wlsunset

Wayland screen color temperature adjuster

TLDR

Start with location

$ wlsunset -l [51.5] -L [-0.1]

Manual temperature

$ wlsunset -t [4000] -T [6500]

Set gamma

$ wlsunset -g [0.9]

Specify output

$ wlsunset -o [DP-1]

SYNOPSIS

wlsunset [-l lat] [-L lon] [-t temp] [-T temp] [options]

wlsunset is a day/night screen color temperature daemon for Wayland compositors built on wlroots. It automatically adjusts display color temperature based on the time of day, shifting to warmer tones in the evening to reduce blue light exposure.Sunrise and sunset times are calculated from the provided geographic coordinates, creating a smooth transition between configurable day and night color temperatures. The gamma value can also be adjusted for additional display tuning. The tool runs as a background daemon and is the Wayland-native equivalent of redshift or f.lux.

PARAMETERS

-l LAT

Latitude.

-L LON

Longitude.

-t TEMP

Night temperature.

-T TEMP

Day temperature.

-g GAMMA

Gamma value.

-o OUTPUT

Specific output.

INSTALL

sudo apt install wlsunset

sudo dnf install wlsunset

sudo pacman -S wlsunset

sudo apk add wlsunset

sudo zypper install wlsunset

nix profile install nixpkgs#wlsunset

CAVEATS

Wayland only. wlroots required. Location needed for auto.

HISTORY

wlsunset was created as a Wayland-native alternative to redshift for adjusting screen color temperature.