sunsetr is an automatic blue-light filter for Wayland desktops. It adjusts display colour temperature throughout the day, moving from neutral daylight tones to warmer colours in the evening.
The program works with compositors including Hyprland, Niri, Sway, River and Wayfire, provided a compatible colour-adjustment backend is available. It offers several backends to accommodate differences between compositors, including direct colour transformation support in Hyprland.
Unlike simpler utilities that primarily follow sunrise and sunset, sunsetr provides extensive control over display profiles, transition behaviour and automation. Users can configure different colour settings for particular activities, select their geographical location and integrate the program with desktop scripts or other applications.
This is free and open source software.
Key Features
- Automatic colour temperature adjustments based on geographical location or manually configured times.
- Supports multiple Wayland compositors, including Hyprland, Niri, Sway, River and Wayfire.
- Several colour adjustment backends, including native Hyprland CTM, hyprsunset integration and direct Wayland protocol communication.
- Configurable daytime and nighttime colour temperatures and gamma settings.
- Smooth, adjustable transitions with adaptive fading to avoid sudden changes in display appearance.
- Supports fixed colour temperature and gamma settings without automatic scheduling.
- Preset management for switching between profiles tailored to different activities or preferences.
- Automatic sunrise and sunset calculations using geographical coordinates.
- Interactive location selection from a database containing thousands of cities worldwide.
- Timezone-based location detection to provide initial geographical settings.
- Hot reloading applies configuration changes without manually restarting the program.
- Unix socket-based IPC allows external scripts and applications to monitor and control the program.
- Command-line controls for testing colour settings, managing presets, checking status and modifying configuration.
Website: github.com/psi4j/sunsetr
Support:
Developer: psi4j
License: MIT License
sunsetr is written in Rust. Learn Rust with our recommended free books and free tutorials.
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