nighterrors

Ultra-light Rust Wayland blue-light filter daemon.

nighterrors provides runtime temperature/gamma control with backend auto-selection:

• hyprland-ctm-control-v1 when available (preferred)
• wlr-gamma-control-unstable-v1 as fallback

Features

• Small single-binary daemon + CLI control interface
• Runtime control: set, get, reset, outputs, exclude, stop, status
• TTY-aware output (--raw, --pretty, auto mode)
• Output exclude/include controls (by output name or @<global_id>)
• Minimal dependency footprint (no clap/tokio/serde)

Quick Start

1) Build

cargo build --release

2) Run daemon (foreground)

./target/release/nighterrors run

Example startup with options:

./target/release/nighterrors run -t 5500 -g 95 -i off --exclude eDP-1

3) Control from another terminal

./target/release/nighterrors status
./target/release/nighterrors set temp 4800
./target/release/nighterrors set g -5
./target/release/nighterrors exclude add eDP-1
./target/release/nighterrors get state --raw

4) Stop daemon

./target/release/nighterrors stop

Command Help

nighterrors help
nighterrors help run
nighterrors help set

Notes

• Linux + Wayland only.
• If no compatible protocol is exposed by your compositor, startup fails with a clear backend/protocol error.
• Default socket path: ${XDG_RUNTIME_DIR:-/run/user/<uid>}/nighterrors/${WAYLAND_DISPLAY:-wayland-0}.sock