sunsetr v0.8.0

This release brings systemd-compliant sleep/resume detection via D-Bus, eliminating the need for root scripts, plus Nix flake support and display hotplug detection from community contributors.

New Features

D-Bus Sleep/Resume Detection

• Replaced system-sleep scripts with systemd-recommended D-Bus approach
• Monitors systemd-logind PrepareForSleep signals for automatic resume detection
• Runs entirely in user space - no root privileges needed
• Uses zbus blocking API in dedicated thread

Nix Flake Support

• Official flake.nix for reproducible builds
• Development shell with all required tools
• Automatic version detection from Cargo.toml
• Full integration with Nix ecosystem

Display Hotplug Detection

• Automatically detects monitor connection/disconnection events
• Reapplies color temperature when displays change
• Works across all supported Wayland compositors
• Hyprland native support coming soon

Breaking Changes

• System-sleep scripts are no longer installed or needed
• Sleep/resume detection now requires D-Bus (standard on systemd systems)

For Package Maintainers

• The system-sleep/ directory has been removed from the source
• No need to install sleep hooks - D-Bus handles everything
• Existing sleep hooks will be automatically cleaned up during upgrade

For Nix users:

# Run directly from GitHub
nix run github:psi4j/sunsetr

# Install using nix profile
nix profile install github:psi4j/sunsetr

# For development (from cloned repo)
nix develop

Acknowledgments

Special thanks to:

• @scottmckendry for contributing Nix flake support and display hotplug detection
• @jficz for feedback on improving our sleep/resume implementation
• All contributors and users who provided feedback and testing

Full Changelog

For a complete list of changes, see the full changelog.