNOME Desktop

• Integrate elogind (logind replacement)
• Add GNOME 48 components
• Configure Wayland session
• Test and stabilize

Phase 3: Custom Desktop Environment

• Design DE architecture
• Build Wayland compositor
• Create core components (panel, settings, etc.)
• Iterate based on usage

Documentation

• PROPOSAL.md - Full technical architecture and design decisions

Building

Coming soon

License

GPL-2.1 - See LICENSE for details